The intensity of grouting material - what factors influence Cement grouting material

grouting grouting grouting material manufacturer price grouting material quality is one of the main indicators of compressive strength, the strength of grouting material expression is not hard to see, grouting material compressive strength is proportional to the strength of grouting material with cement, according to the formula, when the same water-cement ratio, high quality cement than that prepared low grade cement grouting material high compressive strength. In general, water cement ratio is inversely proportional to the strength of polyurethane grouting materials and grouting materials, water cement ratio is constant, by increasing dosage of cement to improve the strength of grouting material is wrong, this time can only increase grouting material workability, increasing grouting material shrinkage and deformation.     Strength of grouting material only in temperature and humidity suitable conditions to guarantee the normal development, should according to the norms of construction shall be maintained. The temperature high and low strength of grouting material development has a certain impact. In the summer to prevent exposure, make full use of early and late of high and low temperature time grouting material; To shorten the transport and pouring time as far as possible, to prevent exposure, and increases when the tank mixture slump; Water when maintenance should not be interrupted because of grouting material surface during drying temperature, when the water cooling, the heating effect will reduce grouting material strength and crack resistance. Winter insulation against the cold, now the winter construction generally adopt comprehensive heat and steam curing.     Grouting material strength grade refers to the strength of the grouting of the compressive strength of grouting material level should be cube compressive strength standard values of the grouting material division USES the symbol & # 199; And the cube compressive strength standard values ( With N/square millimeter. ; Or MPa program) Said.     Coarse aggregate strength of grouting material also has certain influence, so, when the project starts, determine the coarse aggregate, the first by the technical responsible person when the rock strength is equal, than a pebble gravel surface rough surface, its better than pebble bonding with cement mortar, as the water cement ratio is equal or mixture phase at the same time, two kinds of material preparation of grouting materials, grouting material strength are better than pebbles.     So we usually coarse aggregate particle size control of grouting material with different engineering optimum yingkou high-strength non-shrinkage grouting material should be; Varieties of fine aggregate strength of grouting material is smaller than the aggregate impact degree, but the quality of sand quality of grouting material also has certain influence, in the construction, strict control of sand silt content within 3%, therefore, each label with sand and gravel sand quality must conform to the concrete quality standard requirements.     So, the main factors influencing the compressive strength of grouting material is cement strength and water cement ratio, to control the quality of grouting materials, the most important thing is to control the good water cement ratio of the concrete and grouting two major part. In addition, the impact strength of grouting material and other factors can not be ignored.     Due to the construction site sand quality change is opposite bigger, so the site construction personnel must guarantee the quality of sand and gravel requirement, adjust water-cement ratio and sand moisture content according to the site, to ensure that the grouting material mixture ratio, ratio of proportioning and construction of the experiment don't mix.     At the same time, the grouting material PcHub China in Chinese is similar with the quality of grouting material in Qingdao factory and the type of seam an agent, mortar, incorporating way has a close relationship, it is also one of the important factors influencing the strength of grouting material.