The effect of the grouting material? - related with temperature The grouting material category

grouting grouting material price grouting materials manufacturer concrete grouting materials laboratory test is usually conducted in a controlled temperature, and the temperature stays the same. Early concrete grouting material laboratory test temperature control at 18 21 ℃ range, accordingly get most of the fresh concrete grouting and hardening of concrete grouting material performance is in the temperature range. But in fact, the mixing of concrete grouting material and use are conducted in a large temperature range, rather than a fixed in a temperature. In fact, with some modern buildings built in tropical regions and countries, the temperature range of concrete grouting material application in significantly increased. Recently, the application of concrete grouting material in cold region has a development.     Therefore, understanding temperature effect of concrete grouting material is very important, fresh concrete grouting material and hardening temperature effect of concrete grouting material. First, discuss the fresh concrete grouting material temperature influence on strength, followed by a review after pouring of concrete grouting material temperature processing, including atmospheric pressure steam curing and high pressure steam curing. Second, discuss the concrete grouting material caused by cement hydration heat temperature rise and the effects of, then consider the hot weather and cold weather grouting material under the condition of concrete pouring. Finally, the discussion of hardened concrete grouting material thermal properties, as well as the high and low temperature affect the performance of concrete grouting material, including fire effect on the properties of concrete grouting material.     We always thought that curing temperature accelerates the hydration of chemical reaction, grouting material beneficial influence early strength of concrete, and no adverse effect to the late strength strength of grouting material. The cement and water in the process of the initial contact was followed by a period of time, the higher the temperature of the grouting material to chengdu in sichuan province manufacturer price induction period shorten, resulting in the overall structure of the hardened cement paste have long form.     If the concrete grouting material during pouring and solidification temperature is higher, although is to improve the early strength of concrete grouting material, but may be harmful to the strength of the 7 d after. The reason for this is that the initial rapid hydration reaction seems to be poor to form the physical structure of hydration products, mostly porous structure, so that most of the pore still has not been filled. By call principles of hole wall can be concluded that the decrease of strength of porous structure will lead to. Pore structure of less hydration slower, but the slurry will eventually reach a higher adhesive than empty.     The early high temperature for the explanation of an adverse effect on the late strength is not the spoon in the institute has confirmed that they think the initial hydration reaction rate under high temperature to speed up the hindered the hydration reaction of follow-up, and the body cannot produce become uneven distribution of hydration products. The reason is that in the case of the initial hydration rate is higher, has left the hydration products of cement particles could spread, also do not have enough time in the internal space of homogeneous precipitation. Therefore, is the hydration of cement particles gathered around the high levels of hydration products, hinder the subsequent hydration reaction, and harmful to the long-term strength. ​