CLIENT ENGINEER

ARABTEC CONSTRUCTION

SELF COMPACTING CONCRETE WITH KIM (WATER PROOFING ADMIXTURE)

SLIDE NO. 1DAMAC HEIGHTS

By Ravi Chokkalingam,

QA/QC Manager

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SLIDE NO. 2DAMAC HEIGHTS

• PROJECT HISTORY

RAFT REBARS READY FOR POUR–( INSPECTED AND APPROVED BY CONSULTANT)

FLOODING HAPPENED,ONE WEEK PRIOR TO RAFT POUR DUE TO UPWARD WATER PRESSURE

WATER PROOFING DAMAGED

WATER PROOFING SUB-CONTRACTOR AND BASF TECHNICAL TEAM VISITED THE SITE AND RECOMMENDS FOR

REMOVAL OF RAFT REBARS & RE DOING THE WATER PROOFING TO ENSURE 20 YEARS PERFORMANCE WARANTEE

CLENT HAD REJECTED TO REMOVE REBAR & RE DOING WATER PROOFING

CLIENT INSTRUCTED TO USE, KIM- WATER PROOFING ADMIXTURE,FOR RAFT AND RETAINING WALL

ATC VISITED THE PROJECTS (THAT USED KIM) AND FOUND KIM CANNOT BE USED WITH NORMAL CONCRETE.

THE TRIAL MIX DONE FOR NORMAL CONCRETE WITH KIM WAS UNSUCCESSFUL.

HENCE ATC PROPOSED “SELF COMPACTING CONCRETE” WITH KIM

CLIENT

ARABTEC CONSTRUCTION

ENGINEER

DAMAC HEIGHTS SLIDE NO. 3

RAFT PREPARATIONS

MATERIALS•SELF COMPACTING CONCRETE –C 60/10 –FOR RAFTC 50/10 & C 70/10 –FOR RETAINING WALL

•KIM (KRYSTOL INTERNAL MEMBRABNE)--WATER PROOFING ADMIXTURE

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SLIDE NO. 4DAMAC HEIGHTS

RAFT POUR --APPROVALS

APPROVALSMATERIAL –SCC –C 60/10 with KIM admixtureSUPPLIERMETHOD STATEMENT AND ITPMIX DESIGN ( 5 Options submitted)TRIAL MIX RESULTS (Trials done for 5 options & 1 option approved)MOCK UP FOR HEAT OF HYDRATION (Mock up done for standard dimension -1.50*1.50*1.50 metre as well as for raft height of 4.20 metre)MOCK UP FOR PUMPIMG OF SCC WITH KIM (for truck quantity of 8 cum) to monitor workability.

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SLIDE NO. 5DAMAC HEIGHTS

RAFT PREPARATIONS

Concrete Check point (10 nos) with platformHiring of lab technicians for day and night shiftTool box talk to project team, QA/QC Engineers from other projects and external techniciansOnly QA/QC team has Trial Mix Experience with KIM materialWe visited projects done with KIM material and spoke to the people to understand the experience and know the control measures to be taken at site.

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SLIDE NO. 6DAMAC HEIGHTS

Krystol Internal Membrane™ (KIM®)

Krystol Internal Membrane™ (KIM®) is a chemical admixture in dry powderedform, effective in creating waterproof concrete.

HOW DOES KRYSTOL® TECHNOLOGY WORK?When combined with water and concrete, Krystol® reacts with un-hydratedcement particles to form millions of needle-like crystals. Over a period ofweeks and months, these crystals grow, filling the naturally occurring poresand voids in concrete, and permanently blocking the pathways for water andwaterborne contaminants.

Later, if cracks form due to settling or shrinkage, incoming water triggers thecrystallization process and additional crystals begin to grow, filling cracks andensuring that the structure’s waterproofing barrier is maintained andprotected.

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KIM® HSThis specialized version of KIM® is available with reduced air-entrainment properties. KIM HS isdesigned for applications where freeze/thaw resistance is not required. Typically, concrete withlower air content will produce higher compressive strength results.

FEATURES•Replaces unreliable exterior membranes, liners and coatings•Easily added directly to ready mix truck or at batch plant Self-•seals hairline cracks up to 0.5mm (0.02 in)•Reactivates in the presence of moisture—even years later•Effective against hydrostatic pressure—up to 140m (460 ft) of head pressure•Waterproof from any direction (i.e. positive or negative side)•Impervious to physical damage and deterioration•Certified non-toxic and safe for contact with potable water—NSF approved• Reduces concrete shrinkage and cracking.•Increases compressive strength of concrete•Provides excellent resistance to waterborne chemicals such as sulphates , chlorides, and acids•Reduces segregation in high slump concrete

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SLIDE NO. 8DAMAC HEIGHTS

ADVANTAGES•Works where other systems fail to eliminate leaks and water damage•Eliminates the cost of labor and materials that would normally be involved with membrane systems.•Reduces potential for human error - insufficient seam coverage, poor surface preparation and inadequate adhesion•Backfill sooner without concern for membrane damage Does not require replacement or maintenance•Build to the property line - easily waterproof blind walls No waiting while contractors apply external membranes.Protects concrete from corrosion of reinforcing steel•Protects concrete from damage due to freezing and thawing cycles Reduces insurance cost•More cohesive mixes in high slump or highly fluid concrete compatible with SCCKEY BENEFITS•Increased reliability and quality control•Lower the cost of waterproofing by up to 40%•Shave weeks off the construction schedule•Reduce the cost of maintenance and repairs•Increase revenues with a larger building footprintWARRANTYKryton International Inc. warrants that its products are free from manufacturing defects and, when applied in accordancewith the current specification and application instructions, will perform as so stated in its product literature.Waterproofing performance of the KIM® Admixture is warranted for 25 years. Kryton will provide sufficient material towaterproof areas shown to be defective due to KIM admixture material deficiencies. In addition to our standard productwarranty, performance warranties are available for individual projects. Specific warranty time periods and inclusivedetails are provided based on project requirements and geographic region. Please refer to your Kryton representative forproject specific performance warranty information.

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SLIDE NO. 9DAMAC HEIGHTS

TYPICAL APPLICATIONSKIM® is recommended for all concrete that will be subject to water pressure.

Commercial•Underground parking Structures, foundations, elevator pits, condominiums and office towers•Recreational Facilities such as aquatic centers, aquariums, zoos, water parks and marinas•Architectural water features like fountains & waterfalls

Industrial•Water containment reservoirs and water treatment tanks, sewerage and manholes•Traffic tunnels, below-ground pipelines and subway tunnels•Bridges , dams, and highway infrastructure

Residential•Concrete homes, basements, foundations, swimming pools, decks, bathrooms, garages and exteriors

APPLICATION INSTRUCTIONSA pre-pour conference with the general contractor, forming contractor, finisher, concrete supplier and materialstesting engineer is strongly recommended. Be sure to distribute and follow the instructions contained inApplication Instruction 102 through 108 as applicable. For more instructions or information contact the technicalservices of Kryton International or your local Kryton representative.

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SLIDE NO. 10DAMAC HEIGHTS

BATCHING AND MIXING•Simply add KIM directly to the concrete mixer during batching. When using mixer ready bags, bags will disintegrate andcan be added directly to the mixer.•KIM can be added at any time during the batching process. However, the addition timing and order of admixtureaddition may affect plastic properties.•Allow KIM to thoroughly mix at medium/high speed for at least 10 minutes prior to placing.

PLACING AND FINISHING•Superior consolidation of the concrete is essential to achieve the performance and benefits of KIM.•Place and finish in accordance with ACI guidelines.•KIM improves flow, pumpability and placement properties of plastic concrete. If the slump is below specification, add amid or high range water reducer to achieve the required slump. Only add additional water with the approval of thequality control technician. Record all water additions on the batch ticket and do not exceed the specified water-cementratio.•KIM treated concrete will typically delay the initial and final setting times of the concrete. Adjust your finishing orstripping schedule accordingly. Evaporation retarder may be needed.

CURING•Proper curing is essential to achieve the performance and benefits of KIM.•Cure in accordance with ACI guidelines (ACI 308.1).•If a curing compound is use, it must conform to ASTM C309

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SLIDE NO. 11DAMAC HEIGHTS

Raft –updateRAFT QUANTITY : 7600 CumDEPTH OF POUR : 4.20 METERSDURATION OF POUR –46 Hours (Estimated)SCHEDULE TO POUR DURING APRIL (HIGH AMBIENT TEMPERATURE- 36 degree)SCC BATCHING TO BE DONE WITH ICE CONTENT of 100% TO ACHIEVE THE PROJECTSPECIFICATION REQUIREMENT FOR HEAT OF HYDRATION(Maximum : 70 degree and Differential : 20 degree)

Limitations of using KIM

No prior experience of using KIM materialBASF / FOSROC /DAVID BALL (Pudlo) are the brands normally used.KIM CANNOT BE ADDED AT CONCRETE BATCHING PLANTKIM MUST BE ADDED AT SITE,TO BE MIXED FOR 15 mts AND SENT FOR POURINGKIM ENHANCE TEMPERATURE OF CONCRETE BY 2 DEGREE INSTANTLYSETTING TIME ALSO HIGH ( Initial : 20 hours / Final :23 hours)Testing and sampling to be done before and after adding KIM material to the

delivered concrete

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SLIDE NO. 12DAMAC HEIGHTS

RAFT POUR-Process

CONCRETE CHECK POINT –10 nos WITH PLATFORM

CONCRETE ARRIVAL AT SITE

CHECK SLUMP / TEMPERATURE / COLLECT SAMPLES / CUBES BEFORE ADDING KIM

ADD KIM @ 5kg/cum (TRUCKS WILL ARRIVE WITH DIFFERENT QUANTITY)

KIM MUST BE MIXED FOR 15mts

CHECK SLUMP / TEMPERATURE / COLLECT SAMPLES AFTER ADDING KIM

CLEARANCE FOR POURING WITH RECEIPT

Prepared by: Ravi Chokkalingam