Journal of Guangdong University of Technology ›› 2021, Vol. 38 ›› Issue (04): 103-110.doi: 10.12052/gdutxb.200105

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A Study on the Influence of Waste Stone Powder on the Control Factor of Fiber Mortar Fresh Properties

Xia Yong, Chen Jia-jian, Li Zi-hong, Ma An-min   

  1. School of Transportation, Civil Engineering and Architecture, Foshan University, Foshan 528000, China
  • Received:2020-08-17 Online:2021-07-10 Published:2021-05-25

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Abstract: The addition of waste stone powder to fibre mortar or fibre concrete can improve its mechanical property, but the fresh property would be decreased. In order to explore the governing factors of the fresh property of the polypropylene fibre mortar with the waste stone powder replacing the equal volume of the standard sand, 20 fibre mortar mixes with different water cement ratios and different volume contents of the waste stone powder are produced for flowability, cohesiveness, adhesiveness and packing density measurement. Based on the packing density results, the average liquid thickness (ALT) and average paste thickness (APT) of the fibre mortar mixes are calculated. The results showed that the ALT and APT have good correlation with the test results of flow rate, flow spread, cohesiveness and adhesiveness. According to the results of regression analysis, it is found that the ALT is the major factor governing the flow rate and adhesiveness, and the ALT and APT are the major factors governing the flow spread and cohesiveness.

Key words: waste stone powder, average liquid thickness, average paste thickness, packing density, fibre mortar

CLC Number: 

  • TU528.52
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[1] Wen Meng-dan, Chen Jia-jian, Gao Yu-shen, Ma An-min. Effect of Ground Granulated Blast Furnace Slag on Properties Based on Analysis of Water Film Thickness Hypothesis [J]. Journal of Guangdong University of Technology, 2018, 35(04): 119-126.
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