The aggregate level of grain shape and matching the effect of grouting material Zhengzhou grouting material

grouting grouting material manufacturer grouting material price & # 8203; Natural stone has high strength, for C50 & # 12316; C80 grouting material, the strength of the stone itself is not the most important, and should pay attention to the factors of grading, grain size, grain shape and surface condition, etc. These factors affect the strength of the grouting material, and affect the workability of new mixing grouting material. Therefore, the ideal stones should be clean, grading is good, the grain shape such as diameter, getting as close as needle flake particle with very irregular particle decrease as far as possible.             Grain shape and surface heat & # 8195;           Particles aggregate particle shape on the surface of adverbial clause: the provisions of the characteristics of no shrinkage grouting material test yingkou new high-strength non-shrink grout material mixing grouting material than the influence of hardening of the grouting material. Accords with a requirement in order to make the workability of grouting material, surface roughness, polygonal or slender particles and the surface is smooth, grain shape of round particles, compared to just need more water mud, thus affect performance and increase costs.               The geometric features of grain shape is round, polygonal, acicular or flake, etc. The grain shape obtained by wear because has lost its edge horn and tend to be more round. Mining of stone in the river, the general has very round grain shape. In addition, sometimes ball degrees one word to describe the grain shape of coarse aggregate, its definition is the ratio of surface area to volume. Globular or very round particles, the sphericity is very low, sphericity and acicular or sheet-shape grains is very high.               Aggregate should be no flake or needle-like particle, as far as possible in the long and thin, the aggregate particles of knife should as far as possible to avoid or limit shall not exceed 15% of the aggregate total mass. This provision is not only important for coarse aggregate, and the mechanism of grouting sand and high strength material brand. Equally important, because if they contain long and thin particles, can make of grouting material mixture workability, slump loss is bigger.             The so-called surface characteristics refers to the extent of the aggregate surface is smooth or rough, is according to the visual assessment. The depending on surface hardness, particle size of aggregate, parent rock porosity and then experienced by friction. Obsidian, and solid slag showed smooth, vitreous structure. Pebble itself is smooth, granite, basalt and limestone rubble of coarse structure, pumice, expansion slag and sintered fly ash is the porosity of the honeycomb structure and is visible to the naked eye.             Strength of grouting material especially the bending strength are influenced by the surface features at an early age. The structure of rough some seems to be beneficial to between cement paste and aggregate to produce strong physical bond. To late, because between cement paste and aggregate to form the more cohesive force, the effect is not so important.             Aggregate level matching grouting material mixture of the dosage of the cementing materials have a significant impact. In the mix proportion design of grouting material should be preferred to choose continuous gradation. Single particle size should be used to assemble with continuous graded for grading, also can use continuous graded mixture, in order to improve its grading or match the continuous graded into larger granularity, unfavorable use of 'single' single grain level compound grouting material. If it must be individually using single particle size should be a technical and economic analysis, and through experiment prove segregation or affect the quality of the grouting material will not occur. ​