Why cracks grouting material

grouting grouting material cracks, one-time grouting thickness too deep usually grouting material for 15 cm below the depth of grouting, if beyond the depth should be mixed with other clean, clean and dry the stones, or layered grouting, water cement ratio is not in accordance with the goods to clarify 2 equipment, field should by weighing equipment, strict according to the commodity distribution of water-cement ratio 3, grouting material don't need a concrete vibrating grouting equipment vibration, but if the grouting layer with embedded iron plate, the casting is should use thin sheet and more resilient and elastic bamboo split down the embedded board back to twitch, vibrating, ensure that the air discharge after initial set of 4, the grouting material, should be the surface pressure light again 5 should be to ensure that the expected, the grouting hole is clean, no water. In addition template peeling of grouting material also can cause some adverse effects! CGM high-strength non-shrinkage grouting material construction process, construction process: 1, the concrete surface cut wool processing, chisel in addition to the base surface concrete laitance and vulnerable parts. Ensure the grouting on the surface of solid, no dust, grease and other impurities, such as flat on the surface of a rough surface, roughness with 10 ~ 20 mm advisable; 2, before grouting, sprinkling water on the surface of a concrete foundation covers wet linen to remain completely moist condition for 24 hours, wet water measures is critical, so as to guarantee the equipment foundation not quickly from the new water grouting material to absorb moisture, it can prevent normal coagulation grouting material. 3, before the grouting blot redundant moisture retention, surface without water phenomenon. 4, mixing tools appropriate USES ( Mortar mixer or hand electric drill mixer, metal barrels) , unfavorable use mortar machine or blender, 5, and water consumption, water consumption, according to the factory warranty regulations measurement accuracy requirements, need to strictly control, to ensure good liquidity; 6, mixing the water first, a little grouting material into the bucket, stir around 30 seconds, the remaining material inside bucket of mixing together, 3 - total mixing time 5 minutes. Should be up and down or so mobile agitator, stir to make bottom and bucket wall adhesion material can get fully mixing, but the blade don't serous surfaces is put forward, in order to avoid too much into the air.