Study on the Flexural Property of PVA-High Toughness Cementitious Composites

Abstract:

For the compressive strength of the normal concrete is high and the tensile strength is low, it is typically brittle material. The ultimate tensile elongation of it is insufficiently 1/1000. Zhongwei Wu, an academician of Chinese Academy of Engineering pointed out that compounding cementitious composites was the way to make it high-performance, and fiber reinforced was the key^[1]. Polyvinyl Alcohol Engineered Cementitious Composites has super flexural performance^[2] and stretching ability^[3],and its ultimate deflection is approximately 40 times larger than that of normal concrete when bended, similar to the multiple cracking and super toughness of uniaxial tensile test, it shows significant bending hardening behavior in the process of the test. This paper studied its flexural property by four point bending test .

• Periodical: Advanced Materials Research (Volumes 250-253)
• Pages: 765-768
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.250-253.765
• Online since: May 2011
• Authors: Wen Ling Tian, Lei Xu, Xiao Wei Wang
• Keywords: Bending Toughness Index, Four Point Bending Test, PVA Fiber

References

[1] Zhongwei Wu. The Future of Fiber reinforced Cementitious Composites[J]. China Concrete and Cement Products. 1999(1):5-6. In Chinese.

[2] Shuxin Wang, Victor C Li. Polyvinyl Alcohol Fiber Reinforced Engineered Cementitious Composites .Material Design and Performances, 2003.

[3] Victor C Li .Engineered Cementitious Composites. 2005.

[4] Shuxin Wang, Victor C Li. Engineered Cementitious Composites with High Volume Fly Ash [J]. ACI Materials J ,2007,104(3):233-241.

DOI: 10.14359/18668

[5] Guoqing Jiang. Special High Property Cement Matrix Composites, Key Technology and Mechanical Behavior Research [J]. Architectural technology, 2007,38(3):28-30. In Chinese.