Architecture & Civil Engineering

Dynamic Mechanical Properties of Hybrid Fiber-Reinforced Cement-Based Composites

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  • 1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, Guangdong, China; 2. State Key Laboratory of Subtropical Building Science, South China University of Tehnology, Guangzhou 510640, Guangdong, China
杨惠贤( 1984-) ,男,博士生,主要从事新型建筑材料研究. E-mail: winerxian@163.com

Received date: 2014-12-29

  Revised date: 2015-04-03

  Online published: 2015-06-03

Supported by

Supported by the Opening Fundation of the State Key Lab of Subtropical Building Science of China( 2012KB28)

Abstract

The impact compression tests of hybrid fiber ( steel and polyvinyl alcohol ( PVA) fiber) -reinforced cement- based composites ( HFRCC) of different ratios were conducted at different strain rates by using a split Hopkinson pressure bar ( SHPB) . Then, their dynamic compressive strength, peak strain and tenacity are compared. The results show that (1) HFRCC is sensitive to strain rates; (2) the peak strain increases with the PVA fiber content and the addition of steel fiber can increase the dynamic compressive strength; (3) to increase the PVA fiber content can decrease the dynamic strength increase factor; and (4) at a low strain rate and before the stress reaches up to a peak, the relative contents of two kinds of fibers have little influence on the tenacity of HFRCC. At a high strain rate, however, the steel fiber can effectively improve the tenacity of HFRCC.

Cite this article

Yang Hui-xian Huang Yan-sheng Li Jing . Dynamic Mechanical Properties of Hybrid Fiber-Reinforced Cement-Based Composites[J]. Journal of South China University of Technology(Natural Science), 2015 , 43(7) : 50 -56 . DOI: 10.3969/j.issn.1000-565X.2015.07.008

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