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首页> 外文会议>International Seminar on Composite Materials in Concrete Construction; Sep 5-6, 2002; Scotland, UK >A NEW METHOD FOR CONTROLLING SECONDARY FLEXURE DURING UNIAXIAL TENSION TEST OF CONCRETE
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A NEW METHOD FOR CONTROLLING SECONDARY FLEXURE DURING UNIAXIAL TENSION TEST OF CONCRETE

机译：混凝土单轴拉伸试验中二次弯曲控制的新方法

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摘要

The authors have already established a test procedure for uniaxial tension test of concrete, eliminating secondary flexure, multiple cracks and overlapping cracks. In this paper, another approach for controlling secondary flexure is presented. It gives an artificial flexure to a specimen by non-equal-depth-notches and by maintaining deformation difference of opposite faces at a low constant level. The flexure control makes the whole cross section of the specimen softened, and provides an accurate tensile strength. Tension softening curves obtained are more monotonous and continuous under this condition than in the case of complete elimination of the flexure. Thus, this new control method of secondary flexure is evaluated to be superior than complete elimination of the flexure.
机译：作者已经建立了混凝土单轴拉伸试验的测试程序，消除了二次弯曲，多重裂纹和重叠裂纹。在本文中，提出了另一种控制次级弯曲的方法。它通过不等深的刻痕和通过将相对面的变形差保持在较低的恒定水平来对样品进行人工弯曲。弯曲控制使样品的整个横截面变软，并提供精确的拉伸强度。与完全消除挠曲的情况相比，在这种条件下获得的张力软化曲线更单调和连续。因此，这种新的二次弯曲控制方法被评估为优于完全消除弯曲。

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