Due to the variability of field conditions, selection of the proper material for the intended application and installation is the sole responsibility of the applicator.Įpoxy injection is an economical method of repairing non-moving cracks in concrete walls, slabs, columns and piers and is capable of restoring the concrete to its pre-cracked strength. Important: These instructions are intended as recommended guidelines. Simpson Strong-Tie Research and Testing Laboratory at WSU.Simpson Strong-Tie Materials Demonstration Laboratory at Cal Poly.New Product Testing in a Virtual Environment.Outdoor Living: Where Great Backyards Begin.Soft-Story Retrofit for Building Owners.
EPOXY SLAB CRACK REPAIR SOFTWARE
This operation is repeated for the other pipes also. The injection nozzle is then withdrawn and the hole sealed with epoxy mortar. Pressure of 3.5 to 7 kg /cm 2 is normally used.Īs soon as the epoxy comes out from the adjacent open pipes, they are plugged and the pressure is increased to the desired level and maintained for 2 to 3 minutes. The injection is done using suitable nozzles connected to air compressors or by hand operated modified grease guns. All other pipes, except the adjacent ones are blocked by wooden plugs. Holes of 7 - 10 mm diameter is then drilled along the cracks and copper or aluminium or polythene pipe pieces of 6 - 9 mm diameter is fixed as grout nipples around the nails and allowed to rest on them.Įpoxy formulation is injected from the bottom most pipe. Nails are driven into the cracks at 15 cm to 50cm intervals along the crack. The ‘V’ groove cut is fully sealed with epoxy mortar at least one day in advance before epoxy injection. Loose materials are removed by using compressed air.
EPOXY SLAB CRACK REPAIR MANUAL
Then cracks in concrete is cut open into a 'V' groove about 10mm deep by mechanical or manual method.
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The area to be epoxy grouted should be made free from oil, grease, dust and all loose and unsound materials. Surface preparation is the first step in repair of cracks in concrete. Procedure for Epoxy Injection Grouting in Concrete Structures:
Based on the width of crack, depth and extent of cracks and other relevant details, the viscosity of the resin hardener mix, their proportions, pot life, application procedure etc. Very low viscosity epoxy resin and hardener composition is used for injection grouting of cracks. The filler material to be used should be based on the manufacturers specification. Silicon four is one of the filler material used. In such cases fillers are used to fill the cracks before epoxy grouting. Grouting of wide cracks requires large quantity of grout materials. Equipment required for epoxy based injection grouting, procedure for grouting will be discussed here.Įpoxy based grouting is preferred to cement due to property of quick setting, very low shrinkage, excellent adhesion, high strength, low viscosity to penetrate even hair cracks and good resistance to most of the chemicals.īut epoxy grouting being expensive, should be used when cement grouting is not suitable for crack repair for the required functioning of the structure.Įpoxy grouting is done based on the type of crack, width and depth of crack in concrete structure. □ Reading time: 1 minuteEpoxy injection grouting is a method of repairing cracks in concrete structures.