Experimental Study to Determine the Failure Criteria of Concrete at Its Early-Age

Advances in Materials Science and Engineering

Research Article

Puyang Zhang¹  Lei Zhang²  Hongyan Ding¹ 

[1] State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China, tju.edu.cn;Key Laboratory of Coast Civil Structure Safety (Tianjin University), Ministry of Education, Tianjin 300072, China, ;School of Civil Engineering, Tianjin University, Tianjin 300072, China, tju.edu.cn;School of Civil Engineering, Tianjin University, Tianjin 300072, China, tju.edu.cn

Others  :  1261172
DOI  :  10.1155/2015/423065

 received in 2015-07-15, accepted in 2015-11-01,  发布年份 2015

【 摘 要 】

The failure criteria and the constitutive relation of materials for an early-age concrete are the most common reasons to conduct the nonlinear analysis and to assess the concrete structures during the construction stage. The delay of theoretical advancement in this field resulted into a mismatch between the rough theories and the advanced algorithms, which were adopted for the estimation and analysis of early-age concrete structures. It is often impossible to find an appropriate way to determine the failure criteria and its constitutive relation that may serve as a baseline. As a consequence, the development and the application of advanced techniques of construction, for example, early dismantling construction technique of formwork, have severely been restrained. Therefore, the study of the failure criteria and its constitutive relation of concrete materials at early-age are important. In this paper, the cubic compressive strength, the prismatic compressive strength, and the axial tensile strength are determined by carrying out a strength test on C20 concrete material at an early-age. Next, the failure criteria of C20 early-age concrete material in the octahedral stress space have been studied and analyzed by using the regression analysis and by deriving the mathematical relation.

【 授权许可】

CC BY   
Copyright © 2015 Hongyan Ding et al. 2015

【 图 表 】

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