Can concrete crack grouting material to repair

How to use grouting concrete cracks of concrete wall crack repair, you can use grouting material repair? If the cracks in the concrete wall is the use of the grouting material to repair, and repair the effect will be very good. Grouting method is suitable for deep cracks in the cracks and repair. Grouting material should choose according to fracture type, seam can choose cement material, epoxy grouting material, high strength water soluble polyurethane grouting material, etc. ; Live seam can choose elastic polyurethane grouting materials, etc. Concrete crack repair specific operation method: (1) According to the requirements of design layout of grouting holes; 2) Grouting should be in low temperature season or the crack opening. 3) Drilling, hole, embedded grouting pipe; 4) You may refer to cement grouting construction SL62 - 94 'technical specification for construction of hydraulic structure concrete grouting of the provisions; 5) Chisel along the fissures, deep 5 ~ 6 cm wide V groove, and clean, besmear brushs fundamental wave inside the tank, fill with mortar embedded block; 6) In the pulp material inspection holes after curing strength to meet the design requirements for water pressure test, inspection hole single-hole water quantity should be less than 0. 01 l/min, unqualified must fill irrigation; 7) Water pressure check, orifice pressure grouting pressure is 50% ~ 80% design, appropriate to 0. 2 to 0. 4MPa； 8) When the end of the grouting hole sealing slurry uptake should be less than 0. 02 l / 5分钟; 9) The vertical and inclined cracks grouting from deep to shallow, bottom-up; Close to the horizontal crack grouting from low-end or plasma absorption quantity of holes; Grouting pressure limit of 0. 2 to 0. 5 mpa, when into pulp smooth grouting pressure shall be reduced; Grouting material manufacturer to remind: you wall cracks can't use concrete repair, or not too long, cracks will appear.