A Study on the Mechanical Properties of Glass-Fiber-Reinforced Defective Gypsum Boards

Di Wu, Laiwang Jing (), Shaochi Peng and Wei Jing
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Di Wu: School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China
Laiwang Jing: School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China
Shaochi Peng: School of Environment and Civil Engineering, Chengdu University of Technology, Chengdu 610059, China
Wei Jing: School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China

Sustainability, 2024, vol. 16, issue 2, 1-14

Abstract: As a waste derivative, glass fiber has drawn a lot of interest from the engineering community. The purpose of this study was to use glass fiber to improve the performance of defective gypsum boards. Single compression experiments, repeated loading experiments, and scanning electron microscopy (SEM) testing were performed on defective gypsum boards. The results showed that the addition of glass fiber can improve the compressive strength of defective gypsum boards. When the fiber concentration is 1.5%, the strength of single-hole gypsum boards increases by 77.1%. Energy evolution and residual strain evaluation after repeated loading showed the significant reinforcement of the dual-hole gypsum board samples with the addition of glass fiber, improving the stress distribution and elasticity, which was confirmed using damage factor analysis. Glass fibers reduce stress concentrations, improve integrity, and prevent brittle failure, especially at high stress levels. The microstructural analysis showed that the addition of glass fiber improves adhesion and prevents microcracking while acting as a stress transfer bridge, enhancing the behavior of the specimen under cyclic loading. Based on the experimental results and cost, 1.5% glass fiber is the optimal concentration. The research results provide new ideas for the application of glass fiber in defective and brittle materials and contribute toward the sustainable development of the construction industry.

Keywords: waste-derived material; glass fibers; porous structures; repeat loading (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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