Compression and workability behavior of chopped glass fiber reinforced concrete

Tibebu, Anteneh; Mekonnen, Eyob; Kumar, Leevesh; Chimdi, Jifara; Hailu, Hunde; Fikadu, Natif

doi:10.1016/j.matpr.2022.02.427

Cited by 16 publications

(5 citation statements)

References 6 publications

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“…The tensile strength is calculated according to the empirical formula, whereas the internal stress state of the specimen is more complicated; the error of the measured tensile strength is larger, and the ultimate tensile strain and the tensile stress–strain curve of concrete cannot be measured 12 . The axial tensile test is the most suitable method to test the tensile strength of concrete 13 . Several scholars have performed experiments in this regard.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the axial tensile properties of polypropylene fiber reinforced concrete

Zhang,

Yin,

Chen

et al. 2023

Sci Rep

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In order to study the axial tensile properties of polypropylene fiber reinforced concrete, an axial tensile test device for concrete is developed in this paper. The device is composed of three parts: rigid frame, spherical hinge and puller, and specimen fabrication part. The test device can accurately measure the tensile strength and peak tensile strain of concrete, and perfectly solves the eccentricity problem of concrete specimens under tension. It can measure the post peak segment tensile strain, such that the whole process tensile stress–strain curve can be obtained. The axial tensile test of polypropylene fiber concrete was carried out using the above test device, and the results show that the tensile strength of concrete can be clearly improved by adding polypropylene fiber, which makes the tensile failure of concrete show certain plastic characteristics. The test results show that with the increase in fiber content, the tensile strength of concrete increases first and then decreases. The effects of polypropylene fiber content and curing age on the tensile properties of concrete were studied and the optimum polypropylene fiber content was determined. When the fiber content is 0.9 kg/m3, the tensile strength of concrete reaches the maximum value. The splitting tensile test of concrete under the same condition was carried out simultaneously. The damage phenomenon and test results of the axial tensile test and splitting tensile test of concrete were compared and analyzed, and the applicability of the new developed device in the concrete axial tensile test was verified.

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Section: Introductionmentioning

confidence: 99%

Experimental study on the axial tensile properties of polypropylene fiber reinforced concrete

Zhang,

Yin,

Chen

et al. 2023

Sci Rep

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show abstract

“…In most cases, the splitting tensile strength of concrete is improved. A. Tibebu [44] investigated the use of chopped alkali-free glass fibers to reinforce C-25-strength concrete with the goal of reducing cracks and improving durability. The results showed that a 0.10% glass fiber content increased the strength.…”

Section: Introductionmentioning

confidence: 99%

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

Wu,

Jing,

Peng

et al. 2024

Sustainability

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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.

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“…Among the various fibers, glass fibers have been widely used in traditional fiberreinforced concrete [29][30][31] and also tried in 3D-CPT [18,27,32]. However, there is still a lack of systematic and in-depth research on how glass fibers would affect the printability and mechanical properties of 3D printable cementitious materials.…”

Section: Introductionmentioning

confidence: 99%

Adding Glass Fibers to 3D Printable Mortar: Effects on Printability and Material Anisotropy

Li,

Xiao,

Cheng

et al. 2023

Buildings

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Adding fibers is an effective way to enhance the printability and mechanical performance of 3D printable cementitious materials. Glass fibers are commonly used owing to their sound mechanical properties, high durability and affordable price. However, there is still a lack of systematic and in-depth research on the effects of adding glass fibers to cementitious materials. In this study, a series of 3D printable mortars with varying glass fiber content and water/cement (W/C) ratio were produced to evaluate their printability, flexural strength and compressive strength. The results showed that decreasing the W/C ratio generally has positive effects on printability and mechanical performance, whereas increasing the glass fiber content from 0% to 1% would substantially improve the extrudability, dimensional stability and buildability; increase the flexural strength by up to 82%; but decrease the compressive strength by up to 35%. Such large differences in the effects of glass fibers on the flexural and compressive strengths indicate significant material anisotropy. In fact, comparison of the strength results of printed specimens to those of un-printed specimens reveals that the printing process could increase the flexural strength by 98% but decrease the compressive strength by 47%.

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Compression and workability behavior of chopped glass fiber reinforced concrete

Cited by 16 publications

References 6 publications

Experimental study on the axial tensile properties of polypropylene fiber reinforced concrete

Experimental study on the axial tensile properties of polypropylene fiber reinforced concrete

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

Adding Glass Fibers to 3D Printable Mortar: Effects on Printability and Material Anisotropy

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