Experimental Research on Mechanical Properties of Reinforced Gypsum Beams

CHONG Xun; WANG Zeen; ZHU Wangcheng; JIANG Qing; ZENG Ying; ZHANG Weidong; YE Chuansheng

doi:10.3724/j.gyjzG23091308

Volume 54 Issue 7

Jul. 2024

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2024 > 54(7): 166-173

CHONG Xun, WANG Zeen, ZHU Wangcheng, JIANG Qing, ZENG Ying, ZHANG Weidong, YE Chuansheng. Experimental Research on Mechanical Properties of Reinforced Gypsum Beams[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(7): 166-173. doi: 10.3724/j.gyjzG23091308

Citation:

CHONG Xun, WANG Zeen, ZHU Wangcheng, JIANG Qing, ZENG Ying, ZHANG Weidong, YE Chuansheng. Experimental Research on Mechanical Properties of Reinforced Gypsum Beams[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(7): 166-173. doi: 10.3724/j.gyjzG23091308

Citation:

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Experimental Research on Mechanical Properties of Reinforced Gypsum Beams

doi: 10.3724/j.gyjzG23091308

1. School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China;
2. Anhui Construction Industry Company Limited, Hefei 231604, China;
3. Anhui Shiming Environmental Protection New Material Technology Company Limited, Hefei 231299, China;
4. Anhui Research Institute of Building Science and Design, Hefei 230088, China

Received Date: 2023-09-13
Available Online: 2024-08-16

Abstract

Abstract

To investigate the mechanical properties of reinforced gypsum beams and analyze the effects of reinforcement ratio and pattern, static loading tests were conducted on seven single-reinforced gypsum beams and five double-reinforced gypsum beams. The test results indicated that both the single-reinforced specimens B1-B5 and the double-reinforced specimens B8 and B9 exhibited bending failure at normal sections as proper reinforced concrete beams, while the single-reinforced specimens B6 and B7 demonstrated bending failure as over-reinforced concrete beams. Due to the low actual strength of gypsum, the shear bearing capacity of the section was relatively low. As a result, specimens B5, B6, and B10 experienced both bending failure and shear failure, and B11 and B12 underwent shear oblique compression failure. The peak bearing capacity of the proper reinforced specimens increased with the increase of the tensile reinforcement ratio, while the displacement ductility coefficient gradually decreased. When the tensile longitudinal reinforcement remained constant, the addition of compressive longitudinal reinforcement could effectively enhance the displacement ductility of the specimens. The reinforced gypsum beam basically conformed to the assumption of a plane section. The maximum crack width and deflection observed in each specimen under service load remained below the specified limit values, indicating that the reinforced gypsum beams satisfactorily met the requirements of the serviceability limit state in Design of Concrete Structures(GB 50010—2010).
- reinforced gypsum beam,
- mechanical property,
- static loading test,
- reinforcement ratio,
- reinforcement pattern

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References(28)

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