The importance of building stone gravel for concrete grouting material engineering - Prestressed pipe pressure slurry

Prestressed pipe pressure slurry prestressed pipe pressure prestressed pipe pressure slurry paste manufacturer price building sand is an important part of the prestressed concrete pipe pressure slurry engineering, as a kind of local material, it has the characteristics of non-renewable and unfavorable long-distance transportation. In some areas appear natural sand resources to reduce the current our country, even the dry condition, the prestressed concrete pipe pressure slurry sand with the obvious contradiction between supply and demand. As people the gradually in-depth understanding of the artificial sand, and further improve the quality of artificial sand, artificial sand concrete share will gradually increase. Different standards in China are stipulated in the strength grade of concrete prestressed pipe pressure artificial sand pulp price advanced technology of stone powder content, but the rules of what are the different stone powder content highest? Xi 'an micro expansion prestressed pipe pressure slurry in different places in our country standard mechanism of concrete sand powder content is the highest limit standard type name on the maximum limit of national standard building sand stone powder content 3% 7% of common prestressed concrete pipe pressure slurry with industry standard sand, stone quality and inspection method standard 5% 10% of guizhou local standard sand hill of prestressed concrete pipe pressure slurry specification 20% chongqing local standard mechanism of prestressed concrete pipe pressure slurry with 7% limestone sand quality standards and control method is qualitative, sandstone 10% can be seen from the above table, different changzhou prestressed pipe pressure vary widely according to the standard size of stone powder content. As normal mechanism in the process of sand production will produce about 10% of stone powder, limiting means increasing the production cost of artificial sand stone powder content, but also affect the use of artificial sand. System research, therefore, high stone powder content on the prestressed concrete pipe pressure slurry mixture performance, compressive strength and permeability resistance, the influence of studying the suitable content of stone powder in artificial sand, to guide the artificial sand concrete scientific application of the prestressed pipe pressure slurry, reduce artificial sand production cost, is of great significance to promote sustained development of sand and gravel resources class. Analysis of different stone powder content is 5% 30% of artificial sand in commercial concrete prestressed pipe pressure slurry preparation of mixture performance, mechanical performance and permeability resistance relations, the influence of the artificial sand concrete prestressed pipe pressure slurry suitable stone powder content, for the application of artificial sand high stone powder content to provide technical basis.