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Abstract
We have designed experiments to study the effect of gravel and sand on different labels of concrete. The result show that the compressive strength can be improved by increasing the proportion of mortar in low-grade concrete and increasing the proportion of stone in high-grade concrete. Tests showed that the powder of gravel and sand can significantly improve the mixing performance of concrete. The correlation of performance indicators with the strength of fresh concrete was also analyzed. The results in this research have important guiding significance for the design of concrete mix ratio and the application of powder in concrete.
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Details
1 College of Civil Engineering, Guizhou University, Guiyang, Guizhou, 550006, China.
2 China Construction Forth Engineering Division Corp.Ltd., Guanzhou, Guandong, 510000, China.
3 Guizhou Construction Science Research & Design Institute Limited Company of CSCEC, Guiyang, Guizhou, 550006, China.
4 Guizhou Ultrafine Powder Technology Co.Ltd, Guiyang, Guizhou, 550006, China