Mixed sand fineness modulus of concrete grouting material

Mechanism of concrete grouting material sand performance influenced by parent rock properties, processing technology and other conditions, especially fine performance is mainly influenced by mining area. As a result, different kinds of raw sand, mixed income by different proportion mixing different fineness modulus of sand. As is known to all, the fineness modulus of sand not only affects the value of sand ratio, also directly affect the concrete grouting material with sand amount and the total amount of gelled material, and the influence on the performance of the concrete technology. When a certain other conditions, mechanism of changes of fine sand and sand mixture ratio, the workability and strength of concrete grouting material are different. Mechanism of sand mixed with the different proportion of fine sand, sand fineness modulus is different, in the same proportion, the concrete xianning bearing strength of grouting grouting material change is not obvious, but larger changes mixture slump. Engineering applications, therefore, if mixing content slump under construction requirements, should be reasonable to adjust the proportion of mixed sand, should not be taken by increasing water use technical measures to meet the construction requirements, otherwise will lead to concrete water-cement ratio improve, the decrease of strength of concrete grouting material.