Triaxial compression failure criterion and constitutive relation of concrete containing multiple solid wastes

•The mechanical properties and deformation development of SCT under conventional triaxial stress were studied.•The constitutive relationship of SCT under multiaxial stress was formulated.•An improved power function expression of the Mohr-Coulomb failure criterion for SCT was proposed.•A parabola for...

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Bibliographic Details
Published inConstruction & building materials Vol. 386; p. 131573
Main Authors Bai, Yanying, Guo, Weichao, Zhao, Qingxin, Qiu, Yongxiang, Wang, Shuai
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 10.07.2023
Subjects
Carbide slag
Concrete
Constitutive relation
Soda residue
Stress–strain
Stress–strain
Concrete
Carbide slag
Constitutive relation
Soda residue
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Summary:•The mechanical properties and deformation development of SCT under conventional triaxial stress were studied.•The constitutive relationship of SCT under multiaxial stress was formulated.•An improved power function expression of the Mohr-Coulomb failure criterion for SCT was proposed.•A parabola form of the pressure meridian failure criterion equation of SCT was proposed. This study analyzed the mechanical properties and failure criterion of full-solid waste concrete (SCT) made with slag, fly ash, carbide slag, soda residue, and iron tailings aggregate. SCT showed a higher strength growth rate (25.5–57.7%) compared to natural sand and gravel as aggregate (SCN) (20.7–47.5%), but lower than cement + natural sand and gravel (PCN) (32.0–86.1%), due to the latter's susceptibility to microcracks. The study proposed a parabolic pressure meridian failure criterion equation and an improved power function formulation of the Mohr-Coulomb failure criterion for SCT. The findings suggest that SCT can be used in engineering applications.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2023.131573