贯入法及冲击筛分法检测砌体抹灰砂浆强度研究

Study on strength detection of masonry plastering mortar with penetration method and impact screening method

为了解现有的砌筑砂浆强度检测方法的适应性,进行了试验研究。试验中主要采用了贯入法、冲击筛分法检测普通粘土砖砌体28 d抹灰砂浆的强度,并辅以点荷法,立方体抗压强度予以对比分析。结果表明,冲击筛分法可以用作普通粘土砖砌体28 d抹灰砂浆强度的检测,而贯入法需要进一步研究,以获得准确的抹灰砂浆强度回归曲线,方可用于现场检测。

In order to find out the adaptabilities of the existing methods for detecting the strength of masonry plastering mortar, an experimental study is made; in which the 28 d strength of the plastering mortar for the conventional masonry structure of clay bricks is detected with both the penetration method and the impact screening method along with the supplements of the point load and cubic concrete compressive strength methods for the comparative analysis concerned. The results show that the impact screening method can be used to detect the 28 d strength of the plastering mortar for the conventional masonry structure of clay bricks, however, a further study is necessary to be made on the penetration method for obtaining the accurate regression curve of the strength from the plastering mortar, only in this way, it can be used for the in-situ detection.