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本文通过专用装置对混凝土结构构件钻制的圆柱体小芯样进行原位剪切试验,以及相应龄期的标准立方体试件力学性能试验,分别获得了小芯样原位剪切强度和混凝土立方体试件抗压强度。研究结果表明:小芯样原位剪切强度与混凝土立方体试件抗压强度存在显著的相关性;试验所建立的原位单剪法测强曲线具有足够的检测精度,能够应用于现场实体混凝土抗压强度的检测。最后对抗剪法与原位单剪法的区别与联系加以比较。研究结果可供工程质量检测与控制参考。
In this paper, the in-situ shear tests on small-sized cylindrical samples of concrete structural members and the tests on the mechanical properties of standard cubic specimens of corresponding ages were carried out by special devices. The in-situ shear strengths of small cores and concrete cubes Specimen compressive strength. The results show that there is a significant correlation between the in-situ shear strength of small core samples and the compressive strength of concrete cubes specimens. The strength curve of in situ single shear test established by the test has sufficient detection accuracy and can be applied to on-site concrete Compressive strength of the test. Finally, the difference between shear method and in-situ shear method is compared. The results are available for project quality inspection and control reference.