RESEARCH ARTICLE


Study on Mechanical Properties and Constitutive Equation of Hybrid Fiber Reinforced Cementitious Composites Under Static Loading



Huixian Yang1, Jing Li1, 2, *, Yansheng Huang1, 2
1 School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, P.R. China
2 State Key Laboratory of Subtropical Building Science, Guangzhou 510640, P.R. China


Article Metrics

CrossRef Citations:
5
Total Statistics:

Full-Text HTML Views: 4633
Abstract HTML Views: 2205
PDF Downloads: 803
ePub Downloads: 694
Total Views/Downloads: 8335
Unique Statistics:

Full-Text HTML Views: 1898
Abstract HTML Views: 1121
PDF Downloads: 551
ePub Downloads: 464
Total Views/Downloads: 4034



Creative Commons License
© Yang et al.; Licensee Bentham Open

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, P.R. China; E-mail 278334902@qq.com


Abstract

The Quasi-static mechanical properties of hybrid fiber (steel fiber and Polyvinyl alcohol (PVA) fiber) reinforced cementitious composites (HFRCC(SP)) were investigated by compressive and tensile experiments. The compressive strength, peak strain, elastic modulus and tensile strength are studied as compared with that of engineered cementitious composite (ECC). Study results indicate that steel fibers can improve the compressive and tensile strength of HFRCC(SP) but the peak strain of HFRCC(SP) decreases. The formulas modified based on codes are proposed to calculate compressive peak strain, elastic modulus and tensile strength. The relationship between tensile strain at peak load and tensile strength of HFRCC with different volume fractions of polyethylene fiber and steel fiber were studied and the tensile stress-strain relation was presented. The parameters k1 and k2 of constitutive formulas for fiber reinforced high strength concrete presented by Mansur are modified to describe the stress-strain curve of HFRCC(SP), the modified formulas show good agreement with the experimental results.

Keywords: Cementitious composites, Constitutive equation, Experimentation investigation, Hybrid fiber, Mechanical properties, Static loading.