DBJ14 BG4-99 回弹法监测混凝土抗压强度技术规程.doc

山 东 省 标 准回弹法监测混凝土抗压强度技术规程DBJ14-BG4-991999 济南山 东 省 标 准回弹法监测混凝土抗压强度技术规程DBJ14-BG4-99主编单位：山东省建筑科学研究院批准部门：山东省建筑委员会实行日期：1999年11月1日1999 济南目 录主要符号（1）1.总则（2）2.回弹仪（3）2.1.技术要求（3）2.2.检定（4）2.3.操作（5）2.4.保养（5）3.监测技术（7）3.1.一般规定（7）3.2.回弹值测量与计算（9）3.3碳化深度值测量与计算（11）4.混凝土强度的推定（12）附录A 检测报告（15）附录B 专用测强曲线的制定方法（16）附录C 非水平方向检测时回弹值的修正值（19）附录D 不同浇筑面上回弹值的修正值（21）附录E 测区混凝土强度换算表（21）附录F 本规程用词说明（25）附加说明 （26）主 要 符 号Rm 测区平均回弹值；Raa 非水平方向检测时，回弹值的修正值；Ra 角度修正后的测区平均回弹值；Ra 回弹仪检测混凝土浇筑顶面时，回弹值的修正值；Rba 回弹仪检测混凝土浇筑底面时，回弹值的修正值；Rn 浇筑面修正后的测区平均回弹值；Rm.i 结构或构件第i个测区平均回弹值；dm 测区平均碳化深度值；dm.i 结构或构件第i个测区的平均碳化深度；1 总 则1.0.1 为统一山东省使用回弹仪检测普通混凝土抗压强度的方法，保证检测进度，制定本规程。1.0.2 本规程实用于采用中型回弹仪检测和推定山东省范围内建筑工程结构或构件中普通混凝土抗压强度（以下简称混凝土强度）。1.0.3 本规程所定义的回弹法是指通过检测结构或构件混凝土的回弹值和碳化深度值来推定该结构或构件混凝土强度的方法。结构或构件测区混凝土强度强度换算值是指按本规程测得的回弹值和碳化深度值换算成相当于被测结构或构件的测区在该龄期下的混凝土抗压强度值。混凝土强度推定值是指相应于强度换算值总体分布中保证率不低于95的强度值。1.0.41.0.5本规程适用于符合下列条件的混凝土的强度的检测：（1）符合普通混凝土用材料、拌合用水的质量标准且采用粗骨料为碎石；（2）不掺引气型外加剂；（3）采用普通成型工艺；（4）采用符合国家现行标准混凝土结构工程施工及验收规范GB50204规定的钢模、木模及其它材料制成的模板；（5）自然养护或蒸汽养护出池后经自然养护7d以上，且混凝土表层为干燥状态。（6）龄期为14110天；（7）抗压强度为1060MPa；1.0.6当有下列情况之一时，不能按本规程进行混凝土强度的检测：（1）测试部位表层与内部质量有明显差异或内部存在缺陷；（2）遭受冻害、化学侵蚀、火灾、高温损伤。1.0.7当有下列情况之一时，不能按公式（4.0.1）计算或附录E换算测区混凝土强度值，但可制定专用测强曲线或通过试验进行修正：（1）粗集料最大粒径大于40mm；（2）特种成型工艺制成的混凝土；（3）检测部位曲率半径小于250mm的混凝土。1.0.81.0.91.0.102 回 弹 仪2.1 技术要求2.1.12.1.2回弹仪应符合下列标准状态的要求：（1）回弹仪水平弹击时冲击能量应为2.207j；（2）刻度尺上“100”刻线，应与机壳刻度槽“100”刻线重合；（3）指针长度应为20.0mm；（4）；（5）；（6）；（7）；附录C 非水平方向检测时回弹值的修正值Rm检 测 角 度向 上向 下90604530304560902021222324-6.0-5.9-5.8-5.7-5.6-5.0-4.9-4.8-4.7-4.6-4.0-4.0-3.9-3.9-3.8-3.0-3.0-2.9-2.9-2.8+2.5+2.5+2.4+2.4+2.3+3.0+3.0+2.9+2.9+2.8+3.5+3.5+3.4+3.4+3.3+4.0+4.0+3.9+3.9+3.82526272829-5.5-5.4-5.3-5.2-5.1-4.5-4.4-4.3-4.2-4.1-3.8-3.7-3.7-3.6-3.6-2.8-2.7-2.7-2.6-2.6+2.3+2.2+2.2+2.1+2.1+2.8+2.7+2.7+2.6+2.6+3.3+3.2+3.2+3.1+3.1+3.8+3.7+3.7+3.6+3.63031323334-5.0-4.9-4.8-4.7-4.6-4.0-4.0-3.9-3.9-3.8-3.5-3.5-3.4-3.4-3.3-2.5-2.5-2.4-2.4-2.3+2.0+2.0+1.9+1.9+1.8+2.5+2.5+2.4+2.4+2.3+3.0+3.0+2.9+2.9+2.8+3.5+3.5+3.4+3.4+3.33536373839-4.5-4.4-4.3-4.2-4.1-3.8-3.7-3.7-3.6-3.6-3.3-3.2-3.2-3.1-3.1-2.3-2.2-2.2-2.1-2.1+1.8+1.7+1.7+1.6+1.6+2.3+2.2+2.2+2.1+2.1+2.8+2.7+2.7+2.6+2.6+3.3+3.2+3.2+3.1+34.0-4.0-3.9-3.9-3.8-3.5-3.5-3.4-3.4-3.3-3.0-3.0-2.9-2.9-2.8-2.0-2.0-1.9-1.9-1.8+1.5+1.5+1.4+1.4+1.3+2.0+2.0+1.9+1.9+1.8+2.5+2.5+2.4+2.4+2.3+3.0+3.0+2.9+2.9+2.84546474849-3.8-3.7-3.7-3.6-3.6-3.3-3.2-3.2-3.1-3.1-2.8-2.7-2.7-2.6-2.6-1.8-1.7-1.7-1.6-1.6+1.3+1.2+1.2+1.1+1.1+1.8+1.7+1.7+1.6+1.6+2.3+2.2+2.2+2.1+2.1+2.8+2.7+2.7+2.6+2.65051525354-3.5-3.5-3.4-3.4-3.4-3.0-3.0-2.9-2.9-2.9-2.5-2.5-2.4-2.4-2.4-1.5-1.5-1.4-1.4-1.4+1.0+1.0+0.9+0.9+0.9+1.5+1.5+1.4+1.4+1.4+2.0+2.0+1.9+1.9+1.9+2.5+2.5+2.4+2.4+2.45556-3.3-3.3-2.8-2.8-2.3-2.3-1.3-1.3+0.8+0.8+1.3+1.3+1.8+1.8+2.3+2.3注：Rm小于20或大于56时，均分别按20或56查表；表中未列入的相应于Rm的修正值可用内插法求得，精确至0.1。附录D 不同浇筑面上回弹值的修正值Rm或Rbm顶面修正值Rm底面修正值Rbm20+2.5-3.021+2.4-2.922+2.3-2.823+2.2-2.724+2.1-2.625+2.0-2.526+1.9-2.427+1.8-2.328+1.7-2.229+1.6-2.130+1.5-2.031+1.4-1.932+1.3-1.833+1.2-1.734+1.1-1.635+1.0-1.536+0.9-1.437+0.8-1.338+0.7-1.239+0.6-1.140+0.5-1.041+0.4-0.942+0.3-0.843+0.2-0.744+0.1-0.6450-0.5460-0.4470-0.3480-0.2490-0.15000注：Rm小于20或大于56时，均分别按20或56查表；表中有关混凝土浇筑顶面的修正系数，是指一般原浆抹面的修正值。表中有关混凝土浇筑底面的修正系数，是指构件底面与侧面采用同一类模板在正常浇筑情况下的修正值。表中未列入的相应于Rm的修正值可用内插法求得，精确至0.1。附录E 测区混凝土强度换算表测区平均回弹值Rm测区混凝土强度换算值（MPa）平均碳化深度值dm（mm）00.51.01.52.02.53.03.54.04.55.05.56.019.410.019.610.29.919.810.410.120.010.610.39.920.210.810.510.120.411.010.710.310.020.611.210.910.510.220.811.511.110.710.410.021.011.711.310.910.610.29.921.211.911.511.110.810.410.121.412.111.711.310.910.610.29.921.612.311.911.511.110.810.410.121.812.512.111.711.311.010.610.39.922.012.812.311.911.611.210.810.510.122.213.012.612.211.811.411.010.610.310.022.413.212.812.412.011.611.210.810.510.122.613.413.012.612.211.811.411.010.710.310.022.813.713.212.812.412.011.611.210.810.510.123.013.913.513.012.612.211.811.411.010.710.310.023.214.113.713.212.812.412.011.611.210.810.510.123.414.413.913.513.012.612.211.811.411.010.710.310.023.614.614.113.713.212.812.412.011.611.210.810.510.123.814.914.413.913.413.012.612.211.811.411.010.710.310.024.015.114.614.113.713.212.812.412.011.611.210.810.510.124.215.314.814.413.913.413.012.612.211.811.411.010.610.324.415.615.114.614.113.713.212.812.412.011.611.210.810.524.615.815.314.814.313.913.413.012.612.111.711.411.010.624.816.115.615.114.614.113.613.212.712.311.911.511.210.825.016.315.815.314.814.313.813.412.912.512.111.711.311.025.216.616.115.515.014.514.113.613.212.712.311.9111.511.125.416.916.315.815.314.814.313.813.412.912.512.111.711.325.617.116.616.015.515.014.514.013.613.112.712.311.911.525.817.416.816.315.715.214.714.213.813.312.912.512.011.726.017.617.116.516.015.414.914.414.013.513.112.612.211.826.217.917.316.716.215.715.214.714.213.713.312.812.412.026.418.217.617.016.415.915.414.914.413.913.513.012.612.226.618.417.817.216.716.115.615.114.614.113.713.212.812.426.818.718.118.516.916.415.815.314.814.313.913.413.012.527.019.018.317.717.216.616.115.515.014.514.113.613.212.727.219.218.618.017.416.816.315.815.214.714.313.813.312.927.419.518.918.317.717.116.516.015.515.014.514.013.513.127.619.819.118.517.917.316.816.215.715.214.714.213.713.327.820.119.418.818.217.617.016.415.915.414.914.413.913.528.020.419.719.018.417.817.216.716.115.615.114.614.113.728.220.620.019.318.718.117.516.916.315.815.314.814.313.828.420.920.219.618.918.317.117.116.616.015.515.014.514.028.621.220.519.819.218.618.017.416.816.215.715.214.714.228.821.520.820.119.418.818.217.617.016.515.915.414.914.4Rm00.51.01.52.02.53.03.54.04.55.05.56.029.021.821.120.419.719.118.417.817.316.716.115.615.114.629.222.121.420.720.019.318.718.117.516.916.415.915.314.829.422.421.620.920.219.618.918.317.717.116.616.015.515.029.622.721.921.220.519.819.218.618.017.416.816.215.715.229.823.022.221.520.820.119.418.818.217.617.016.515.915.430.023.322.521.821.020.419.719.018.417.817.216.716.115.630.223.622.822.021.320.619.919.318.718.117.516.916.315.830.423.923.122.321.620.920.219.518.918.317.717.116.516.030.624.223.422.621.921.220.519.819.118.517.917.316.816.230.824.523.722.922.121.420.720.019.418.818.117.517.016.431.024.824.023.222.421.721.020.319.619.018.417.817.216.631.225.124.323.522.722.021.220.519.919.218.618.017.416.831.425.424.623.823.022.221.520.820.119.518.818.217.617.031.625.724.924.123.322.521.821.120.419.719.118.417.817.331.826.025.224.423.622.822.021.320.619.919.318.718.117.532.026.425.524.723.823.122.321.620.920.219.518.918.317.732.226.725.825.024.123.322.621.821.120.419.819.118.517.932.427.026.125.324.423.622.922.121.420.720.019.418.718.132.627.326.425.624.723.923.122.421.620.920.219.618.918.332.827.626.725.925.024.223.422.621.921.220.519.819.218.533.028.027.126.225.324.523.722.922.221.420.720.119.418.833.228.327.426.525.624.824.023.222.421.721.020.319.619.033.428.627.726.825.925.124.223.422.721.921.220.519.919.233.629.028.027.126.225.324.523.722.922.221.520.820.119.433.829.328.327.426.525.624.824.023.222.421.721.020.319.634.029.628.727.726.825.925.124.323.522.722.021.220.519.934.230.029.028.027.126.225.424.523.723.022.221.520.820.134.430.329.328.427.426.525.724.824.023.222.521.721.020.334.630.629.628.727.726.826.025.124.323.522.722.021.320.634.831.030.029.028.027.126.225.424.623.723.022.221.520.835.031.330.329.328.427.426.525.724.824.023.222.521.721.035.231.730.629.628.727.726.826.025.124.323.522.722.021.335.432.031.030.029.028.027.126.225.424.523.723.022.221.535.632.431.330.329.328.427.426.525.724.824.023.222.521.735.832.731.730.629.628.727.726.825.925.124.323.522.722.036.033.132.031.029.929.028.027.126.225.424.523.723.022.236.233.432.431.330.329.328.327.426.525.624.824.023.222.436.433.832.731.630.629.628.627.726.825.925.124.223.422.736.634.233.132.030.929.928.928.027.126.225.324.523.722.936.834.533.432.331.330.229.228.327.426.525.624.823.923.237.034.933.832.631.630.529.528.627.626.725.925.024.223.437.235.334.133.031.930.929.928.927.927.026.126.324.523.737.435.624.533.332.231.230.229.228.227.326.425.524.723.937.636.034.833.732.631.530.529.528.527.626.725.825.024.137.836.435.234.032.931.830.829.828.827.927.026.025.224.438.036.735.534.433.332.231.130.129.128.227.226.325.524.638.237.135.934.733.632.531.430.429.428.427.526.625.724.938.437.536.335.133.932.831.730.729.728.727.826.926.025.238.637.936.635.434.333.232.131.030.029.028.127.226.325.438.838.337.035.834.633.532.431.330.329.328.427.426.525.739.038.637.436.135.033.832.731.630.629.628.627.726.825.939.239.037.736.535.334.233.632.030.929.928.928.027.126.2Rm00.51.01.52.02.53.03.54.04.55.05.56.039.439.438.136.935.734.533.432.331.230.229.228.327.326.439.639.838.537.236.034.833.732.631.530.529.528.527.626.739.840.238.937.636.435.234.032.931.830.829.828.827.927.040.040.639.238.036.735.534.433.232.131.130.129.128.127.240.241.039.638.337.135.934.733.632.531.430.429.428.427.540.441.440.038.737.436.235.033.932.831.730.729.728.727.740.641.840.439.137.836.635.434.233.132.031.029.929.028.040.842.240.839.438.236.935.734.533.432.331.230.229.228.341.042.641.239.838.537.336.034.933.732.631.530.529.528.541.243.041.640.238.937.636.435.234.032.931.830.829.828.841.443.441.940.639.238.036.735.534.433.232.131.130.129.141.643.842.341.039.638.337.135.934.733.532.431.430.429.441.844.242.741.340.038.737.436.235.033.932.731.730.629.642.044.643.141.740.439.037.836.535.334.233.132.030.929.942.245.043.542.140.739.438.136.935.734.533.432.331.230.242.445.443.942.541.139.838.537.236.034.833.732.631.530.542.645.844.342.941.540.138.837.536.335.134.032.931.830.742.846.244.743.341.940.539.237.936.635.434.333.232.131.043.046.745.143.742.240.939.538.237.035.834.633.532.431.343.247.145.544.142.641.239.938.637.336.134.933.832.731.643.447.546.044.543.041.640.238.937.636.435.234.132.931.943.647.946.444.843.442.040.639.338.036.735.534.433.232.243.848.446.845.243.842.340.939.638.337.135.834.733.532.444.048.847.245.644.242.741.340.038.737.436.235.033.832.744.249.247.646.144.543.141.740.339.037.736.535.334.133.044.449.748.046.544.943.542.040.739.338.036.835.634.433.344.650.148.446.945.343.842.441.039.738.437.135.934.733.644.850.548.947.345.744.242.841.440.038.737.436.235.033.945.051.049.347.746.144.643.141.740.439.037.836.535.334.245.251.449.748.146.545.043.542.140.739.438.136.835.634.545.451.850.148.546.945.443.942.541.139.738.437.235.934.845.652.350.648.947.345.844.342.841.440.138.837.536.335.145.852.751.049.347.746.244.643.241.840.439.137.836.635.446.053.241.549.748.146.545.043.542.140.739.438.136.935.746.253.651.950.248.546.945.443.942.541.139.738.437.236.046.454.152.350.648.947.345.844.342.841.440.138.837.536.346.654.552.751.049.347.746.244.743.241.840.439.137.836.646.855.053.251.449.848.146.545.043.642.140.739.438.136.947.055.453.651.950.248.546.945.443.942.541.139.738.437.247.255.954.152.350.648.947.345.844.342.841.440.138.837.547.456.354.552.751.049.347.746.144.643.241.840.439.137.847.656.854.953.151.449.748.146.545.043.542.140.739.438.147.857.355.453.651.850.148.546.945.443.942.441.139.738.448.057.755.854.052.250.548.947.345.744.242.841.440.038.748.258.256.354.552.750.949.347.746.144.643.141.740.439.048.458.756.754.953.151.449.748.146.545.043.542.140.739.448.659.157.255.353.551.850.148.446.945.343.842.441.039.748.859.657.755.853.952.250.548.847.245.744.242.741.340.049.060.158.156.254.452.650.949.247.646.044.543.141.740.349.258.656.754.853.051.349.648.046.444.943.442.040.649.459.057.155.253.451.750.048.446.845.243.842.340.949.659.557.655.753.852.150.448.747.145.644.142.741.3Rm00.51.01.52.02.53.03.54.04.55.05.56.049.860.058.056.154.352.550.849.147.546.044.443.041.650.058.556.554.752.951.249.547.946.344.843.341.950.258.957.055.153.351.649.948.246.74