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Study on the composition of superfine gradation in stone powder and its influence on the compactness of concrete and the function of stone powder in the interface between aggregate and cement.As a professional large-scale sand washing machine manufacturers, need to pay close attention to changes in the market, grasp the market trend, good at capturing the potential demand of customers, the product to achieve the customer's mind, to get the trust of customers, to win customers! Vico sand washing machinery is the most understand your needs, Vico's new sand washing equipment of all the products are from the user needs to make the point. So, sand washing machine manufacturers Vico heavy launched powder sand washing machine is most suitable for your needs. Your needs are our mission, every improvement of our products, every little progress comes from the timely feedback and support from the front line of production.
We explore the use of a small percentage of the powder instead of fly ash concrete, found that the 28 days strength is 10% higher than the control group 15%; some production enterprises have also done a similar experiment, and instead of a high proportion of the concrete to reduce water consumption, improve the workability, improve the liquidity and reduce bleeding. There are people doing electron microscopic analysis of artificial sand and natural sand, artificial sand and lime stone observed cement hydration gel closely, no cracks at the interface, almost no boundaries between the two, but the natural sand and cement hydration interface cracks, some width up to 1 a 2 micron. Therefore, it is very important to systematically study the effect and influence of artificial sand on concrete and to study its mechanism.
From the current situation reflected in the analysis, artificial sand there are still many problems to be studied deeply, in order to better play the advantages of artificial sand, overcome shortcomings, improve the quality of concrete, reduce costs. For example: why, under normal circumstances, the use of artificial sand than the natural sand, water, ash ratio of 0.05 amplification, the preparation of concrete strength not only does not drop, but also improved.
