Common quality problem of CGM high-strength non-shrinkage grouting material to prevent them

CGM high-strength non-shrinkage grouting material CGM high-strength non-shrinkage grouting material manufacturer, surface uneven phenomenon: after grouting grouting material in surface will be uneven, or have different plate thickness, surface rough. The causes of 1. After grouting material casting, the surface request to disable the spade rackets, unused float leveling calender, cause there will be a rough surface; 2. If the template is not supported on a hard soil layer, or insufficient bearing surface, or loose and bubble water, can lead to make the new water grouting material early curing prone to uneven subsidence; 3. In the grouting material a certain strength, that do not meet the normal people or material handling operation, easy to make the surface phenomenon appears concave uneven or impressions. Prevention and control measures to operate strictly according to the construction of the normal specification, casting after grouting material, should control mark or play line according to the normal level with potential float leveling, calender, after the final set water conservation; Construction template should have enough strength, stiffness and stability can be supported on a solid foundation, and must have the enough support area, and to prevent flooding, can assure without sinking; When pouring grouting materials, strengthening inspection, strength of grouting material to reach 1. More than 2 n / ㎜ 2, eventually have to be in on structure. Second, pits phenomenon: local surface phenomenon appears short of grouting material and many small pits, pitting, rough surface formation, but no reinforced the leakage phenomenon. The causes of 1. Rough surface template or adhesive slag cement and other sundry not clean, open mould grouting material surface is destroyed; 2. Template was not enough water damp or wet, component surface grouting material moisture is sucked, grouting material excessive water loss occur pits; 3. Template flat-fell seam is lax, local slurry leakage; 4. Template to isolate the coating uneven seam an agent, or local brush or leakage failure, grouting material surface and template binding pits; 5. Grouting material vibrating untrue, bubbles not discharge, parked in the template form pitting surface phenomenon. Prevention and cure measure 1. Template surface is clean, can not with hardened cement mortar etc sundry; Before water infuse pulp, water template should be fully wet; Template aperture, application felt paper, putty, wall tightly; Template to isolate the seam an agent should choose long-lasting, uniform coating, shall not be leakage brush. Grouting material should be layered homogeneous vibrating close-grained, to eliminate air bubbles; 2. Surface for painting, don't processing, surface paint, should be in the water piping parts fully wet, usable 1:2 or 2-1. Textured screeding with 5 cement mortar, the calender.