回弹法推定普通混凝土空心砌块抗压强度研究

从3片砌体墙片中随机抽取60个砌块，研究了砌块回弹测试时的回弹仪选取以及回弹仪回弹砌块带肋与不带肋位置时的回弹值大小的差异.通过9个混凝土空心砌块砌体试件中的回弹对比试验，研究了砌块在不同约束条件、竖向压力和混凝土灌孔下的回弹值的关系.通过对砌块回弹值-抗压强度的试验数据进行对比研究和回归分析，提出了回弹法检测砌体中普通混凝土空心砌块抗压强度的一般公式.验证性试验结果显示,该公式检测精度较高，可为相关标准、规范的修订提供依据.

Research on the Evaluation of Compressive Strength for Common Concrete Hollow Brick by Rebound Method

Based on the tests of 60 blocks chosen from 3 masonry walls at random, this paper studied the differences of the rebound value for different options of resiliometers and blocks with or without ribbed position. And through 9 comparison tests of hollow concrete block masonry specimens by rebound method, this paper analyzed the relationship of rebound value of the blocks under different constraints, vertical load and concrete grouted. Based on the comparison and analysis of the experimental data, a general calculation formula of compressive strength for common concrete hollow brick in existing masonry was put forward. Confirmatory experimental results have shown the high accuracy of this formula, which can provide a basis for the revision of relevant standards.