The quality of the relationship between the quality of sand asphalt mixture. Asphalt as road base, so the asphalt mixture more stringent requirements.

Factors affecting the quality of asphalt mixture mainly affected the quality of raw materials affect the mixing and transport processes. Among the more important raw material, crude aggregate of soft stone and flaky particles will have a greater impact on the quality of the mix, fine aggregate including stone chips, artificial sand and natural sand, stone chips belong to stone crushing process The by-product, its intensity is low, generally should be used with caution, artificial sand is the best road fine aggregate, natural sand stone often is acidic, poor adhesion with the asphalt, and other fine aggregate to be used in conjunction with . So how to control the quality of sand?

Aggregate quality of technical indicators have stone crushing value, aggregate stone materials derived indicators and related processing methods and less relevant. The workability index with processing quality and machining processes. In aggregate quality control process, we should focus on controlling the processing of indicators, generally have the following factors:
1, the aggregate specifications
1) In order to reduce the production of aggregate gradation of variability, we must first set a reasonable choice material specifications.
2) a reasonable set crusher sieve.
3) Keep the balance crusher production.
2, aggregate flakiness particle content
3, aggregate clay content
4, the slag content