The difference between concrete and grouting material

Concrete, referred to as 'concrete ( tóng） ': it is to point to by gelled material to aggregate bond into the overall engineering composite materials. Usually speak of concrete is a word refers to using cement as cementing materials, sand, stone aggregate; With water ( With or without additive and admixture) According to certain proportion coordination, after mixing, molding and curing of cement and concrete, also known as the common concrete, it is widely used in civil engineering. grouting material with high strength material as aggregate to cement as binder, with high flow, micro expansion, made from materials such as anti segregation. It's in the construction site with a certain amount of water, stir well after use. Grouting material has good artesian, rapid hardening, early strength, high strength, no shrinkage, micro expansion; Nontoxic and harmless, not aging, on the water quality and the surrounding environment pollution-free, good tightness, rust etc. In construction has reliable quality, reduce cost, shorten the construction period and convenient use. Force situation fundamentally change equipment base, and make it evenly carry the full load of the equipment, to meet all kinds of machinery, electrical equipment, Heavy equipment and high precision grinding machine) Installation requirements, is the ideal filling material of the pad installation times. 1, the control of concrete mixture ratio, and concrete construction mixture ratio must pass the test, the technical indexes meet the design and construction requirements, and can be used only by the examination and approval. Ingredients must be issued by the audit after concrete construction, and strictly according to the concrete construction ingredients list issued by the ingredients, it is forbidden to do STH without authorization changes. 2, concrete pouring control, concrete blanking uniformly and orderly, not allowed to directly impact the template and brace. Concrete stacking height should not be more than 1 m, aggregate concentration, with artificial paving method, the uniform distribution of aggregate to epoxy grout more places. Strict control of concrete slump, guarantee the workability of concrete. 3, the vibration control of concrete, vibrating at the last line in the links of concrete pouring process, must according to the operating rules layered homogeneous vibrating compaction, the grouting material is without vibration, direct infusion, with concrete coarse aggregate concrete vibratory time is no longer significant sinking, and began to pan pulp shall prevail. Each layer of concrete vibrating until bubbles out, each location of the vibrating time of 20 ~ 30 s. Concrete vibratory operating in strict accordance with the specification, too, to prevent the occurrence of secrete water pumping concrete phenomenon.