成都市回弹砼强度换算表地标

1、一、 成都地区大流动性泵送砼回弹测强曲线：成都地区大流动性泵送砼回弹测强曲线函数式为fccu0.00115R2.892m。曲线平均相对误差为±9.8，相对误差er为±12.3。达到“规程”规定的误差要求。“规程”规定的“地区和专用测强曲线”的允许误差为：（1） 地区测强曲线：平均相对误差±14.0 相对标准误差er±17.0（2） 专用测强曲线：平均相对误差±12.0 相对标准误差er±14.0成都地区大流动性泵送砼回弹测强曲线的建立，已于1998年1月通过市级技术鉴定。为了对结构安全更为可靠，在应用中进行5的修正，即fccu0.00

2、115R2.892m×0.95。二、 回弹测强曲线的应用：大流动性泵送砼回弹法测砼抗压强度的方法，回弹仪技术要求，碳化深度测试，仪器测试角度及测试构件表面性质（即砼浇筑表面和浇筑底面），构件砼强度推定值评定（单个构件或批量检测），均按中华人民共和国行业标准回弹法检测砼抗压强度技术规程（JGJ/T 2392）办理。只是砼强度换算值，使用大流动性泵送砼回弹测强曲线计算。为了方便应用，我们对大流动性泵送砼回弹测强曲线进行了制表，以便查用。三、 大流动性泵送砼回弹测强曲线的应用范围：大流动性泵送砼回弹测强测区强度换算表，可用于符合下列条件的砼：（1） 砼拌合物坍落度180mm，并采用泵送工艺

3、浇注的普通砼及高强砼；（2） 采用425或425R或525或525R的硅酸盐或普通硅酸盐水泥配制的砼；（3） 骨料最大粒径40的卵石及最大粒径31.5的碎石和中砂配制的砼；（4） 用高效减水剂或高效泵送剂或缓凝减水剂配制的砼；（5） 期为3090天的砼（6） 抗压强度.为3271Mpa的砼（7） 成都地区生产使用的大性流动性泵送砼；四、回弹测区砼强度换算表：平均回弹值Rm测区混凝土强度换算值（Mpa）平均碳化深度Dm()00.51.01.52.02.53.035.031.930.629.428.227.126.024.935.232.431.129.828.627.526.425.335.43

4、3.031.730.429.228.026.925.835.633.532.230.929.628.427.326.235.834.132.731.430.128.927.826.636.034.633.231.930.629.328.227.036.235.133.732.331.029.828.627.436.435.734.332.931.630.329.127.936.636.334.833.432.130.829.528.436.836.935.434.032.631.330.028.837.037.435.934.433.131.730.429.237.238.136.635.13

5、3.732.331.029.837.438.737.235.634.232.831.530.237.639.237.636.134.733.231.930.637.839.938.336.735.333.832.531.238.040.538.937.335.834.333.031.638.241.139.537.936.334.933.532.138.441.740.038.436.935.433.932.638.642.440.739.137.536.034.533.138.842.941.239.537.936.434.933.539.043.641.940.238.537.035.53

6、4.139.244.342.540.839.237.636.134.639.444.943.141.439.738.136.535.139.645.643.842.040.338.737.135.639.846.344.442.640.939.337.736.240.046.945.043.241.539.838.236.640.247.645.743.842.140.438.737.240.448.446.544.642.841.039.437.840.649.047.045.143.341.639.938.340.849.747.745.843.942.140.538.841.050.44

7、8.446.444.642.741.039.441.251.149.147.145.243.341.639.941.451.949.847.845.944.042.240.541.652.550.448.446.444.542.741.041.853.351.249.147.145.243.441.642.054.151.949.847.845.944.042.342.254.852.650.548.446.544.642.842.455.653.451.249.247.145.343.442.656.354.051.949.847.745.844.042.857.154.852.650.54

8、8.446.544.643.057.955.653.351.249.147.145.243.258.656.354.051.849.747.745.843.459.557.154.852.650.548.446.543.660.257.855.453.251.049.047.043.861.058.656.253.951.749.747.644.061.859.356.954.652.450.348.344.262.760.257.755.453.251.049.044.463.561.058.556.153.851.749.644.664.361.759.256.854.552.350.24

9、4.865.262.660.057.655.353.150.945.066.063.460.858.356.053.751.545.266.964.261.659.156.754.552.245.467.765.062.459.857.455.152.945.668.665.963.260.658.255.853.645.869.466.663.961.358.956.554.246.070.367.564.762.159.657.254.946.271.368.465.763.060.558.055.7注：（1） 本表系成都地区大流动性泵送砼回弹法测强测区强度换算表。（2） 表中测区平均回弹值范围为35.046.2时，方可查算测区砼抗压强度若Rm小于35.0时按国家统一曲线查表；若RM大于46.2时按46.2计，不得外推。（3） 表