回彈法檢測混凝土抗壓強度技術規程摘要1?回彈儀使用方法要點：緩慢施壓，準確讀數，快速復位。構件的抽查數量：不得少于同批構件總數的30%且構件數量不得少于10件。測區1）每一結構或構件測區數不應少于10個，對某一方向尺寸小于4.5m且另一尺寸小于0.3m的構件，其測區數可適當減少，但不應少于5個；2）相鄰測區的間距應控制在2m以內，測區離端部，邊緣的距離不宜大于0.5m,且不小于0.2m;3）測區應均勻分布，在重要部位及薄弱部位必須布置測區，并應避開預埋件；4）測區的面積不宜大于0.04m2；5）檢測面應清潔、平整。6）對彈擊時產生顫動的薄壁、小型構件應進行固定。4?測點：在測區范圍內宜均勻分布，相鄰兩測點的凈距不宜小于20mm；測點距外露鋼筋、預埋件距離不宜小于30mm。測點不應在氣孔或外露石子上，同一測點只應彈擊一次。每一測區應記取16個回彈值，估讀至1。5.碳化深度值測量1）測量值測量完畢后，應在有代表性的位置上測量碳化深度值，測點不應少于構件測區數的30%，取其平均值為該構件每測區的碳化深度值，當碳化深度值極差大于2.0mm時，應在每一測區測量碳化深度值。2）可采用適當工具在測區表面形成直徑約15mm的孔洞，其深度應大于混凝土碳化深度。孔洞中的粉未和碎屑應除凈，并不得用水擦洗。同時應采用濃度為1%的酚酞溶液滴在孔洞內壁的邊緣處，當已碳化與未碳化界線清楚時，再用深度測量工具測量已碳化與未碳化混凝土交界面到混凝土表面的垂直距離，測量不應少于3次，取其平均值。每次讀數精確至0.5mm。

混凝土強度推定值計算程序10」10210」102修正值是指“用代數方法與未修正測量結果相加，以補償其系統誤差的值”。當計量器具的示值誤差為已知時，則可通過減去（當示值誤差為正值時）或加上（當示值誤差為負值時）該誤差值，使測量值等于被測量的實際值。減去或加上的這個值即為修正值，它與示值誤差在數值上相等，但符號相反。測區混凝土強度換算值：由則區的平均回彈值和碳化深度值通過測強曲線計算得到的該檢測單元的現齡期混凝土抗壓強度值。混凝土強度換算表附錄A測區混凝土強度換算表平均回彈值Rm測區混凝土強度換算值（MPa）0.51.01.5平均碳化深度值dni（nnn）__402.02.53.0斗.55.05.520.010.310.120.2

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104102104續表續表平均回彈值Rm測區混凝土強度換算值幾J(NlPa)平均碳化深度ffLcL(nun)00.51.01.52.02.53.03.54.04.55.05.5$6.024.215.114.814.313.913.312.812.411.911.611.210.910.610.324.415.415.114.614.213.613.112.612.211.911.411.110.810.424.615.615.314.814.413.713.312.812.312.011.511.210.910.624.815.915.615.114.614.013.513.012.612.211.811.411.110.725.016.215.915.414.914.313.813.312.812.512.011.711.310.925.216.416.115.615.114.413.913.413.012.612.111.811.511.025.416.716.415.915.414.714.213.713.212.912.412.011.711.225.616.916.616.115.714.914.413.913.413.012.512.211.811325.817.216.916.315.815.114.614.113.613.212.712.412.011.526.017.517.216.616.115.414.914.413.813.513.012.612.211.626.217.817.416.916.415.715.114.614.013.713.212.812.411.826.418.017.617.116.615.815.314.814.213.913.313.012.612.026.618.317.917.416.816.115.615.014.414.113.513.212.812.126.81&61&217.717.116.415.815.314.614.313.813.412.912.327.01&91&51&017.416.616.115.514.814.614.013.613.112.427.219.118.7l&l17.616.816.215.715.014.714.113.813.312.627.419.419.01&417.817.016.415.915.214.914.314.013.412.727.619.719.31&7l&O17.216.616.115.415.11丄514.113.612.927.820.019.619.01&217.416.816.315.615314.714.213.713.028.020.319.719.21&417.617.016.515.815.414.814.413.913.22&220.620.019.518.617.817.216.716.015.615.014.614.013.32&420.920.319.71&818.017.416.916.215.815.214.814.213.528.621.220.620.019.118.217.617.116.416.015.415.014.313.62&821.520.920.219.418.517.817.316.616.215.615.214.513.829.021.821.120.519.61&7l&l17.516.816.415.815.414.613.9

平均回彈值Rm測區混凝土強度換算值幾丿(MPa)平肉碳化深度fflcL(mill)00.51.01.52.02.53.03.54.04.55.05.5$6.029.222.121.420.819.919.01&317.717.016.616.015.614.814.129.422.421.721.120.219.31&617.917.216.816.215.815.014.229.622.722.021.320.419.51&81&217.517.016.416.015.114.429.823.022.321.620.719.819.11&417.717.216.616.215.314.530.023.322.621.921.020.019.31&617.917.416.816.415.414.730.223.622.922.221.220.319.618.918.217.617.016.615.614.930.423.923.222.521.520.619.819.118.417.817.216.815.815.130.624.323.622.821.920.920.219.418.71&017.517.016.015.230.824.623.923.122.121.220.419.71&91&217.717.216.215.431.024.924.223.422.421.420.719.919.21&417.917.416.415.531.225.224.423.722.721.720.920.219.41&61&117.616.615.731.425.624.824.123.022.0717厶JL■厶20.519.718.91&417.816.915.831.625.925.124.323.322.321.520.719.919.21&61&017.116.031.826.225.424.623.622.521.721.020.219.41&91&217.316.232.026.525.724.923.922.822.021.220.419.619.11&417.516.43??26.926.125.324.223.122.321.520.719.919.418.617.716.632.427.226.425.624.523.422.621.820.920.119.618.817.916.832.627.626.825.924.823.722.922.121.320.419.919.01&117.032.827.927.126.225.124.023.222.321.520.620.119.21&317.233.02&227.426.525.424.323.422.621.720.920.319.41&517.433.22&627.726.825.724.623.722.922.021.220.519.61&717.633.428.928.027.126.024.924.023.122.321420.719.81&917.833.629.32&427.426.425.224.223.322.621.720.920.019.11&033.829.62&727.726.625.424.423.522.821.921.120.219.31&234.030.029.128.026.825.624.623.723.022.121.320.419.51&3續表續表平均回Rm測區混凝土強度換算值(MPa)平陶碳化深度憤dw(mni)00,51,0L52.02.53.Q3,54.04.55.055^6.034.230.32942S.327.025.824.&23.923.222321.520.619.71&.434.430.729.828.627.226.025.024.123422.521.720819.81&百34.63J.130.228.927.426.225.224.323.622,721.921..020.018.834.83J.430.529/227.626.425.424.523.822,922.121.220.219.035.03J.S30.829.628.026.725.S24.824.023.222.321..420.4J9.235.232.131.129.928.227.026.025.024.223.422.521.620619435.432.531.530:228.627.326325.424423.72Z821.&20.819.635.632.931.930.629.027.626.625.724.724023.022.021.019.835.833.332.331029328.027.026：025.024323.322.221220036.033.632.631.229.628.227,226.225.224,523.522.421420.236.234.033.031629.928.627.526.525.524.823.S22.621620.436.434.433.432.030.328.927.926.825.825A24.122.821.820.636.634.S33.832.430.629.228227.12(5.125A24.423.022.020.936.83523丄132.731.029.628.527.526425724.623.222.221.137.035.534.433..O31.229.828.S27.726.625,924思23422.421.337.235.934.833.431630229.128.026.926.225.123.722.621537.436.335.233.831.9^0.529.428327.226.525.424.022.921837.636.735.634.132.330829.728.627.526.825.724.223」22.037.837.136.034.532.631.230.028.927.827A26024523.422.338.037.536A34.933.031.530329.22&.127426.224&23.622.53&237,936,835/233.431.830.629.528427,726,525.023.9227炎438.337.235,633.732.130.929.82&?2&026.825324.123.03&63&737.536.034J32.431236129.028,327.025.524.423.238.839.137.936434.4^2.731§30.429.328.^27.225.824.623.539.039.538.236.734.733.031S30.629.628.827426.0248237

平均回彈測區混凝止強度換算值九"（MPa）值甌平均碳化深度fli.心（口皿1）00.51.01.52.02.53.03.54.04.55.05.5>6039.239.9S8.537.035.033.332.130.829.829.027.626225.024.039.440.338.837.335.3陽石32J3L030.029227.826.425.224.239.640.739.137.635.633.932.731230229.428.026.625.424.439S41239.638.035.934.233.0?1430.529.728.225.624.740.041639.938.336.234.533.33L730.830.Q2&427.Q2戲25.040.242.040.338.636.534.833.632.031.130228.627.326.025240.442.44Q.739.036.935.133.932.331J3052&呂27.626225.440.642.841.139.437.235.434.232.631.730.829.127.826.525.740.843.341.639.S37.735.734.532.932.031.229.423.126.826.041.043.742.040.238.036.034.833.232.331.529.72S.427.126.241244I42344)638.43&335.133.532.631830.028.727.326.541444542.740938.7石35.433.832-932.030.328.927.626.741645043.241439.236935.734.233.332.430.629227.927.041.345.443.641S39.537.236.034.533.632.730.929.528..127.242.045.944,142.239.937.636.334534,033.031.229.828.527.542.246.344,442.640.33&036.63?.234333.331.530J28.727.S42.446.744.843.040.63S.336.935.534.633.631.830429.02S.042.647.245.343.441.13B.7打.335.9弭.934,032.130.729.32S.342.847645.743.S41439.0芥.636.235.234332.430.929.528.643.048.146.244.241.839.436.635.634Z32731329.82S.94324S546.644642.239.8丸-336.93*934933..031530.129.143449047.045142.6402陰一737.23&H35.333.331830429.443649.447.445.443.040539.037.5北￡35.633.632J30.629.643.849.947.945.943.440937,936.935.933..932.430..929.944.050.448,446.443.S41.339.838.337336.334.332.831.230.2

彈值測區混凝土強度換算值兀叩(MPa)*F均碳化秣度值如(nn)i)0051.01呂2.02?3.03.5404550^6.044250.843,846744.241740」38.637,636.634.533.G31.530?44.45L349.247.244.642A40.539.038.036.934.933.331.830844.651.749,647.645.042,440.8迪338,337；235.233.632.131.044.852250.148.045.442,S41,239.73&,637.635.533.932.J31.345.052.750.648.545.S43.241640.139.037.935.834.332.731.645.253,251.148.946343,642,040.439,438336,234633.031.945.453.65J5斗9446.644.042.340.739J38.636.434.S33.232.245.654.151949.847.144.442.741.140.039.036.835.233.532.545.854.652A50.247.544,8閱」41.540,439.337,135.533.932.S46.055.052.850647.945.243.541.940.839.737.535.S34.233146.255.553351.148.345.543.842241J40.037736.134J33.346.456.053.851.548.745,944,242,641440.338,136434.733.646.656.554.252049.246.344.642.941.840.738.436735.033946.857.054.7S2.449.646.745.043342.2斗1AJ38.537.035J34.247.057,555.252.950.047,245,243742,641439,137435.634.547.258.055.753450.547.645.844.142.941.839.437.736.034S47.458.556.2S3.850.948.046.244.5斗工342.139.838036.335.147.659.056,654351.348,446,644,843,742.540.13S.436,635.447.859.557.154.751.848.S47.045.244.042.840.538.736.935.748.060.057.655.252.249.247.445.644.443.240.839.G37.236.048.2——58.055.752.649,647,846,044,843.641139337.536348.4——5S.656153.150.048.246.445.143.94J539637.836648.6——59.056.653.550.448.646.745.544.341.840.G38.136.945.8——59.557.154.050.949.047.1錢944.642.240331249.0——60.057.554.451349.斗47.546.245.042.540.638.837.5

彈值Rtu測區混凝土強度換算值力叮(Mpa)半均碳化深度值心⑴呵00.51.01.52.02.53.03.54.04.55.05,526.049.2———5S054851749.847.946.645.442.841.039.137.849.4————5S.555.352150248347.145.843.241.339.43824Q.6————5S955.752.550,648,747,446.243.641.739738.549.8———59.456.253.05J049,147,846.543.942.040J38.850.0————59.956.753.449.548J斗6944.342.34CU39.150.2——————57.153.851949.9斗&547.244.642.640.739.4504—————57.654352350349.047.745.043.041.039.7506——————58.054.752.7507斗944S.045.443.4斗L440.050.S——————58.555.133.15L149.848.44574^.7斗1.740J510—————59.055.653,551,550,14B.846.144.142.0407512—————59.456054,051,950,549.246.444.442341.0,14—————59.956.454J52350949.646.844.7^2.741衛516————————56.954.8勸5L350.047.245.143.041.6518———————57.35?,253,15L750347.545.443341”852.G————————57.855.753.652.150.747.945.843.742.352.2————————58.2S6A,4.052.551.148.346.2斗工042.652.4———————慫？56,554J53,05L543.746.5斗4：43.052.6————————59.157,054,853,451.949.046.9447433