Scale effect of cement mortar specimens subjected to high temperatures using uniaxial compressive and splitting tensile tests

• Autorzy: Xiong L. X. , Zhang X. J. , Xu Z. Y. , Geng D. X.

Identyfikatory

DOI

10.24425/ace.2020.134389

• Języki publikacji: EN

Abstrakty

EN

In this study, cubic and cylindrical cement mortar specimens were first subjected to high temperatures, then the cubic and cylindrical specimens were taken out and conducted with uniaxial compressive test and splitting tensile test, respectively. The effect of the length to side ratio on the uniaxial compressive properties and the effect of thickness-to-diameter ratio on the splitting tensile properties of cement mortar specimens after high temperature were studied. Test results show that: (1) With temperature increasing from 25 ºC (room temperature) to 400 ºC, the compressive strength and elastic modulus of cubic specimens with three kinds of side lengths decrease; the decreasing rates of compressive strength and elastic modulus of cubic specimen with side length of 70.7 mm is higher than those of cubic specimens with side length of 100 mm and 150 mm, and the strain at the peak stress of cubic specimens with three kinds of side lengths increase. (2) After the same temperature, the tensile strength of cylindrical specimen decreases with the thickness-to-diameter ratio increasing from 0.5 to 1.0. The decreasing rate of tensile strength of cylindrical specimen with thickness-to-diameter ratio is highest when the temperature is 25 ºC (room temperature), followed by that after the temperature of 200 ºC, and that after the temperature of 400 ºC is the lowest.

Słowa kluczowe

EN

cement mortar; high temperature; uniaxial compression; splitting tensile; scale effect

PL

zaprawa cementowa; temperatura wysoka; ściskanie jednoosiowe; rozciąganie przy rozłupywaniu; efekt skali

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2020
• Tom: Vol. 66, nr 3
• Strony: 139--155
• Opis fizyczny: Bibliogr. 15 poz., il., tab.

Twórcy

autor

Xiong L. X.

• School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, China
• Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University, Nanning, China

autor

Zhang X. J.

• China Building Materials Southwest Survey & Design Co., Ltd., Chengdu, China

autor

Xu Z. Y.

• Department of Earth Sciences, University of Delaware, United States

autor

Geng D. X.

• School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, China

Bibliografia

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