砼強度換算表(地標)

1、一、 成都地區(qū)大流動性泵送砼回彈測強曲線：成都地區(qū)大流動性泵送砼回彈測強曲線函數(shù)式為fccu0.00115R2.892m。曲線平均相對誤差為±9.8，相對誤差er為±12.3。達到“規(guī)程”規(guī)定的誤差要求?！耙?guī)程”規(guī)定的“地區(qū)和專用測強曲線”的允許誤差為：（1） 地區(qū)測強曲線：平均相對誤差±14.0 相對標準誤差er±17.0（2） 專用測強曲線：平均相對誤差±12.0 相對標準誤差er±14.0成都地區(qū)大流動性泵送砼回彈測強曲線的建立，已于1998年1月通過市級技術(shù)鑒定。為了對結(jié)構(gòu)安全更為可靠，在應用中進行5的修正，即fccu0.00

2、115R2.892m×0.95。二、 回彈測強曲線的應用：大流動性泵送砼回彈法測砼抗壓強度的方法，回彈儀技術(shù)要求，碳化深度測試，儀器測試角度及測試構(gòu)件表面性質(zhì)（即砼澆筑表面和澆筑底面），構(gòu)件砼強度推定值評定（單個構(gòu)件或批量檢測），均按中華人民共和國行業(yè)標準回彈法檢測砼抗壓強度技術(shù)規(guī)程（JGJ/T 2392）辦理。只是砼強度換算值，使用大流動性泵送砼回彈測強曲線計算。為了方便應用，我們對大流動性泵送砼回彈測強曲線進行了制表，以便查用。三、 大流動性泵送砼回彈測強曲線的應用范圍：大流動性泵送砼回彈測強測區(qū)強度換算表，可用于符合下列條件的砼：（1） 砼拌合物坍落度180mm，并采用泵送工藝

3、澆注的普通砼及高強砼；（2） 采用425或425R或525或525R的硅酸鹽或普通硅酸鹽水泥配制的砼；（3） 骨料最大粒徑40的卵石及最大粒徑31.5的碎石和中砂配制的砼；（4） 用高效減水劑或高效泵送劑或緩凝減水劑配制的砼；（5） 期為3090天的砼（6） 抗壓強度.為3271Mpa的砼（7） 成都地區(qū)生產(chǎn)使用的大性流動性泵送砼；四、回彈測區(qū)砼強度換算表：平均回彈值Rm測區(qū)混凝土強度換算值（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） 本表系成都地區(qū)大流動性泵送砼回彈法測強測區(qū)強度換算表。（2） 表中測區(qū)平均回彈值范圍為35.046.2時，方可查算測區(qū)砼抗壓強度若Rm小于35.0時按國家統(tǒng)一曲線查表；若RM大于46.2時按46.2計，不得外推。（3） 表中未列入