The polymer structure of rapid repair concrete hole repair

Concrete hole how to repair the hole more than cover thickness is refers to the concrete surface, but no more than a third section size, structure, there is a gap, local or part not concrete. Cause analysis: (1), inside and outside the template from the narrow, vibrating difficulties, aggregate particle size is too big, reinforced too close, cause was reinforced concrete blanking stuck, lower forming holes; Poor liquidity of concrete, or concrete segregation, coarse aggregate together at the same time, make concrete pouring confusing form holes; (3) not vibrating in casting order, there is leakage point of vibration form holes; (4) no layered casting, or layer is too thick, the lower reach, concrete vibratory action radius forming loose state forming holes; When it comes to repairing concrete hole problem, we first study the preventive measures. Preventive measures: (1) wait, can use small material, aniseed ratio of two kinds of concrete, the first two concrete mix sauce, horizontal layered casting, attached type vibrating plate, other parts of the concrete wait with aniseed casting by the above method, internal vibrator vibration; Diction, corner of artifacts, and integration of key check, pay special attention to vibrating, cannot use mechanical vibration, can be switched to manual dao, dao should be repeated several times, to ensure that the concrete does not appear pore; (3), of concrete mixed with high efficiency water reducing the seam an agent, to ensure the liquidity of concrete meet the job requirements, in all aspects of transportation and casting of concrete measures to ensure the concrete segregation; (4), a discharging to avoid too much too much, should vibrating close-grained, not allowed to appear leakage point of vibration; 5], good fight debris in the mixing of concrete. Concrete hole should be prevention, repair is complementary! Repair method introduces below! Repair methods: (1), or a wet sack on the repair before use wet cotton fill head, moist 72 hours; [2] will repair, not dense concrete and outstanding cut to aggregate particles, the upper mouth of the cave on the outward inclined, the lower level of founder; (3), with high pressure water and steel wire brush to rinse at the grass-roots level; (4), to repair the polymer structure of rapid repair materials should be adopted; 5], around the hole to put a layer of concrete interface treatment seam an agent, and then quickly with high polymer structure repair material, in order to avoid contact between old and new concrete surface cracks; [6], for it is not easy cleaning of deep cellular, holes, tapping defect size, increase due to clean up the structure have been much more reduced, should adopt high strength high polymer structure of rapid repair materials location, quantity and depth of grouting hole, according to the actual situation of honeycomb, holes and grout diffusion range, hole number, generally not less than two, a grouting, a vent or eliminate seeper. Grouting method is as follows: in filling concrete condensation of 2 d, which is equivalent to strength reaches 1. 2 to 1. After 8 n / 2 ㎜, with grouting grouting machine. Pressure is 6 ~ 8 atmospheric pressure, minimum 4. After grouting initial setting for the first time, in the original buried pipe by the second grouting, most can be pumped a lot of cement slurry, and squeezed water from the exhaust pipe. Grouting is removed the pipe after 2 ~ 3 d, the rest of the pipe space filled with mortar. Suggestion: in the process of concrete construction, we must carefully read the causes of the holes, try to avoid this kind of phenomenon. One thousand appear this kind of phenomenon, don't worry, also can use my company's structure of polymer rapid repairing material for rapid repair!