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Article

Experiments and Mechanical Simulation on Bubble Concrete: Studies on the Effects of Shape and Position of Hollow Bodies Mixed in Concrete

1
Department of Civil and Architectural Engineering, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan
2
College of Civil Engineering, Fuzhou University, Fuzhou 350108, China
3
Department of Civil and Environmental Engineering, University Technology PETRONAS (U.T.P.), Bandar Seri Iskandar 32610, Malaysia
*
Author to whom correspondence should be addressed.
Academic Editors: Yang Yu, Weiqiang Wang, Rafael Shehu and Beatrice Pomaro
Crystals 2021, 11(8), 858; https://doi.org/10.3390/cryst11080858
Received: 28 June 2021 / Revised: 16 July 2021 / Accepted: 20 July 2021 / Published: 23 July 2021
This paper proposes a new type of lightweight concrete called bubble concrete, which was developed by mixing concrete with high-strength hollow bodies. In the present study, concave and spherical steel hollow bodies were used not only to form multiple cavities in the concrete but also to transfer internal stresses. Through compression tests, the shape effects and distribution effects of the hollow bodies on the strength and Young’s modulus of concrete were investigated. In addition, the mechanical characteristics of the bubble concrete were simulated by nonlinear elastoplastic finite element analysis to study the stress distribution and failure mechanism. The results indicate that with the proper combination, bubble concrete can reduce its density to 1.971–2.003 g/cm3 (83.3–84.7%, compared to control concrete) and its strength reaches 27.536–28.954 N/mm2. View Full-Text
Keywords: bubble concrete; lightweight concrete; lightweight aggregate; hollow body; steel sphere; cubic concave body; elastoplastic analysis; mechanical simulation; failure mechanism bubble concrete; lightweight concrete; lightweight aggregate; hollow body; steel sphere; cubic concave body; elastoplastic analysis; mechanical simulation; failure mechanism
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MDPI and ACS Style

Yan, X.; Chen, P.-S.; Al-Fakih, A.; Liu, B.; Mohammed, B.S.; Jin, J. Experiments and Mechanical Simulation on Bubble Concrete: Studies on the Effects of Shape and Position of Hollow Bodies Mixed in Concrete. Crystals 2021, 11, 858. https://doi.org/10.3390/cryst11080858

AMA Style

Yan X, Chen P-S, Al-Fakih A, Liu B, Mohammed BS, Jin J. Experiments and Mechanical Simulation on Bubble Concrete: Studies on the Effects of Shape and Position of Hollow Bodies Mixed in Concrete. Crystals. 2021; 11(8):858. https://doi.org/10.3390/cryst11080858

Chicago/Turabian Style

Yan, Xiangdong, Pei-Shan Chen, Amin Al-Fakih, Baoxin Liu, Bashar S. Mohammed, and Jialiang Jin. 2021. "Experiments and Mechanical Simulation on Bubble Concrete: Studies on the Effects of Shape and Position of Hollow Bodies Mixed in Concrete" Crystals 11, no. 8: 858. https://doi.org/10.3390/cryst11080858

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