Aggregate models plays an important role in the grouting material

grouting type high strength grouting material model CGM high-strength grouting material model of grouting material in aggregate at least three-quarters of the total volume, there is no doubt that the quality of the aggregate is quite important for grouting material. Aggregates can not only restrict the strength of the grouting material, for example, does not conform to the requirements of aggregate cannot be used to produce has enough strength of grouting material; Moreover, the properties of aggregate are greatly affects the durability and structural properties of grouting material. General classification of aggregate used in grouting material model in the aggregate, the scope of the section size can be from a few millimeters to about 1/10 of a millimeter. Although, in fact, the large size of aggregate used is different, but are composed of particles of different size, the particle size distribution and grading. In the preparation of low level of feeling, sometimes using aggregate from the yard, it contains from large to small particles of various sizes, can be called gradeless and uniformly priced goods aggregate or screening aggregate, it contains from large to small particles of various sizes, could be called traditional aggregate or screening aggregate. When preparation quality grouting material, usually takes at least two groups of different size particles aggregate, fine aggregate and coarse aggregate. Fine aggregate is often referred to as the sand, the particle is less than 5 mm; Aggregate called coarse aggregate particle size greater than 5 mm. Relatively early, people consider aggregate is an inert material, mainly for economic reasons, to make it fully dispersed filling in the slurry. But on the other hand, also aggregate can be thought of as a building material, with the aid of cement bond into a whole quanzhou grouting material adhesiveness, just want to used in construction. In fact, the aggregate is not really lazy, its physical performance, thermal performance and chemical performance will affect the baotou concrete grouting grouting material performance. Aggregate is much cheaper than cement, so in the grouting material mixture model, to the best of wuhan where there is selling shoes multi-purpose use less aggregate and cement grouting is the economy. But the economy is not a reason to use aggregate, it also caused a lot of the technical advantages of grouting materials, such as the volume of a single cement slurry is higher than that in its stability and better durability.