回弹法检测构件底面混凝土抗压强度曲线研究

Study on Concrete Compressive Strength Curve of Member Bottom Surface Detected by Rebound Method

回弹法检测构件底面混凝土抗压强度时,如通过角度修正和浇筑面修正存在一定的误差。为验证底面回弹值、底板芯样强度值、同条件试块及侧面芯样强度值的关系,进行了试验。通过试验建立了构件底面混凝土抗压强度曲线,提高了检测精度。

When concrete compressive strength of member bottom surface is detected by rebound method, some errors will be generated by angle correction method and pouring surface correction. Some tests are done to verify the relation of rebound value of bottom surface, compressive strength value of core sample of bottom surface, compressive strength value of same condition test sample and compressive strength value of lateral core sample. Compressive strength curve of member bottom surface is built up by test, and the detecting precision is improved.