How to control the asphalt mixture with sand quality

The quality of the relationship with the mechanism of sand asphalt mixture quality. Asphalt mixture as the pavement of asphalt mixture, so the more stringent requirements. Factors influencing the quality of asphalt mixture are the quality of raw materials, mixing process and the influence of transport process. The influence of raw material is more important, the coarse aggregate in the soft rock and flaky particles will have a greater impact on the quality of the fine aggregate mixture, including stone, artificial sand and natural sand, stone chips are by-products of stone crushing process, its strength is low, the general should be cautious the use of artificial sand road, is the most ideal of fine aggregate, sand often belong to acidic stone and asphalt, poor adhesion, and other fine aggregate with the use of. So how to control the quality of sand?

Technical indexes of aggregate quality of the material source of crushed stone aggregate index value, and stone, and the processing methods of low correlation. The processing of index and the machining quality and the machining process. In the aggregate, in the process of quality control, should control the key processing parameters were, generally have the following factors: 1, the aggregate size. 1) for the production of aggregate gradation variability reduction, we must first choose aggregate specifications. 2) a reasonable set of crusher screen. 3) maintain the equilibrium output of crusher. 2, aggregate flakiness content 3, the aggregate amount of mud 4, the content of mineral powder. On the above factors, the Shanghai world state to research and development to create the launch of UV tower type mechanism of sand production system. Updated and comprehensive upgrade based on the original dry sand system, using the tower type highly intensive closed arrangement, efficient system sand, grain, powder, gradation adjustment optimization control, moisture control, environmental protection in one, not only improves the production efficiency, to achieve a more comprehensive promotion mechanism sand type, gradation, powder quantity indicators, performance comparable to natural sand mechanism sand, sand concrete in full compliance with the standards, fully meet the market demand for high quality sand, providing high-quality manufactured sand Everfount for engineering construction projects.