回弹法、剪切法测砂浆强度的试验研究及测强曲线绘制

Test research on mortar strength detection with rebound method, shear method and drawing of intensity curves

通过试验研究分析了龄期对砂浆强度的影响,并将回弹法、砂浆片剪切法试验检测所得的砂浆强度试验实测值与标准试验值进行比较,得出了回弹法、砂浆片剪切法之间的关系和与标准试验值之间的差异。采用最小二乘法原理以5种函数形式分别对不同的测试方法所得的试验测试数据进行了回归计算,分别给出天津市各检测方法的砂浆测强曲线和测强计算公式,并进行了误差分析。

The impact of age on mortar strength was mainly analyzed.With the standard value as the datum,the actual values obtained by rebound method and shear method were compared with standard values.The relationship between two methods and the difference from standard value were gained.Using the principle of least squares method,five kinds of functions were adopted to regression analysis test value.Finally detecting strength curves of Tianjin and formula of calculating strength are obtained.