Experimental study on shear mechanical properties of cement mortar specimen with through-step joints under direct shear

IF 1.1 Q3 ENGINEERING, CIVIL

Archives of Civil Engineering Pub Date : 2023-11-06 DOI:10.24425/ace.2022.143025

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引用次数: 0

Abstract

: In this study, direct shear tests were carried out on cement mortar specimens with single-ladder, single-rectangular, and double-rectangular step joints. Consequently, the shear strength, and crack shape of specimens with these through-step joints were analyzed, for understanding the inﬂuence ofthethrough-stepjoint’sshapeonthedirectshearmechanicalproperties.Theresultsoftheinvestigation areasfollows:(1)Underthesamenormalstress,anyincreasesintheheight ℎ of the step joint causes an initial-increase-decrease in the shear strengths of specimens with single-ladder and double-rectangular step joints, causing a type-W variation pattern for the specimens with single-rectangular step joint. More essentially, when normal stress and ℎ are constant, the shear strength of specimens with a single-ladder step joint is the greatest, followed by specimens with a double-rectangular step joint, and then specimens with a single-rectangular step joint is the least. (2) Furthermore, given a small ℎ and low normal stress, specimen with a single-ladder step joint mainly experiences shear failure, whereas specimens with single-rectangular and double-rectangular step joints mainly generate extrusion milling in the step joints.

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直剪贯通缝水泥砂浆试件抗剪力学性能试验研究

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来源期刊

Archives of Civil Engineering ENGINEERING, CIVIL-

CiteScore

1.50

自引率

28.60%

发文量

审稿时长

24 weeks

期刊介绍： ARCHIVES OF CIVIL ENGINEERING publish original papers of the theoretical, experimental, numerical and practical nature in the fields of structural mechanics, soil mechanics and foundations engineering, concrete, metal, timber and composite polymer structures, hydrotechnical structures, roads, railways and bridges, building services, building physics, management in construction, production of construction materials, construction of civil engineering structures, education of civil engineers.