Size Effect of Shear Strength of Recycled Concrete Beam without Web Reinforcement: Testing and Explicit Finite Element Simulation

Wei Wang, Xin Zeng, Emery Niyonzima, Yue-Qing Gao, Qiu-Wei Yang and Shao-Qing Chen
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Wei Wang: College of Civil Engineering, Shaoxing University, Shaoxing 312000, China
Xin Zeng: College of Civil Engineering, Shaoxing University, Shaoxing 312000, China
Emery Niyonzima: College of Civil Engineering, Shaoxing University, Shaoxing 312000, China
Yue-Qing Gao: College of Civil Engineering, Shaoxing University, Shaoxing 312000, China
Qiu-Wei Yang: School of Civil and Transportation Engineering, Ningbo University of Technology, Ningbo 315211, China
Shao-Qing Chen: State Grid Sichuan Electric Power Research Institute, Chengdu 610000, China

Sustainability, 2021, vol. 13, issue 8, 1-17

Abstract: Recycled concrete is a form of low-carbon concrete with great importance. The explicit finite element method is an economical and feasible method for analyzing static concrete structures, such as those made of recycled concrete. The shear strength of regular concrete beams has size effects. In this study, a group of physical tests on the size effect of the shear strength of recycled concrete beams without web reinforcement was carried out under the condition of a constant shear span ratio. The research results show that the shear strength of the test beam generally decreases with the increase in beam section height, and a regression formula of the shear strength was obtained, which can formulate this effect. The rationale and feasibility of the explicit finite element method solving the ultimate load of concrete structures (which can derive the shear strength) were briefly demonstrated, and an explicit finite element simulation of test beams was carried out. Results showed an obvious and phenomenologically regular size effect of the shear strength of recycled concrete beams without web reinforcement, which can be simulated by the explicit finite element method. This research aims to promote the study of low-carbon recycled concrete structures to a certain extent and encourage the application of economic explicit finite element methods for the static analysis of concrete structures.

Keywords: structural engineering; static analysis; test; explicit finite element method; low-carbon; recycled concrete beam; shear strength; size effect (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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