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BULLETIN OF THE CHINESE CERAMIC SOCIETY ›› 2021, Vol. 40 ›› Issue (4): 1205-1212.

• Cement and Concrete • Previous Articles     Next Articles

Influence of Manufactured Sand-Stone Chips Composite Fine Aggregate on Properties of Different Strength Grade Concrete

TONG Xiaogen, ZHANG Kaifeng, MENG Gang, LUO Zuoqiu, HU Yubo, WANG Jiamin, WANG Bo, WANG Guofeng   

  1. China West Construction North Co., Ltd., Xi’an 710065, China
  • Received:2020-12-11 Revised:2021-02-19 Online:2021-04-15 Published:2021-05-11

Abstract: In order to make rational use of the composite sand composed of manufactured sand and stone chips to alleviate the deficiency of natural river sand, the optimal matching ratio between them was determined quickly by using the method of grade-combination calculation, so as to obtain the composite sand that meets the technical requirements of sand in area II of the national standard. Then, the effects of composite sand with different compound ratio on the workability, mechanical properties and durability of C30 to C50 strength grade concrete were studied respectively. The results show that, different combination ratio of composite sand improve the performance of concrete to different degrees. When the ratio of manufactured sand to stone chips is 6∶4 (mass ratio), the comprehensive performance of each strength grade concrete is the best.

Key words: manufactured sand, stone chip, workability, mechanical property, durability, economy

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