A statistical model of size effect on concrete tensile and compressive strength

Wang Zhibin; Yang Liyun; Qian Guian; Li Qintao; Xu Huidong

doi:10.19606/j.cnki.jmst.2022.02.006

Volume 7 Issue 2

Apr. 2022

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Article Navigation > Journal of Mining Science and Technology > 2022 > 7(2): 193-199

Wang Zhibin, Yang Liyun, Qian Guian, Li Qintao, Xu Huidong. A statistical model of size effect on concrete tensile and compressive strength[J]. Journal of Mining Science and Technology, 2022, 7(2): 193-199. doi: 10.19606/j.cnki.jmst.2022.02.006

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A statistical model of size effect on concrete tensile and compressive strength

doi: 10.19606/j.cnki.jmst.2022.02.006

1.
School of Mechanics and Civil Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
2.
State key laboratory of Nonlinear Mechanics, Institute of mechanics, Chinese Academy of Sciences, Beijing 100190, China
3.
China National Gold Group Co., Ltd.Laizhou Huijin Mine Investment Co., Ltd, Laizhou Shandong 261400, China
4.
China Coal Mine Construction Group Co., Ltd., Hefei Anhui 230000, China

Received Date: 2021-04-14
Rev Recd Date: 2021-05-05
Publish Date: 2022-04-20

Abstract

Abstract

In order to study the relationship between the tensile and compressive strength of the concrete commonly used in engineering and the size of specimen, a statistical model of the size effect on concrete strength was established based on the generalized weakest chain formula proposed by Lei recently, assuming that the distribution of the internal defects in concrete follows the uniform distribution or the Poisson distribution. It realizes the prediction of the strength of small-scale concrete specimens to the strength of full-scale members under the condition of a given failure probability. The analysis of concrete strength data from the three published cases shows that: Under the assumption of uniform distribution of defects, the statistical method of size effect can well reflect the relationship between the tensile strength and size of ordinary concrete and RPC.The internal defect distribution of RPC concrete is closer to a uniform distribution, and the relationship between its compressive strength and size can also be described by the statistical method of size effect.
- concrete,
- tensile strength,
- compressive strength,
- statistical method,
- size effect

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A statistical model of size effect on concrete tensile and compressive strength

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