Paper Title:
Study on Toughening Cement-Based Composites with CaCO3 Whisker and Fiber
  Abstract

Low tensile strength and high brittleness are the inherent defects of cement-based composites. So improving the toughness effectively is an urgent need for developing high-performance cement materials. The aim of this study is to study the toughening effect by mixing CaCO3 whiskers and polypropylene fibers in cement mortar. The results showed that CaCO3 whiskers could increase the split tensile strength of cement mortar of 28d age by 26.2% at maximum with the whisker content of 10wt.%; when CaCO3 whiskers content was 10wt.% and polypropylene fibers content was 0.20vol.%, the split tensile strength of cement mortar was increased by 21.1% at 28d age; when the fiber length was 19mm, the composite toughening effect of whiskers and fibers was more effective. The toughening mechanisms of CaCO3 whiskers and polypropylene fibers in cement mortar were also discussed.

  Info
Periodical
Advanced Materials Research (Volumes 287-290)
Chapter
Building Materials
Edited by
Jinglong Bu, Pengcheng Wang, Liqun Ai, Xiaoming Sang, Yungang Li
Pages
1149-1154
DOI
10.4028/www.scientific.net/AMR.287-290.1149
Citation
M. L. Cao, H. Yao, "Study on Toughening Cement-Based Composites with CaCO3 Whisker and Fiber", Advanced Materials Research, Vols. 287-290, pp. 1149-1154, 2011
Online since
July 2011
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Price
$32.00
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