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本文介绍了一种可用于混凝土材料拉伸试验的摩擦型拉伸夹具。这种夹具结构简单,使用方便,应用范围广,它不会在试件内产生扭矩,弯矩和偏心矩,并可消除双向应力现象,保证试件只在纯拉状态下破坏,因此可得到稳定的抗拉强度和纯拉力下的应力-应变曲线,在同一试块上获得拉、压强度或拉、压、弯强度的相互关系.
This article describes a friction type tensile fixture that can be used for tensile testing of concrete materials. The fixture has the advantages of simple structure, convenient use and wide application range. It does not generate torque, bending moment and eccentric moment in the test piece, and can eliminate the bidirectional stress phenomenon and ensure that the test piece is only destroyed under pure pulling state, so it can be obtained. Stable tensile strength and stress-strain curve under pure tensile force can obtain the relationship between tensile and compressive strength or tensile, compressive and bending strengths on the same test block.