Flexural Toughness of Hybrid Fiber Reinforced High-Performance Concrete under Three-Point Bending

Abstract:

A set of new hybrid fiber reinforced high-performance concrete was developed and studied by experiment. The fibers incorporated the concrete are the collection of the steel fiber, modified polypropylene fiber and polypropylene with total fiber content not more than 1%. And the compressive test, splitting tensile test and the flexural toughness test were performed on eight groups of specimens. Based on the load-deflection and load-CMOD curves and the equivalent flexural tensile strength, the effect of fiber volume fraction and hybrid mode upon concrete's mechanical properties and post-peak behavior were investigated. The test results show that the mixing of the three different fibers can increase concrete's splitting tensile strength and flexural toughness more effectively with no significantly effect on compressive strength. The mixture of the three different fibers exist the optimization problem. Based on the results of the analysis, the compatible proportion of the three fibers is 0.7% steel fiber, 0.19% modified polypropylene fiber and 0.11% polypropylene fiber.

• Periodical: Applied Mechanics and Materials (Volumes 357-360)
• Pages: 1110-1114
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.357-360.1110
• Online since: August 2013
• Authors: Dong Tao Xia, Xiang Kun Liu, Bo Ru Zhou
• Keywords: Equivalent Flexural Tensile Strength, Fiber Reinforced High-Performance Concrete, Flexural Toughness, Notched Beams

References

[1] Danying Gao and Tingyi Zhang: Journal of the Chinese Ceramic Society Vol. 35 (2007), p.1630. (In Chinese).

[2] Liangping Zhao, Danying Gao and Haitang Zhu: Journal of North Institute of Water Conservancy and Hydroelectric Power Vol. 33 (2012), p.29． (In Chinese).

[3] Chujie Jiao, Zhenfeng Zhan and Chunyuan Peng: Journal of Guangzhou University (Natural Science Edition) Vol. 6 (2007), p.70． (In Chinese).

[4] Dongtao Xia, Lihua Xu and Yin Chi: Journal of Shenyang Jianzhu University (Natural Science Edition) Vol. 1 (2007), p.77. (In Chinese).

[5] Yining Ding and Xiangjun Dong: Journal of Building Material Vol. 8 (2005), p.294．(In Chinese).

[6] Zhean Lu , You Zou and Zhigang Ren: Concrete Vol. 3 (2010), p.5．(In Chinese).

[7] China Construction Engineering Association : CECS 13: 2009 Standard Test Methods for Fiber Reinforced Concrete (China planning press, Beijing 2009).

[8] G. Giaccio J.M. Tobes and R. Zerbino: Cement ＆ Concrete Composites Vol. 30 (2008), p.297.

DOI: 10.1016/j.cemconcomp.2007.10.004

[9] Haiyan Sun, Zhen He and Aimin Gong: China Concrete and Cement Products Vol. 2 (2009), p.48. (In Chinese).

[10] Chengjiao Yang, Chengkui Hang and Yi Che: Journal of Building Materials Vol. 11 (2008), p.89. (In Chinese).

[11] Zongcai Deng, Jianhui Li and Guodong Liu: Concrete Vol. 8 (2006), p.50． (In Chinese).

[12] Jianzhong Lai, Wei Sun and Hexiang Dong: Industrial Construction Vol. 11 (2006), p.94． (In Chinese).