Documentatie atasata la

Hidroizolatii si impermeabilizare pentru structuri din beton PENETRON

Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS

Limba: Engleza

46 afisari

Tip documentatie: Catalog, brosura

Pagina 1 - Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura...

Integral Capillary System Concrete Waterproofing A bridge is an engineered structure built to span a gorge, valley, road, railroad track, river, other bodies of water or any other physical obstacle. Beam Bridges The beam is the simplest of bridge forms. It is made of long timber, metal, or concrete beams anchored at each end. Arranging the beams in a lattice, such as a triangle, enables the weight to be equally distributed thus resulting in a truss bridge. Arch Bridges An arch bridge has a bowed shape causing the vertical force of the weight it carries to produce a horizontal outward force at each end. It may be constructed of steel, concrete, or masonry. -1- ICS/Penetron International LTD. Bridge Structures Integral Capillary System Concrete Waterproofing The cable-stayed bridge is the newest type of bridge. In a cable-stayed bridge, the roadway is supported by cables attached directly to the supporting tower or towers. This differs from a suspension bridge where the roadway

Pagina 1-Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura Engleza Integral ...

Pagina 2 - Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura...

is suspended from vertical cables that are, in turn, attached to two or more main cables. These main cables hang from two towers and have their ends anchored in bedrock or concrete. Suspension Bridges A suspension bridge functions by hanging (suspending) the deck of the bridge from flexible chains or ropes. The simplest form is made from wood and rope and can be seen as a simple footbridge hanging over a crossing. -2- ICS/Penetron International LTD. Cable-stayed Bridges Integral Capillary System Concrete Waterproofing ICS/Penetron International LTD. Why Bridge Structures Deteriorate Bridge Damage Moisture, water and chemicals damage to concrete Even concrete of high quality is a porous material -- Excess water evaporation during hardening will leave millions of pores and capillaries in concrete -- The zones between cement and aggregates are prone to cracking during hardening due to drying, shrinkage, temperature stress and outside forces Porosity of concrete -- Allows mo

Pagina 2-Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura Engleza is...

Pagina 3 - Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura...

isture, water and chemicals to move freely throughout the concrete -- Increases absorption of deleterious chemicals -3- Integral Capillary System Concrete Waterproofing -- Cracks can allow water to migrate into the structure and possibly damage utilities, interior finishes and even the structure, if not waterproofed Moisture, water and chemicals intrusion -- Result in corrosion of the concrete due to chemicals dissolved in water -- Result in concrete neutralization (carbonization) -- Result in alkali-aggregate reaction -- Freeze/thaw cycles can lead to concrete cracking and damage -- Reduce structural property -4- ICS/Penetron International LTD. As bridge structures are constantly moving and developing strains due to earth loads, stress redistribution and tectonic seismic influences, cracks may develop Integral Capillary System Concrete Waterproofing ICS/Penetron International LTD. Moisture, water and chemicals damage to reinforcing steel Millions of pores and c

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Pagina 4 - Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura...

apillaries are left in untreated hardened concrete Chlorides penetrate into concrete with the help of surface moisture and water When chlorides penetrate to reinforcing steel, corrosion begins Further penetration of chlorides results in further corrosion, deterioration and spalling Over time, any untreated concrete structure will slowly succumb to damage due to the presence of water and chemicals. -5- Integral Capillary System Concrete Waterproofing Penetron products are cementitious capillary crystalline waterproofing materials -- Powders consisting of Portland cement, quartz sand and multiple activating chemicals -- A range of activating chemicals in powder form that can be applied to concrete as an admixture, slurry and dry-shake Penetron products effectively stops water and moisture penetration into concrete and provides the best protection by improving the capillary structure and reducing porosity -- Penetron Applied by brush or spray on hardened concrete surface --

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Pagina 5 - Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura...

Penetron Plus Dry shake application on horizontal fresh concrete surface -- Penetron Admix An additive mixed into new concrete at the time of batching for complete integral waterproofing Application Water towers & storage tanks Reservoirs & dam s Swimming pools Subway & other tunnel systems Bridge decks Parking decks Off-shore & marine structure Basements Foundations Sewage and water treatment plants Traffic-bearing structure Elevator shafts Company passed ISO 9001 quality system authentication -6- ICS/Penetron International LTD. What Are Penetron Products? Integral Capillary System Concrete Waterproofing ICS/Penetron International LTD. How Penetron Products Waterproof & Protect Concrete Penetron or Penetron Plus Typical concrete structure with moisture When mixed with water and applied as a coating, the active chemicals in Penetron cause a reaction leading to the formation of nonsoluble crystals within the pores and capillary canals of concrete The concret

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Pagina 6 - Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura...

e becomes permanently sealed and neither water nor any other liquids are able to penetrate the concrete from any direction Concrete has been previously saturated with water so that there is an adequate amount of liquid water present to allow movement of chemicals into the concrete pores. The chemicals are pushed into the concrete through the action of diffusion. Under the right conditions, the chemicals can also move into the concrete by seeping water, or by the natural wicking action of the concrete. Once into the concrete, the chemicals react with unhydrated cement particles, and by-products of cement hydration to form needle-like crystals, which fill and block the pores and capillaries in the concrete. As water can no longer pass through the concrete, the concrete is said to be “waterproof”. In absence of moisture, the activating chemicals remain dormant in concrete for years. If minute cracks recur at any time, any penetrating moisture will activate the dormant materials and t

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Pagina 7 - Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura...

he chemical reaction and sealing process will repeat itself automatically. -7- Integral Capillary System Concrete Waterproofing Penetron Admix is a unique crystal-forming additive that provides permanent protection for buildings and other structures by waterproofing concrete from the inside out. Penetron Admix is added to the concrete mix at the time of batching. The activating chemicals of the product react with water, unhydrated cement particles and by-products of cement hydration in concrete to form needle-like crystals. These crystals grow and migrate through the concrete to fill in hairline cracks and microscopic voids that would otherwise serve as passages for harmful moisture. Penetron Admix enhances the natural hydration process in concrete by intensifying hydration crystal growth, increasing compressive strength and reducing cracking caused by shrinkage. In absence of moisture, the activating chemicals remain dormant in concrete for years. Should cracks recur at any time,

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Pagina 8 - Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura...

these dormant materials are activated by any penetrating moisture, and the chemical action and sealing process repeats itself automatically. -8- ICS/Penetron International LTD. Penetron Admix Integral Capillary System Concrete Waterproofing ICS/Penetron International LTD. Features, Advantages & Benefits Features and Advantages -- Penetron Admix Permanent waterproofing admixture ·Impermeability lasts as long as the concrete ·System becomes an integral part of the concrete ·Does not require re-application Resists high hydrostatic pressure from either positive or negative surfaces ·Ideal for below grade application ·Does not need any other form of waterproofing ·Protects against waterborne ground contaminants Protects reinforcing steel from corrosion ·Highly resistant to waterborne aggressive chemicals ·Stops ingress of water required for AAR ·Allows concrete to breathe, eliminating vapor buildup and leaving the concrete completely dry Will grow crystals years after init

Pagina 8-Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura Engleza these...

Pagina 9 - Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura...

ial construction ·Will re-activate in the presence of moisture ·Self-heals hairline cracks of up to 0.4mm and stops water ingress that may occur from subsequent damage to the structure ·Continually improves with time Multifunctional admixture ·Does not contain stearates, sodiums or silicates ·Not a hydrophobic type product ·Not a surface densification product ·Assists concrete in the hydration process, acting as a catalyst to un-hydrated cement particles already existing in the concrete ·Water-reducing, increasing workability of fresh concrete ·Increases compressive strength of hardened concrete ·Non-toxic ·Approved for portable water use -9- Integral Capillary System Concrete Waterproofing Penetron or Penetron Plus In-depth waterproofing property ·Penetrates deeply, and impermeability lasts as long as the concrete ·System becomes an integral part of the concrete, forming a complete body of strength and durability ·Waterproofing and chemical resistance property remain

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intact even if the surface is damaged Completely effective against high hydrostatic pressure ·Idea for below grade application, reservoirs and pipelines ·Does not require protection during backfilling, placement of steel or wire mesh and other common procedures ·Protects against waterborne ground contaminants Protects reinforcing steel from corrosion ·Resists chemical attack (PH3-11 constant contact; PH2-12 periodic contact) and provides a wide range of protection from freeze/thaw cycles, aggressive waters, sea water, carbonates, chlorides, sulfates and nitrates ·Stops ingress of water required for AAR ·Allows concrete to breathe, eliminating vapor buildup and leaving the concrete completely dry Will grow crystals years after initial application ·Will re-activate in the presence of moisture ·Self-heals hairline cracks of up to 0.4mm and stop water ingress that may occur from subsequent damage to the structure ·Continually improves with time Efficient application method ·Can

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Pagina 11 - Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura...

be applied from either the positive or negative side ·Can be applied to moist or green concrete ·Can be used for new or existing concrete ·Compatible with waterbased glues and surface coatings High-growth technology ·Zero VOC ·Does not contain stearates, sodiums or silicates ·Not a hydrophobic type product ·Not a surface densification product ·Non-toxic ·Approved for portable water use - 10 - ICS/Penetron International LTD. -- Integral Capillary System Concrete Waterproofing ICS/Penetron International LTD. Benefits of Penetron Technology -- Penetron Admix Benefits to Property Owners ·Cost effective ·Lowers overall project costs .Permanent waterproofing system ·Requires no maintenance ·Increases the quality of the concrete for structural performance and integrity ·Increases usage of infrastructure ·Eliminates down-time and costs associated with maintenance and repairs ·Reduces project time requirements ·Long-term manufacturer’s warranty ·Manufacturer’s hist

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ory of international success in various climatic & environmental conditions Benefits to Contractors ·Unmatched technical support ·Reduces application errors associated with installation of other systems ·Improves pouring and placement of concrete ·Eliminates construction delays due to elimination of traditional waiting period to install membranes on cured concrete -- Penetron or Penetron Plus Benefits to Property Owners ·Cost effective ·Lowers overall project costs ·Permanent waterproofing system ·Requires no maintenance ·Long-term manufacturer’s warranty ·Manufacturer’s history of international success in various climatic & environmental conditions Benefits to Contractors ·Unmatched technical support ·Reduces application errors associated with installation of other systems ·Reduces risk of membrane failure ·Requires no protective cement mortar in comparison with other systems - 11 - Integral Capillary System Concrete Waterproofing Penetron Penetron Plus Penetr

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Pagina 13 - Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura...

on Admix Membranes (Positive Side) Cementitious material applied on concrete surface to transfer needle-like crystals to infiltrate the concrete mass ·Improves with time ·Resistance to exceeding 150m head pressure ·Withstands 3Mpa in permeability test Cementitious material added into fresh concrete to form needle-like crystals within the concrete mass ·Improves with time ·Continuous self-healing ability ·Initiates full hydration Protection of reinforcing steel · Prevents corrosion of reinforcing steel by stopping passage of water and chlorides ·Permanent protection ·Prevents any permeation of water and chlorides ·No negative side protection ·Easily leaks at the joints and seams Crack self-healing ability ·Will re-activate in the presence of moisture to seal new cracks even years later ·Rigid material, can not bear excessive transformation, but self heals minor cracks of up to 0.4mm ·Will re-activate in the presence of moisture to seal new cracks even years later

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·Reduces cracking in plastic and curing stage ·Self heals minor cracks of up to 0.4mm in the presence of moisture · Improves durability by removing water within concrete ·Eliminates water penetration at cracks ·Easily repaired from positive or negative side · Wide range of options are available ·Repairs are cost effective · self-healing ability No Description Resistance to hydrostatic water pressure Crack resistance Freeze/thaw durability Repair requirement · Improves durability by removing water within concrete ·Eliminates water penetration at cracks ·Permanent waterproofing protection, does not need repair Other Surface Applied Products Liquid and sheet applied bitumens and polymers affixed to the concrete surface Materials applied to concrete surface containing mainly water repellents and sealants ·Protection breached by any pinhole or seam ·Once leaking, will require replacement ·Reduces initial absorption but will deteriorate with time ·Limited penetrat

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Pagina 15 - Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura...

ion leads to poor resistance to hydrostatic pressure ·No negative side protection ·Limited protection as it slows the water ingress in uncracked areas · self-healing ability No ·Can bear excessive transformation ·Limited time protection at existing cracks locations ·No crack resistance ·Temporarily fills existing cracks ·Slow deteriorating factors initially ·Slow deteriorating factors initially ·No durability at crack locations ·Difficult to repair ·Difficult to locate pinholes and poor joints ·May require total removal & repair ·Expensive and sometimes impossible due to accessibility ·Repairs may require removal of previous materials - 12 - ICS/Penetron International LTD. Comparison of Penetron Products to Other Waterproofing System Integral Capillary System Concrete Waterproofing Application Surface preparation Construction schedule Effective land usage Sub-surface drainage system ·Applied by brush/ spray to positive or negative side of old/new concre

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te ·Or, dry shake application on horizontal fresh concrete surface ·Needs coarse, water saturated, clean surface for brush or spray ·No surface prep for dry shake ·Can be applied during concrete finishing or anytime following · Can be applied to the negative side of concrete allowing construction tight to property lines ·Not required Additional coatings ·Can be finished with coatings, tiles, etc. Maintenance ·Not only as a surface coating ·Maintenance not required ·Permanent and improves with time Service life Penetron Admix ·Mixed at batch plant or on-site ·No additional applications required ·No surface preparation ·Added into fresh concrete at the time of batching ·Saves 10-50% time and construction costs ·Can build tight with property lines ·Not required ·Does not affect coatings ·Adhesion excellent for coatings or tiles ·Maintenance not required for the life of the concrete ·Life time of concrete Membranes (Positive Side) Other Surface Applied Pro

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ducts ·Liquids: brush application ·Sheets: glued or welded to the concrete surface ·Correct joints and seams critical to performance ·Clean surface ·Dry surface ·Smooth surface ·Only applied to positive side ·Substrate profile critical to performance ·Must be applied at completion of structural work ·Require protective cement mortar ·Some require 28 days cured concrete · Similar scheduling as membranes ·Spaces required between property line and concrete for membrane installation ·Require drainage under high hydrostatic pressures ·Require protective mortar prior to surface finishes ·Spaces required between property line and concrete for surface application ·Costly replacement generally required ·Re-application required under hydrostatic conditions ·Best when first applied ·Deteriorate with time ·Vulnerable to surface damage ·Become brittle with age resulting in cracks and openings ·Surface damage will eliminate protection ·Needs surface prep depending o

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n products requirements ·Require drainage under high hydrostatic pressures ·May require special preparation prior to surface finishes - 13 - ICS/Penetron International LTD. Penetron Penetron Plus Integral Capillary System Concrete Waterproofing Penetron Bridge Treatment Concrete self-waterproofing treatment or Concrete surface waterproofing treatment -- Concrete self-waterproofing treatment Penetron Admix is added into concrete at the time of batching for complete integral waterproofing. -- Concrete surface waterproofing treatment Penetron is applied on the surface of concrete by brush or spray. - 14 - ICS/Penetron International LTD. Penetron Bridge Treatment Integral Capillary System Concrete Waterproofing ICS/Penetron International LTD. Application of Penetron Products Application of Penetron -- Surface Preparation The concrete surface to receive the Penetron system must be structurally sound and free of dirt, soil, oil, release agents, laitance or any other fo

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Pagina 19 - Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura...

reign materials which may impair the bond, penetration and/or overall performance of Penetron materials. Extremely smooth concrete surface must be waterblasted or sandblasted to make sure the concrete surface has an open capillary system. Rout out visible cracks exceeding 0.4mm in size to a depth of 20mm to 25mm. Also rout out honeycombed pockets and faulty construction joints to sound concrete. Construction joints are routed or provided with a formed 20mm*20mm reglet. Wet down dry surfaces prior to the application of Penetron materials. Moisture must be present in the concrete strata to ensure maximum chemical penetration. Surfaces must be damp when Penetron products are applied. -- Mixing Brush application: 0.8-1.5kg/m2, 5 parts Penetron to 2 parts water Spray application: 0.8-1.5kg/m2, 5 parts Penetron to 2.75-to-3.25 parts water (varies with climate and spray equipment) Penetron should be mixed to the consistency of thick latex paint. Stir the slurry mixture frequently during the

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Pagina 20 - Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura...

application and prepare only as much as can be applied within a 30-minute period. -- Application Apply Penetron coating by masonry-type brush (artificial fibers, if available). For spray application, drop hopper or piston pump type equipment is recommended. Prior to application of Penetron coatings, fill form tie holes, rout out cracks, honey bombs, reglets and seal strips at construction joints with Penecrete Mortar in a laminating layer of 2.5cm to 3cm. Prime concrete surface of these areas with one slurry coat of Penetron prior to applying Penecrete Mortar. Penetron slurry must be applied to damp concrete surface. Second coat should be applied when first coat is dry to the touch. A light misting of water may be required between coats in hot/dry climates. - 15 - Integral Capillary System Concrete Waterproofing Dry sprinkle Penetron or Penetron Plus on “still plastic” concrete by broadcasting or use of a fine mesh sieve, in quantities that are specified. Work Penetron powde

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Pagina 21 - Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura...

red slab surface with wood flat or power trowel until required finish has been achieved. -- Coverage Horizontal concrete surface: Penetron at 1.4 to 1.6kg/m2. Apply in one slurry coat or powder application, when concrete reaches initial set. Trowel or float to specified finish. Penetron Plus powder application at 0.5kg/m2 when concrete reaches initial set. Trowel or float to specified finish. Vertical concrete surfaces: Penetron at 1.4 to 1.6kg/m2. Apply in two coats (0.8kg.per coat). -- Curing Except for extremely hot weather and very Iow humidity, curing of the Penetron system is not required. In these extreme conditions curing, using a light water misting, must begin as soon as the Penetron coating has hardened sufficiently. Under most conditions it is sufficient to mist the areas treated with Penetron three times a day for the first day. In extremely hot climates spraying may be required more frequently and for several days. Penetron Plus (trowel applied): Follow concrete specif

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ications for curing procedures. -- Temperature requirement Penetron system can be applied in coating or in mortar form when the temperature is above 32 degrees Fahrenheit or 0 degrees Centigrade. Penetron Plus (trowel applied) can be applied in temperatures where concrete can be placed. Follow concrete specifications for protection requirements according to standard concrete procedures. - 16 - ICS/Penetron International LTD. Horizontal concrete surfaces: Apply Penetron slurry in one coat with stiff bristle brush/broom or squeegee. Integral Capillary System Concrete Waterproofing -- Dosage rate Penetron Admix: 1%-2% by weight of the cementitious materials, including fly ash, silica fume, etc. Note: Under certain conditions the dosage rate may be as low as 0.8%, depending on the quantity and type of total cementitious materials. -- Application Ready Mix Plant-Dry Batch Operation: Add Penetron Admix in powder form to the drum of the ready-mix truck. Drive the truck under the ba

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Pagina 23 - Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura...

tch plant and add 60%-70% of the required water along with 136-227kg of aggregate. Mix the materials for 2-3 minutes to ensure the Admix is distributed evenly throughout the mix water. Add the balance of materials to the ready-mix truck in accordance with standard batch practices. Ready Mix Plant- Central Mix Operation: Mix Penetron Admix with water to form a very thin slurry (e.g., 18kg of powder mixed with 22.7 liters of water). Pour the required amount of material into the drum of the ready-mix truck. The aggregate, cement and water should be batched and mixed in the plant in accordance with standard practices (taking into account the quantity of water that has already been placed in the ready-mix truck). Pour the concrete into the truck and mix for at least 5 minutes to ensure even distribution of Penetron Admix throughout the concrete. Precast Batch Plant: Add Penetron Admix to the rock and sand, and then mix thoroughly for 2-3 minutes before adding cement and water. The total con

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Pagina 24 - Structuri poduri PENETRON PENETRON, PENETRON ADMIX, PENETRON PLUS Catalog, brosura...

crete mass should be blended using standard practices. -- Note Penetron Admix is compatible with other water-reducing admixtures and superplasticizers. Retardation of set may occur when using Penetron Admix. Trial mixes should be carried out under project conditions to determine setting time. Once the concrete mix design is determined, without testing any adjustment of the dosage rate is prohibited. - 17 - ICS/Penetron International LTD. Application of Penetron Admix Integral Capillary System Concrete Waterproofing ICS/Penetron International LTD. QA/QC of Penetron Products QA/QC of Penetron Project: Application Section: Client: Contractor: Date of Inspection: Before-Application Inspection: Surface Repair: [ ] Spalling repair [ ] Void repair [ ] Construction debris removed [ ] Sandblast [ ] Acid Etch [ ] Waterblast [ ] Scabbling Smooth Surface Treatment: Crack repair [ ] [ ] [ ] / ] Final Wash-down (High pressure water) Comments on surface prepa

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ration: During-Application Inspection: Mixing Product: Mix water quality Mix rater [ Application rate Number of coats Application by brush Or spray [ 1[ kg/m2] ] or 2 [ ] [ ] [ ] - 18 - Integral Capillary System Concrete Waterproofing ICS/Penetron International LTD. After-Application Inspection: Observe and comment on consistency of application: Thickness: Coverage: Joints: Overlap: Penetration: Curing Program: Water fogging [ ] times per day, for [ ] days Volume of product used in this section: [ kgs] Surface area treated [ m2 ] Comments: Inspected by: Date: - 19 - Integral Capillary System Concrete Waterproofing ICS/Penetron International LTD. QA/QC of Penetron Admix Pre Casting Project: Type of Structure: Section Identification: Date of Inspection: Date of Proposed Casting: Curing Proposed? Yes/No Curing Period Curing Type: Water Burlap (Wetted) Sand/Water Chemical (Note Brand or Type) Days Plastic Site Condition Report: Construction Debris Remo

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ved Yes/No Formwork Clean and Sound Yes/No Rebar Clean, Secure (well tied) Yes/No Construction Joints Prepared Yes/No General Site Conditions: Casting Surface- Construction Joint/ Lean Concrete/ Plastic Sheeting/Packed Earth/ Formwork/ Other Evidence of Ground Water Flow or Seepage? Surface Water Runoff or Drainage Points Created? Waterbar Installed Yes/No Type Condition of Waterbar Installation: Nature and location of all defects to be described in detail Inspected by: Witnessed by: - 20 - Integral Capillary System Concrete Waterproofing Specification Specified Characteristic Strength: 28 days Target Mean Strength: Free-water/Cement Ratio: Type of concrete: Concrete Slump: Cementitious Materials Cement Type: Content: Silica Fume Content: Fly Ash Content: Other Type: Content: Aggregates Type Coarse: Fine : Relative Density of Aggregates: Nominal Coarse Aggregate Size: Grading of Fine Aggregate: Coarse Aggregate Content: Fine Aggregate Content: Water Free

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Water Content: Admixtures Type: Penetron Admix Dosage: Other per 100kg cementitious materials Type: Dosage: Type: Dosage: Inspected by: Witnessed by: Date: - 21 - ICS/Penetron International LTD. Concrete Mix Design Integral Capillary System Concrete Waterproofing ICS/Penetron International LTD. Post Casting Volume of Concrete: Cast Section Identification: Date of Inspection: Date of Casting: Date of Formwork Removed: Curing Applied? Yes/No Curing Period Days Curing Type: Water Burlap (Wetted) Plastic Sand/Water Chemical Formwork Condition Report: Evidence of Honeycombing? Yes/No/Photo Evidence of Cracking? Yes/No/Photo Evidence of water leakage? Yes/No/Photo Exposed rebar Tie Bolt Holes Yes/No/Photo Yes/No/Photo Finish Surface Condition: Waterbar Installed Yes/No Condition of Waterbar Installation: Is it continuous? Re-welding required? Cleaning required? All defects to be described in detail, including location, extent, apparent depth, etc. Inspe

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cted by: Witnessed by: - 22 - Integral Capillary System Concrete Waterproofing The President Bush Turnpike, Texas, USA Over 1 million lbs of Penetron Admix were used in the concrete median barriers to protect against free-thaw deterioration and chloride ion attack. ChiJiaZhuang Bridge, ShanDong Province, China Penetron was applied on the surface of a cast-in-situ reinforced concrete layer with a thickness of 8 centimeters by brush. HeHai Bridge, TianJin City, China HeHai Bridge is situated at the entrance of Hai River in TianJin. It is 2650 meters in total length, the main span is 310 meters and the single tower is 168 meters in height. Penetron was applied on the surface of a cast-in-situ reinforced concrete layer with a thickness of 8 centimeters by brush. - 23 - ICS/Penetron International LTD. Project Case History Integral Capillary System Concrete Waterproofing Sweden - National Road Administration Report - 24 - Integral Capillary System Concrete Waterproofing - 25

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- Integral Capillary System Concrete Waterproofing - 26 - Integral Capillary System Concrete Waterproofing - 27 - Integral Capillary System Concrete Waterproofing - 28 - Integral Capillary System Concrete Waterproofing ICS/Penetron International LTD. Test Data Penetron -- Laboratory Testing of PENETRON Waterproofing System Riga Technical University Determination of Waterproofing RTU Testing Review Nr.64-98 Determination of Waterproofing Scanning Electron Microscope (SEM) Tests X-Ray Diffraction Analysis Test Report/Shenzhen, China -- Compressive Strength -- Shimel and Sor 12/21/94 Shimel and Sor 11/22/93 AITA 4/3/85 -- Shimel and Sor 12/21/94 AITA 8/7/85 AITA 12/10/90 Microscopic Examinations -- Shimel and Sor 12/21/94 -- Water Permeability Tests Analysis of Concrete for Penetron Content Shimel and Sor 12/21/94 Chemical Resistance -- Chloride Content Shimel and Sor 10/19/93 Chemical Resistance/Corrosion Chart -- Shimel and Sor 12/21/94 Shear and Bond Test

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s Toxicity -- Shimel and Sor 12/21/94 AITA 3/7/85 AITA 3/8/85 Riga 4/97 Acute Oral Toxicity Migration of toxic Element Cytotoxicity Test Penetron Admix SETSCO Singapore-crack bridging report on Terminal 3, Changi Airport Impermeability, University of Aleppo Penetron Admix effect on concrete- Helsinki ACCI-University of NSW, Australia- full examination of Penetron Admix effect on concrete SETSCO Singapore-microscopic examination of crack bridging effect of Penetron Admix on PBFC concrete SETSCO Singapore-performance assessment of Penetron Admix Microscopic examination of concrete at 14 days Microscopic examination of concrete at 28 days - 29 - Integral Capillary System Concrete Waterproofing SETSCO SERVICES PTE LTD 18 Teban Gardens Crescent Singapore 608925 Tel: (65) 6566 7777 Fax: (65) 6566 7718 Website: www.setsco.com Our Ref: A6127/CHF TEST REPORT Date: 25/10/02 Page 1 of 4 (This Report is issued subject to the terms & conditions set out below) MICROSCOPIC ANALYSIS ON T

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HE CONCRETE CORES FROM RETAINING WALL AT CHANGI AIRPORT TERMINAL 3 Prepared for: REVERTON ENGINEERING(S) PTE LTD 605A Macpherson Road #06-02 Citimac Industrial Complex Singapore 368240 Attn: Mr. Gary Loh Report prepared by: Chen Hong Fang Senior Engineer Construction Technology Division Report received and approved by: Wong Chung Wan Divisional Director Construction Technology Department - 30 - Integral Capillary System Concrete Waterproofing A6127/CHF Page 2 of 4 1. INTRODUCTION Cracking and seepage of water on the retaining wall at Changi Airport Terminal 3 was reported by Reverton Engineering(s) Pte Ltd (herein refers to as the client). SETSCO has been engaged by the client to carry out laboratory analysis to determine the crack width and crystal growth in the crack on the concrete cores extracted from the said structure. The proposed basement was constructed with three sides of wall, labeled as wall 1-3 in this report (refer to figure 1 in Appendix A). Thickness of the wal

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l was about 600mm. PENETRON waterproofing admixture was said to be used in the concrete. Water leakage was found along the crack line and tie pin after backfill. However, the water leakage has been stopped on wall 1, which was cast somewhere in 2001. Sign of efflorescence was found on all three sides of the walls. Most of the efflorescence emanated from the tie pins, but cracks with some sign of efflorescence were also noted at some areas (Refer to the photographs in Appendix). A total of three core samples were extracted from wall 1 on 05/10/2002. Samples S1 and S3 were extracted from crack area while sample S2 was taken at the tie pin. During extraction, the cores were drilled to a depth of 400mm but due to the presence of reinforcement, the length of the core S3 removed was only 240mm. The concrete mix design furnished by the client is given in Appendix A. 2. MICROSCOPIC ANALYSIS The microscopic analysis was performed on a ground section using a stereo microscope and metallurgical

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microscope and on a thin section with a polarizing and fluorescent microscope (PFM) under transmitted and reflected light. For preparation of the ground section, a small block of the sample was cut and ground to attain a smooth finish. For preparation of a thin section, a small concrete block was sawn from the core sample, glued to an object glass and impregnated with an epoxy resin containing a fluorescent dye. After hardening of the epoxy, a thin section with a surface area of approximately 33*63mm and a thickness of 20-30mm was prepared for PFM analysis. - 31 - Integral Capillary System Concrete Waterproofing A6127/CHF Page 3 of 4 Under transmitted light, the various components ( type of cement and aggregates), air voids content, compaction pores and damage phenomena in the samples were identified. Under reflected light, the fluorescent microscopy made it possible to study the homogeneity of the mix and cement paste, capillary porosity, microcracks and other defects in the sam

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ples. Scanning Electron Microscope (SEM) and Energy Dispersive X-ray (EDX) Analysis technique was also applied for semi-quantitatively analysis of the element composition of the crystals present in the crack and topography of the crystals. In summary, SEM utilizes a beam of electrons in a vacuum environment to form an image of the surface topography of a sample. Such magnified images are characterized by a high level of resolution and good depth of view. The characteristic X-ray emitted from the sample surface upon being irradiated with the electrons are then analyzed using an EDX accessory/detector that is coupled to the SEM, allowing evaluation of the % elemental content at the irradiated areas/spots on the sample. 3. RESULTS i) Visual examination The length of the cores varied from 240mm to 310mm. Crack perpendicular to the surface was noted in samples S1 and S3. The width of the crack ranged from 0.04mm to 0.3mm. The paste matrix appeared light gray in color while the paste matrix

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was noted to be generally light gray. Thin sections were prepared at the top of sample S2 and the end of sample S3 for further microscopic analysis. Stereo microscope and SEM-EDX analysis were performed on sample S3 to determined the presence of the crystals in the crack and their elemental composition. ii) Microscopic analysis Under stereo microscope, a lot of coarse-grained elongated crystals were seen lining the crack. Thin section of sample S3 showed that coarse-grained elongated crystals and fine-grained needle-like crystals in the crack. All these crystals showed low birefringence under crossed polarized microscope. - 32 - Integral Capillary System Concrete Waterproofing A6127/CHF Page 4 of 4 Further scanning electron microscope and energy dispersive X-ray analysis were performed on the crystals present in the crack. The coarse-grained elongated crystal (BEI image in Appendix) contained mainly Calcium (Ca), Oxygen (O) and Silicon (Si). The fine-grained needle-like crystal

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was predominantly made up of Calcium (Ca), Silicon (Si), Oxygen (O), Sulfur (S), Aluminum (Al), which was probably ettringite (C6AS3H32). Well-formed CaCO3 crystals were present as laminated texture on the surface of sample S2. - 33 - Integral Capillary System Concrete Waterproofing APPENDIX A Wall 2 Wall 3 Wall 1 Figure 1: The layout of the retaining wall Casting date of extracted cores Sample reference Date of cast S1 19/12/2001 S2 19/12/2001 S3 06/08/2001 - 34 - Integral Capillary System Concrete Waterproofing CONCRETE MIX DESIGN Project Contractor Date Ref : Pile Foundation & Basement Construction For Terminal 3 Singapore Changi Airport : Sato Kogyo., Ltd : 8th March 2001 : RE/SK/PU/40P/01 Concrete Grade 40 Pump 1 Specification 1.1 Specific Characteristic Strength 1.2 Designed Standard Deviation 1.3 Design Margin 1.4 Target Mean Strength 1.5 Free Water/Cement Ratio 1.6 Type of Concrete 1.7 Concrete slump 2 Cement 2.1 Cement Type 2.2 Cement Content 3 Aggregate

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s 3.1 Aggregate Type Coarse Fine 3.2 Relative Density of Aggregates 3.3 Normal Aggregate Size 3.4 Grading of Fine Aggregate 3.5 Coarse Aggregate Content: SSD 3.6 Fine Aggregate Content: SSD 4 Water 4.1 Free Water Content 5 Admixtures 5.1 Admixture Type 1 Dosage 5.2 Admixture Type 2 Dosage 6 Summary (Batch weighs (SSD) Per Cubic Meter of Concrete) Grade Slump Cement Coarse Fine Agg Agg 40 100±25mm 398 1000 695 40N/mm2 at 28 days in accordance with BS 5328 4.6 N/mm2 7.5 N/mm2 47.5 N/mm2 0.46 Pump Concrete 100±25mm Ordinary Portland Cement 398kg/m3 Crushed Granite Natural Sand/ Manufactured Sand 2.60-2.65 20mm BS 882 Table 5 1000 Kg/m3 695 Kg/m3 185 Kg/m3 Penetron (mix design) Admixture 0.8 kg per 100 kg of cement Daratard 88. Water reducing, plasticizing and set retarding 550 ml per 100kg cement Kg/m3 Water 185 Admix Penetron 3.18 A/C W/C Density 4.26 0.46 2281.18 - 35 - Integral Capillary System Concrete Waterproofing APPENDIX B PHOTOGRAPHS A6127/CHF A crack connecting

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with tie pin with sign of Efflorescence was observed on wall 1 Sign of efflorescence was found along the crack line on wall 1. The location of sample S1 extracted at the cracked area on wall. A 75mm diameter core containing a crack at Wall 1 was extracted for laboratory analysis. - 36 - Integral Capillary System Concrete Waterproofing A6127/CHF A crack perpendicular to the exposed surface was seen in core S1. Core S2 was extracted at the tie pin on wall 1. Relative thick whitish substance was on the surface of core S2. Sign of efflorescence was found along the crack line where core S3 was taken on wall 1. A crack perpendicular to the exposed surface was seen in core S3. A crack perpendicular to the exposed surface was seen in core S3. - 37 - Integral Capillary System Concrete Waterproofing A6127/CHF Sample S3: Some crystals grew in the crack. Sample S3: Abundant coarse-grained crystals in the crack. Sample S2: Laminated CaCO3 crystals on the surface of the concrete.

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The width of the field is 3.88mm under plane light. Sample S2: Laminated CaCO3 crystals on the surface of the concrete. The width of the field is 3.88mm under crossed polarized light. Sample S3: Coarse-grained elongated crystals and fine-grained needle-like crystals were lining the crack. The width of the field is 3.88mm under plane light. Sample S3: Backscattered electron image (BEI) showed some crystals was in the crack. - 38 - Integral Capillary System Concrete Waterproofing A6127/CHF Sample S3: Backscattered electron image (BEI) showed elongated crystals and fine needle-like crystals in the crack. Sample S3: High magnified view of needle-like crystals in the crack. Sample S3: Secondary electron image (SEI) EDX spectrum of elongated crystals in the crack. EDX spectrum of needle-like crystals in the crack. Sample S3: Secondary electron image (SEI) showed coarse-grained flaky crystals in the crack. Sample S3: SEI image showed the crystals in the Crack. - 39 - Integra

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l Capillary System Concrete Waterproofing Client ICS/Penetron International Ltd., 45 Research Way, Suite 203, East Setauket, NY 11733 Project Information of Client Subject Laboratory Testing of Penetron Waterproofing System Report No.: 95-387 Date: 01/24/95 Reference is made to our report No. 94-6175, dated December 21, 1994. In that report, effects of Penetron coating on the properties of concrete were reported. As indicated in that report, the depth of penetration of some of the components of Penetron were as deep as 50 mm, although most penetrations were down to 10 mm depths of the concrete surface. At the Client's request, additional studies were performed to determine and photograph the type of materials penetration or diffusing into the concrete from the Penetron coating. In order to perform these tests, the test techniques used were scanning electron microscopy and energy dispersive x-ray diffraction methods. TEST RESULTS 1. Scanning Electron Microscope (SEM) Tests The concre

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te core section tested, was coated with a minimum of gold in order to provide a surface, which could be studied by light microscopy and compared to the SEM images. The photographs taken under SEM are presented on Attachment I. 2. X-Ray Diffraction Analysis According to the attached four spectrums of x-ray diffraction, there is a calcium accumulation in the concrete below the Penetron coating to 25 to 50 mm depths. Calcium appears to be in the form of Ca(OH)2 and calcium-silicate gel. Obviously, these crystalline growths are the diffusion products of the components of the Penetron coating on the concrete surface. Below 50 mm depths Ca(OH)2 is less while the silica content (from the cement) becomes dominant. - 40 - Integral Capillary System Concrete Waterproofing CONCLUSIONS Based on these test results, it is our opinions that Penetron coated concrete surfaces develop improved concrete microstructure and waterproofing properties. KS/smd cc: (1) Client Robert Revera - 41 - Integra

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l Capillary System Concrete Waterproofing - 42 - Integral Capillary System Concrete Waterproofing Client: ICS/Penetron International Ltd., C/o All Island Testing Labs. Project: Information of Client Subject: Laboratory Testing of Penetron Material for Chemical Resistance Report No. 93-3981 Date 10/19/93 At the request of the Client, laboratory tests were performed to determine the chemical resistance of Penetron treated concrete. Experimental Design The concrete used for the study had a design strength f"c = 4000 psi. The concrete mix proportions are presented on Attachment 1. The concrete specimens used were saw-cut from 6 x 12 inch concrete cylinders. The specimens were 2 inches thick and 6 inches in diameter. At the time of the study, the concrete was 28 days old. The Penetron material (which was received in powder form in a sealed bag) was mixed with water into a slurry. The ratios were: - 2 parts Penetron - 0.8 parts water The slurry was then applied on all surfaces of the c

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oncrete specimens by brushing. After the final setting of Penetron the surfaces of the specimens were moistened and placed in a regular concrete curing room for 14 days at 73 OF and 100% relative humidity. At the end of 14 days, the specimens were removed from the curing room and placed in various chemical solutions which provided a wide range of pH levels and corrosive conditions. - 43 - Integral Capillary System Concrete Waterproofing Test Results TYPE OF TREATMENT PH Penetron Treated Dilute Hcl 1B No Penetron 2A Penetron Treated SAMPLE NO. SAMPLE TYPE 1A 2B OBSERVATIONS 7 day 28 day 3 No Effect No Effect Dilute Hcl 3 No Effect Surface Weathered Dilute H2SO4 3 No Effect No Effect No Penetron Dilute H2SO4 3 No Effect Surface Weathered 3A Penetron Treated Rain Water 4 No Effect No Effect 3B No Penetron Rain Water 4 No Effect Surface Weathered 4A Penetron Treated CaCl2 7 No Effect No Effect 4B No Penetron CaCl2 7 No Effect Slight E

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ffect 5A Penetron Treated NaOH 11 No Effect No Effect 5B No Penetron NaOH 11 No Effect No Effect CONCLUSIONS Based on these test results, the following conclusions were drawn: 1. The Penetron treated concrete was found to be resistant to acidic and alkaline conditions ranging between pH values of 3 to 11. Also, chloride containing solutions did not have any measurable effect on the Penetron concrete. 2. The untreated concrete (control samples) had surface weathering when exposed to pH of 3, rain water chlorides and sulfate solutions. KS/smdcc: (1) Client Doug Quick - 44 - Integral Capillary System Concrete Waterproofing ATTACHMENT I CONCRETE MIX DESIGN USED FOR THE PENETRON TREATMENT TESTS MATERIALS AMOUNTS PER CUBIC YARD Portland Cement, Sacks 6.0 Portland Cement, Lbs 564 *Sand, Lbs 1450 *Coarse Aggregate 1860 Water, Ga 36.3 Water, Lbs 302.4 W/C Ratio 0.54 Slump 4.0 Entrapped Air, % 1.8 (*) SSD basis - 45 -