RESEARCH ARTICLE


Basic Mechanical Properties of Basalt Fiber Reinforced Recycled Aggregate Concrete



Huaxin Liu*, Jianwei Yang, Xiangqing Kong, Xuxu Xue
School of Civil Engineering and Architecture College of Liaoning University of Technology, Jinzhou, Liaoning 121001, People’s Republic of China


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Creative Commons License
© Liu 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 Architecture College of Liaoning University of Technology, Jinzhou, Liaoning 121001, People’s Republic of China; Tel: +86 13940609206; E-mail: lgliuhuaxin@163.com


Abstract

In order to study the basic mechanical properties of basalt fiber reinforced recycled aggregate concrete, the concrete mix ratio, the length and the volume mixing ratio of chopped basalt fiber yarn are designed for changing factors. A total of 324 specimens have been completed for this investigation. The compressive strength, splitting tensile strength, elastic modulus and axial compressive strength of basalt fiber recycled concrete have carried on the experimental study and theoretical analysis as 81 specimens, respectively. In all specimens, coarse aggregate were replaced by recycled aggregate with a replacement rate of 100%. Experimental results show that the failure process and failure pattern of basalt fiber recycled concrete and ordinary concrete are similar; With the improvement of concrete strength grade; When the volume mixing ratio of chopped basalt fiber yarn is 0.2%, the mechanic performance can effectively improve, and the length of chopped basalt fiber has less effect on the mechanical indexes; The conversion relation between common concrete mechanics index is no longer suitable for basalt fiber recycled concrete, new conversion formulas for basalt fiber recycled concrete between the mechanics index were presented through fitting experimental data.

Keywords: Basalt fiber, Compressive strength, Elastic modulus, Recycled aggregate concrete, Splitting tensile strength.