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

Crystals

Amin Al-Fakih¹  Baoxin Liu²  Jialiang Jin²  Xiangdong Yan²  Pei-Shan Chen²  Bashar S. Mohammed³ 

[1] College of Civil Engineering, Fuzhou University, Fuzhou 350108, China;Department of Civil and Architectural Engineering, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan;Department of Civil and Environmental Engineering, University Technology PETRONAS (U.T.P.), Bandar Seri Iskandar 32610, Malaysia;

关键词: bubble concrete;    lightweight concrete;    lightweight aggregate;    hollow body;    steel sphere;    cubic concave body;   

DOI  :  10.3390/cryst11080858

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown