Equation for the Degradation of Uniaxial Compression Stress of Concrete due to Freeze-Thaw Damage. (18th December 2019)

• Record Type: Journal Article
• Authors: Yang, Xiaolin; Wang, Genhui; Gao, Shiwu; Song, Min; Wang, Anqi
• Other Names: Hariri-Ardebili Mohammad A. Academic Editor.
• Is Part Of: Advances in materials science and engineering. Volume 2019(2019)
• Publication Date: 2019-12-18
• Subjects: Materials science -- Periodicals; Materials science; Periodicals; 620.11
• DOI: 10.1155/2019/8603065
• Languages: English
• ISSNs: 1687-8434

Abstract

Abstract : To study the freeze-thaw damage characteristics of concrete, the uniaxial compressive tests of concrete under different number of freeze-thaw cycles were conducted, and the damage variable of freeze-thaw was obtained. The test results showed that the stress was a function of strain and freeze-thaw damage variable, and it can describe the degradation of concrete strength. Meanwhile, the equation for the stress-strain curved surface about strain and freeze-thaw damage variable was also proposed in this paper. The derivative function of the stress-strain curved surface equation with respect to strain presented the change of elastic modulus with the increase of freeze-thaw cycle number. Equation proposed in this paper can be used for predicting the concrete lifetime effectively in cold and large temperature difference regions.