Ground granulated slag inhibiting alkali - Grouting material - aggregate reaction Winter antifreeze type grouting material

Filling aggregate grouting material fluidity grouting material construction method of alkali - Aggregate reaction is to aggregate the active silicon oxide and grouting materials in the alkali react to generate water product, volume increase, lead to the expansion of the grouting cement grouting material testing standard and cracking, leading to loss of strength, modulus of elasticity and durability. At home and abroad practice shows that when in the grouting material mixed with slag, slag of grouting material of alkali - Aggregate reaction is favorable. Mixed ground granulated slag is inhibition of grouting material base - One of the effective measures of aggregate reaction. Ground granulated slag inhibiting alkali - Aggregate reaction: on the one hand, these minerals and beautiful seam an agent added to reduce the alkali content in the unit grouting material; On the other hand, due to its filling effect, further improve the compactness of grouting material and water permeability, in the fine grinding slag grouting material, due to the lower permeability, the activity of alkaline ion drops greatly, it stop alkali - The important factors of aggregate reaction. Inhibition effect and ground granulated slag to replace Portland cement quantity and the fineness of slag. When in actual use, should according to the discretion of the alkali content of cement, find out the inhibition of alkali - Best replace quantities of fine grinding slag aggregate reaction. Foreign research data show that is 1 if the alkali content of cement. 0% ~ 1. 2%, inhibiting alkali - Aggregate reaction effectively replace the amount of 50%; When the alkali content of cement is 0. Less than 8%, inhibiting alkali - Aggregate reaction effectively replace the amount of 40%. In the calculation of total alkaline grouting material grouting material technical clarificaiton, effective alkali slag with one quantity is calculated according to 50% of its total alkali content. Above all, ore mill is a very effective performance of the grouting, mineral admixtures mixed grinding fine ores, can reduce the cost of grouting material, at the same time significantly improve the strength of grouting material late, construction performance, greatly improving the durability of grouting material and grouting material hydration heat, inhibit alkali - Aggregate reaction, so, in the grouting material mixed with grinding fine ores can formulate the low-cost high-performance grouting material. The application of mineral powder, change in the past only with fly ash as the main situation of admixture. For commodity grouting material mixing station, this ore powder bring great convenience to our compound grouting material, along with the cement grouting material ore prices with the deepening of the research and application, the quality of grouting material will gradually improve. Type at the same time, the application of the can overcome when mixing fly ash replacing cement only a limited amount of weakness, can further reduce the dosage of cement, not only can improve the durability of grouting material, at the same time reduce the grouting material cost, save energy and improve the environment.