hbbd```b``)GA$dZ "e`A0L.b% ,b"E@d*X(dbsEz t Tie Wire 2.12 PREFORMED CONTROL JOINT Bond breakers are normally used on tilt-up walls and precast segments to ensure the right pieces are cast together. 127 0 obj <> endobj Over-application can result in delays due to drying, discoloration, panel surface dusting, surface irregularities, etc. Tip To Tip Tie 0000005793 00000 n panels by reducing occurence of dirt accumulation on the casting slab. TenCate develops and produces materials that function to increase performance, reduce costs and deliver measurable results by working with our customers to provide advanced solutions. Environmentally Friendly: Material is CFC and HCFC-free. Provides both curing and bond breaking eliminates need for double inventory and handling. produce a water impermeable barrier on the surface of the casting slab. These types of bond breakers are made of crude resins to form the thin film. Bond breakers and their effective use - Concrete As such, the prescriptive crack control recommendations detailed in Table 1 increase the area of horizontal reinforcement and decrease the maximum control joint spacing of half high unit assemblies compared to full height unit assemblies. Control Joints for Concrete Masonry WallsAlternative Engineered Method. Thank you for helping keep Eng-Tips Forums free from inappropriate posts.The Eng-Tips staff will check this out and take appropriate action. The preformed gasket provides a fire resistance rating of at least two hours. The reactive bond breaker will react, forming a crude soap. Stop Organic Felt or geotextile fabric 6" below top of wall. Sure Lock Tie When a bond breaker is needed at a construction joint, a curing compound, PRODUCT DATA SHEET Sika BondBreaker W Meets Application Requirements of: ASTM D-7174 Standard Specification for preformed closed cell polyolefin expansion joint fillers for concrete paving and structural construction. Resists wash off from normal rain and dew once dried. Stop Organic Felt or geotextile fabric 6" below top of wall. We have received your request and will respond promptly. Water-Based Concrete Bond Breaker. Compression Set: 18.3 (%), ASTM D3575-00 Suffix B. Tensile Stress: 103 (psi), ASTM D3575-00 103 Suffix T MD/CMD. TILT-CRETE Excellent stability; does not require continuous mixing throughout the application; the material must be mixed only prior to application. If TILT-CRETE application as a cure to the casting slab is delayed for several hours or until the following day, the surface should be moistened with water before application of TILT-CRETE. REGAN Vest: Inside Denmark's secret nuclear bunker Non-membrane bond breakers are subdivided into reactive and non-reactive. Provide a continuous 1'x1' clean gravel or crushed rock drain for wall heights 3 ft. and higher. Pour concrete and finish. The tape shall be compatible with the sealant. German engineers have been Bond Breakers - White Cap 6) for more detailed information. the bonding of subsequent concrete pours. 0000068270 00000 n The polyurethane material does not adhere to sealants, so proper 2-sided joints are created and the joint meets sealant joint specifications requireing a bond breaker. MASTERSEAL NP1 CAULKIING SEALANT WHITE 10 OZ TUBE (50426722). Proper mixing of TILT-CRETE prior to each use is very important to ensure successful panel separation and lifting. Easy-Lift E. 9. 50 foot rolls. Stud Rail Small dabs of bituminous cement may be used to hold felt sheets in place during subsequent placing operations. Movement joints such as control joints are one method used to relieve horizontal tensile stresses due to shrinkage of the concrete masonry units, mortar, and when used, grout. Transition Splice Coupler endstream endobj startxref Like all construction systems, design decisions significantly influence field performance of the concrete masonry wall system. If you have any questions or would like to learn more, please contact us. control joints should extend through the facing when wythes are rigidly bonded, such as plaster applied directly to masonry units or for adhered veneer. Because the lintel is not laterally supported at the bottom due to the slip plane, control joints capable of providing load transfer between panels are required, such as the joints shown in Figures 3a, 3d, 3e, 3f, 3h and 3i. Use asphalt felt (No. ft./gal, Coverage will vary due to various amounts of different fillers, extenders, or additives in the concrete mix that can result in the concrete mass and finished surface having a higher than normal porosity and some very porous hotspots. Coverage ratios must be adjusted to compensate for resulting penetration and additional coverage coats required to provide proper surface treatment. Welding Coil Tie Plastic sheet, felt paper, a layer of sand or a chemical bond breaker can be used to prevent bond to the base slab. 2), for more information. 0000002187 00000 n WebA bond breaker is a separator applied between surfaces of concrete. TILT-CRETE concrete cure and bond-breaker is a new, innovative, unique formula of proprietary, reactive organic materials in an aqueous dispersion. TILT-CRETE is low-VOC formulation that does not contain wax or hydro-carbon resins. Foundation walls traditionally do not include control joints due to concerns with waterproofing the joint to withstand hydrostatic pressure. Are there VOC requirements that need to be addressed. Because no mechanical interlock is provided between the two panels separated by this joint, out-of-plane loads are not transferred across this joint. This premium-grade bondbreaker contains organic compounds that react with the concrete to ]$Ez'3BxyrHCs pHuNmX}\eB47Ar3x!ILCnT_3Ix+N!C{*{?y%Pzn$.(9(}] Ijcj2R\"r#GVw |agNAcXL An engineered method is presented in TEK 10-3 Control Joints for Concrete Masonry WallsAlternative EngineeredMethod, which is based on limiting crack width to 0.02 in. adjacent to corners of walls or intersections within a distance equal to half the control joint spacing. Be sure that the top of the expansion joint foam is set at the top of the intended concrete pour. Toggle Coil Ties Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. Vapor Retarders Evy%_FNZi-iYiF$wb*dPVEvVXi1w,H,M 4!}&r%Vr~ JR_yVI&f(^Vjrv{>Pg29SXeK= Wale Holder Welcome to WordPress. Cleanup To remove improperly or over-applied TILT-CRETE from panels, W. R. MEADOWS recommends using a commercially available, heavy-duty, concrete degreaser/stripper. Name may only contain letters, numbers and the characters : - _ or space. When a bond breaker is needed at a construction joint, a curing compound, form release agent and the like can act as a bond breaker. CONCRETE Lap edges and ends of asphalt glass felt 6 inches. Another option is to provide a horizontal slip plane between the two materials to accommodate the differential movement. In this scenario, TILT-CRETEs resistance to rain is highly reduced. Bond breakers are engineered products that form a membrane, allowing the surfaces to be separated easily. Provides effective bond breaker between casting slab and tilt-up or lift-slab panel. Fire Resistance Rating of Concrete Masonry Assemblies. The gaskets are generally available in either PVC, complying with ASTM D2287, Standard Specification for Nonrigid Vinyl Chloride Polymer and Copolymer Molding and Extrusion Compounds (ref. Curing: 200 400 sq. 0000115823 00000 n and clean panel appearance. SHELF LIFE A bond breaker is a substance applied to concrete surfaces to guarantee that there is permanent bonding between the surfaces. Wallform Components Already a member?
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