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It is a process of filling the cracks, voids or honeycombs under pressure in concrete or masonry structural members for repairing of cracks, strengthening of damaged concrete or masonry structural members.
Product Description : Sika Injection-101h is a low viscous, fast foaming and solvent-free water-reactive polyurethane injection foam resin, which cures to a dense flexible foam with a fine cellular structure.
Characteristics / Advantages
Storage : Storage Conditions / Shelf-Life: 6 months from date of production if stored in unopened, undamaged and original, sealed packaging, in dry conditions at temperatures between +5oC and +30oC.
Application Instructions : By single action piston pump operating at high pressure. By twin piston pump when mixed with water (100:15) to produce foams of different densities. Sealing cracks(minimum crack width 0.2mm,for smaller cracks consult Sika technical department) Do not inject Sika Injection-101h solution containing more than 50 % by weight of Sika® Injection-101h as localized high pressure may develop because of excessive foaming & swelling and may damage/ destroy the construction. Drill 15-22 mm holes along the side of the crack at 45° angle. Drill the holes to intersect the crack midway. Install injection packers in the holes and tighten. If the cracks to be injected are 10mm wide or more at the surface, pack open cell polyurethane foam saturated with Sika Injection-101h into the crack. Spray the saturated foam with a small amount of water to activate the grout and create a surface seal. Pump Sika Injection-101h at >20 bar into or behind fissures or into voids which are allowing water to infiltrate into unwanted areas. If voids in concrete being injected contain insufficient moisture to activate the grout inject a small amount of water prior to injecting the grout. Pump Sika Injection-101h for approximately 15 seconds and then pause to allow the material flow into all the cracks and crevices. Keep pumping, watch for material flow and water to appear at the surface or the next packer. When movement stops or Sika Injection-101h appears at the next packer move to the next packer and inject. When sealing vertical cracks start at the bottom and work upward.
Application Method / Tools : Use injection pumps suitable for single part products, such as Sika Injection Pump EL-1, EL-2, Hand-1 or Hand-2.
Cleaning of Tools : Clean all tools and application equipment with Sika Colma Cleaner to remove any polyurethane residue immediately after use. Do not leave Sika Colma Cleaner in the injection pump. Hardened/cured material can only be removed mechanically.
Notes on Application / Limitations The waterproofing process is divided into three phases :
Value Base : All technical data stated in this Product Data Sheet are based on laboratory tests. Actual measured data may vary due to circumstances beyond our control.
Health and Safety Information : For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Material Safety Data Sheet containing physical, ecological, toxicological and other safety-related data.