2021回弹法超声回弹综合法检测泵送混凝土抗压强度技术规程

回弹法、超声回弹综合法回弹法、超声回弹综合法检测泵送混凝土抗压强度技术规程目次12总则 1术、符号 2术语 2符号 目次12总则 1术、符号 2术语 2符号 3回仪和声波测仪 4回弹技术求 4超声检测技术求 5检技术 7344.14.24.34.4一般定 7回弹测量 9碳化度值量 10超声量 10567回值和速值算 测曲线 12混土强的推定 13A回弹法北京地区泵送混凝土测区混凝土强度换算表（浇筑面） 16回弹法北京地区泵送混凝土测区混凝土强度换算表（浇筑面） 22回弹法北京地区泵送混凝土测区混凝土强度换算表（浇筑面） 28超声回弹综合法北京地区泵送混凝土测区混凝土强度换算表浇筑面） 35超声回弹综合法北京地区泵送混凝土测区混凝土强度附录BCD附录E10换算表换算表浇筑面） 43附录F超声回弹综合法北京地区泵送混凝土测区混凝土强度换算表浇筑面） 51本规程词说明 60引用标名录 61条文说明 6311Contents12General1and22Contents12General1and223Reboundhammerandultrasonicdetector 4requirementsreboundhammer 4requirementsultrasonicdetector 5technology 7344.14.24.34.4Generalrequirements 7Reboundvaluemeasurement 9Carbonationdepthmeasurement 10Ultrasonicpulsemeasurement 105Calculationofreboundvalueandultrasonicpulsewavevelocity·················································································11strengthcurve 12Calculationcompressivestrengthforconcrete 1367AppendixAConversiontablecompressivestrengthconcretefortestareabymethod（sidesurfacecastconcrete） 16Conversiontablecompressivestrengthconcretefortestareabymethod（lowersurfacecastconcrete） 22Conversiontablecompressivestrengthconcretefortestareabymethod（uppersurfacecastconcrete） 28Conversiontablecompressivestrengthconcretefortestareabyultrasonic-reboundcombinedAppendixBAppendixCAppendixD12method（sidesurfacemethod（sidesurfacecastconcrete） 35AppendixE Conversiontablecompressivestrengthconcretefortestareabyultrasonic-reboundcombinedmethod（lowersurfacecastconcrete） 43AppendixFConversiontablecompressivestrengthpumpedconcretefortestareabyultrasonic-reboundcombinedmethod（uppersurfacecastconcrete） 51Explanationwordinginthisspecification 60Liststandards 61Explanationprovisions 63131总则为提高回弹法、超声回弹综合法在北京地区检测泵送混凝土抗压强度1总则为提高回弹法、超声回弹综合法在北京地区检测泵送混凝土抗压强度（以下简称混凝土强度）的精度，保障检测工作质量，制本规程适用于北京地区泵送普通混凝土强度的检测，不适用回弹法、超声回弹综合法检测泵送混凝土强度除应遵守本规程外，尚应符合国家现行有关标准的规定。12 术语、符号2.12 术语、符号2.1术语构件member按照检测要求确定的各层轴线与轴线间的梁、板、柱、墙等混凝土结构单元。测区testarea检测构件混凝土强度时的一个检测区域。测点testpoint测区内的一个回弹检测点。回弹法reboundmethod（弹距离与弹簧初始长度之比）作为与强度相关的指标，来推定混凝超声回弹综合法ultrasonic-reboundcombinedmethod依据测量得到的混凝土超声波声速值和回弹值作为与强度相关的指标，来推定混凝土强度的方法。超声速度ultrasonicpulsevelocity超声脉冲波在混凝土中单位时间内传播的距离。strengthtestarea由测区的平均回弹值和碳化深度值或声速值通过测强曲线或测区强度换算表换算得到的测区现龄期混凝土强度值。混凝土强度推定值estimationvaluestrengthconcrete相应于强度换算值总体分布中保证率不低于95%的构件现龄期混凝土的强度值。22.2 dm——fc——测区混凝土强度换算值。cu,ifm——f2.2 dm——fc——测区混凝土强度换算值。cu,ifm——fc——对应芯样部位回弹测区的混凝土强度换算值的平均值。cu,m0fcor,i——第i个混凝土芯样试件的抗压强度。fc——修正前第i——修正后第icu,i0fccu,i1fccu,min——构件中测区混凝土强度换算值的最小值。fcu,e——构件混凝土强度推定值。m ——cfcusc——构件测区混凝土强度换算值的标准差。fcuRi——测区第i个测点的回弹值。——li——测区第iti——测区第iv——△tot——测区混凝土强度修正量。33回弹仪和超声波检测仪3.1回弹仪技术要求GB/T3回弹仪和超声波检测仪3.1回弹仪技术要求GB/T的规定外，1 水平弹击时，弹击锤脱钩的瞬间，回弹仪的标称能量应为2.207J。在洛氏硬度60±280±2。。（-4～40）℃。回弹仪检定（校准）周期为半年。当回弹仪具有下列情况之：12345新回弹仪启用前；超过检定（校准）有效期限；数字式回弹仪数字显示的回弹值与指针直读示值相差大于1；经保养后，在钢砧上的率定值不合格；遭受严重撞击或其他损害。回弹仪率定试验应符合下列规定：2校准（5～35）率定试验应在洛氏硬度HRC为60±2的钢砧上进行，钢砧表3.1.5123面应干燥、清洁，并应稳固地平放在刚度大的物体上。4旋转90度，每个方向的回弹平均值应为80±2。3.1.6 旋转90度，每个方向的回弹平均值应为80±2。3.1.6 123弹击超过2000次；在钢砧上的率定值不合格；对检测值有怀疑。回弹仪的保养应符合下列规定：先将弹击锤脱钩，取出机芯，然后卸下弹击杆，取出里面的3.1.71缓冲压簧，并取出弹击锤、弹击拉簧和拉簧座。杆的内孔及冲击面。清理后，应在中心导杆上薄薄涂抹钟表油，其（0.5～0.8）N。3.1.53.1.8回弹仪使用完毕，应使弹击杆伸出机壳，并应清除弹击杆、应将弹击杆压入机壳内，经弹击后应按下按钮，锁住机芯，然后装入仪器箱。仪器箱应平放在干燥阴凉处。当数字式回弹仪长期不用时，还应取出电池。3.25字信号、测读声学参数和对数字信号处理的智能化功能。3.2.2 JG/T5004的规定外，尚应符合下列规定：1字信号、测读声学参数和对数字信号处理的智能化功能。3.2.2 JG/T5004的规定外，尚应符合下列规定：1234具有波形清晰、显示稳定的示波装置。声时最小分度为0.1μs。具有最小分度为1dB的衰减系统。10kz50kz80d，接收灵敏度（在信噪比为3:1时）不大于50μV。20μs～30μs1h数±0.2μs。一hmn.2s。3.2.5 50kHz～100kHz率相差应不大于±10%。3.2.63.2.73.2.8超声波检测仪的使用环境温度应为（0～40）℃。超声波检测仪检定（校准）周期为1年。超声波检测仪保养应符合下列规定：应存放在阴凉、干燥的环境中。较长时间不用时，应定期通电排除潮气。工作时应采取防尘、防震措施。12364检测技术4.1一般规定4.1.1 回弹仪和超声波检测仪应在检定（校准4检测技术4.1一般规定4.1.1 回弹仪和超声波检测仪应在检定（校准）有效期内使用。回弹仪在检测前后，均应在钢砧上进行率定试验，并应符合本规程第3.1.2条的规定。345施工模板，混凝土浇筑、养护情况及浇筑日期等。必要的设计图纸和施工记录。检测原因。混凝土强度检测可按单个构件或按批量进行检测，并应符合4.1.3下列规定：4.1.44.1.5条的规定。相同，原材料、配合比、成型工艺、养护条件基本一致且龄期相近的一批同类构件的检测。按批量检测时，应随机抽取构件并使所抽30%1030GB/T50344GB/T50784105个：304.5m0.3m。7测区应优先选在能使回弹仪处于水平方向的混凝土浇筑侧面。当不具备条件时，应优先选在能使回弹仪处于垂直向上方向的混凝土浇筑底面。当浇筑侧面和浇筑底面均不具备条件时，可选在称的可测面上时，可布置在同一可测面上，且应均匀分布。宜在构相邻两测区的间距不应大于2m0.5m0.2m测区应优先选在能使回弹仪处于水平方向的混凝土浇筑侧面。当不具备条件时，应优先选在能使回弹仪处于垂直向上方向的混凝土浇筑底面。当浇筑侧面和浇筑底面均不具备条件时，可选在称的可测面上时，可布置在同一可测面上，且应均匀分布。宜在构相邻两测区的间距不应大于2m0.5m0.2m。0.04m2。当检测条件与本规程测强曲线的适用条件有较大差异时，可100mm6少于9JGJ/T384的规定。计算时，测区混凝土强度修正量及测区混凝土强度换算值的修正方1 fc△tot=f（4.1.6-1）－m cu,m01nfm=nfcor,i（4.1.6-2）i81=nfcfc（4.1.6-3）cu,m0cu,ini1tta1=nfcfc（4.1.6-3）cu,m0cu,ini1tta1a；f,mafc——a.1；第ia至0.1MPa；——对应第i个芯样部位回弹测区的混凝土强度换算值a.1a；cu,fcor,ifccu,in——芯样数量。2 fc=fc +△tot（4.1.6-4）cu,i1 cu,i0式：fc —第i个测区修前的凝土度换a精cu,i00.1MPa；第ia0.1MPa。fccu,i14.2回弹值测量测量回弹值时，回弹仪的轴线应始终垂直于混凝土检测面，并应缓慢施压、准确读数、快速复位。对弹击时产生颤动的薄壁、161920mm20mm30mm4.3碳化深度值测量测点数不应少于构件测区数的30%2.0mm15mm1%～2%当已碳化与未碳化界线清晰时，立即采用碳化深度测量仪测量已碳3次，0.25mm。应取3次测量值的平均值作为测区检测结果，并应精确至0.5mm。4.4超声测量3好耦合。0.1μs1.0mm，。10回弹值和声速值计算55.0.1 163个最大值和3个最小值，余下的10个回弹值应按下式计算：10RiRm回弹值和声速值计算55.0.1 163个最大值和3个最小值，余下的10个回弹值应按下式计算：10RiRmi1 10（5.0.1）Rm——0.1；Ri——第i个测点的回弹值。5.0.2 3v1li（5.0.2）3 ti1ivm/s.01m/s；li第im10m；ti第i（s0.1s。116测强曲线本规程建立了结构构件混凝土浇筑侧面、浇筑底面、浇筑表面的回弹法测强曲线和超声回弹综合法测强曲线，见本规程附录A至附录F。A6测强曲线本规程建立了结构构件混凝土浇筑侧面、浇筑底面、浇筑表面的回弹法测强曲线和超声回弹综合法测强曲线，见本规程附录A至附录F。A至附录F进行测区混凝土强度换算：123456北京地区泵送混凝土；采用普通成型工艺；14d～365d；抗压强度为15MPa～60MPa。AF6.0.3地区泵送混凝土测强曲线，其强度误差符合下列规定：（1.0；（）17.0%。6.0.4 A至附录F进行测区混凝土强度换算：123特种成型工艺制作的混凝土。127混凝土强度的推定7..1 i（fc，cu,i（Rm）可由按本规程第5.0.14.3（dm）检测面为浇筑侧面时，构件第i个测区混凝土强度换算值1fc（ ）可由本规程附录Acu,i7混凝土强度的推定7..1 i（fc，cu,i（Rm）可由按本规程第5.0.14.3（dm）检测面为浇筑侧面时，构件第i个测区混凝土强度换算值1fc（ ）可由本规程附录Acu,if 0.210595R1.4863100.0062dmc（7.0.1-1）cu,im2 检测面为浇筑底面时，构件第i个测区混凝土强度换算值fc（ ）可由本规程附录Bcu,iR1.9030100.0097dmf 0.030685c（7.0.1-2）cu,im3 检测面为浇筑表面时，构件第i个测区混凝土强度换算值fc（ ）可由本规程附录Ccu,iR1.2824100.0092dmf 0.462321c（7.0.1-3）cu,imi7.0.2值（fc（v）..2cu,i和按本规程第5.0.1（Rm）出，并应符合下列规定：1 检测面为浇筑侧面时，构件第i个测区混凝土强度换算值fc（ ）可由本规程附录Dcu,i1.1984fc（7.0.2-1）cu,im2 检测面为浇筑底面时，构件第i个测区混凝土强度换算值fc（ ）可由本规程附录Ecu,i1.2265fc0.015965v（7.0.2-2）cu,im检测面为浇筑表面时，构件第i个测区混凝土强度换算值3fc（ ）可由本规程附录Fcu,i0.116802v1.89600.8673fcfc（ ）可由本规程附录Ecu,i1.2265fc0.015965v（7.0.2-2）cu,im检测面为浇筑表面时，构件第i个测区混凝土强度换算值3fc（ ）可由本规程附录Fcu,i0.116802v1.89600.8673fc（7.0.2-3）cu,im7.0.3构件的测区混凝土换算强度平均值可根据各测区的混凝土强10ncu,icfi1 m（7.0.3-1）fcncus （7.0.3-2）fccu式：m —件测混凝强度算值平均a精确cfcu0.1MPa；scafcu至0.01MPa；n——对于单个检测的构件，取该构件的测区数；对批量检测的构件，取所有被抽检构件测区数之和。7.0.4 （f,e）1 10f fc（7.0.4-1）cu,e cu,fc式中 cu,min——构中最的测混凝强度算值。14nfc2m2cu,i fci1 n1当构件的测区强度值中出现小于15.0MPa时：215.0MPafcu,e（7.0.4-2）310m1.645sfcu,e（7.0.4-3）ccuccuff4当构件的测区强度值中出现小于15.0MPa时：215.0MPafcu,e（7.0.4-2）310m1.645sfcu,e（7.0.4-3）ccuccuff4当按批量检测时，应按下列公式计算：mksfcu,e（7.0.4-4）ccuccuff1.645GB/T和《混凝土结构现场检测技术标准》GB/T50784的规定取值。7.0.5 对按批量检测的构件，当该批构件混凝土强度标准差出现下列情况之一时，则该批构件应全部按单个构件检测：当该批构件混凝土强度平均值小于25MPa、s 大于1cfcu4.50MPa时；2 当该批构件混凝土强度平均值不小于25MPa且不大于60MPa、sc5.50MPa时。fcu15附录A回弹法北京地区泵送混凝土测区混凝土强度换算表（浇筑侧面）（规范性附录）A回弹法北京地区泵送混凝土测区混凝土强度换算表（浇筑侧面）16平均回弹值测区混凝土强度换算值（MPa）平均碳化深度值（mm）0.00.51.01.52.02.53.03.54.04.55.05.56.06.57.07.517.815.215.1---------------18.015.515.315.215.115.0------------18.215.715.615.515.415.315.215.1----------18.416.015.915.715.615.515.415.315.215.1--------18.616.216.116.015.915.815.715.515.415.315.215.115.0-----18.816.516.416.316.116.015.915.815.715.615.515.415.215.115.0---19.016.816.616.516.416.316.216.015.915.815.715.615.515.415.315.215.1-19.217.016.916.816.716.516.416.316.216.116.015.815.715.615.515.415.315.219.417.317.217.016.916.816.716.616.416.316.216.116.015.915.715.615.515.419.617.517.417.317.217.116.916.816.716.616.516.316.216.116.015.915.815.719.817.817.717.617.417.317.217.116.916.816.716.616.516.316.216.116.015.920.018.118.017.817.717.617.417.317.217.117.016.816.716.616.516.416.216.120.218.318.218.118.017.817.717.617.517.317.217.117.016.816.716.616.516.420.418.618.518.418.218.118.017.817.717.617.517.317.217.117.016.816.716.620.618.918.818.618.518.418.218.118.017.817.717.617.517.317.217.117.016.920.819.219.018.918.818.618.518.418.218.118.017.817.717.617.517.317.217.121.019.419.319.219.018.918.818.618.518.418.218.118.017.817.717.617.517.321.219.719.619.419.319.219.018.918.818.618.518.418.218.118.017.817.717.621.420.019.819.719.619.419.319.219.018.918.718.618.518.418.218.118.017.821.620.320.120.019.819.719.619.419.319.119.018.918.718.618.518.318.218.121.820.520.420.320.120.019.819.719.519.419.319.119.018.918.718.618.518.322.020.820.720.520.420.220.120.019.819.719.519.419.319.119.018.818.718.622.221.121.020.820.720.520.420.220.119.919.819.719.519.419.219.119.018.822.421.421.221.120.920.820.620.520.420.220.119.919.819.619.519.419.219.122.621.721.521.421.221.120.920.820.620.5附录A回弹法北京地区泵送混凝土测区混凝土强度换算表（浇筑侧面）（规范性附录）A回弹法北京地区泵送混凝土测区混凝土强度换算表（浇筑侧面）16平均回弹值测区混凝土强度换算值（MPa）平均碳化深度值（mm）0.00.51.01.52.02.53.03.54.04.55.05.56.06.57.07.517.815.215.1---------------18.015.515.315.215.115.0------------18.215.715.615.515.415.315.215.1----------18.416.015.915.715.615.515.415.315.215.1--------18.616.216.116.015.915.815.715.515.415.315.215.115.0-----18.816.516.416.316.116.015.915.815.715.615.515.415.215.115.0---19.016.816.616.516.416.316.216.015.915.815.715.615.515.415.315.215.1-19.217.016.916.816.716.516.416.316.216.116.015.815.715.615.515.415.315.219.417.317.217.016.916.816.716.616.416.316.216.116.015.915.715.615.515.419.617.517.417.317.217.116.916.816.716.616.516.316.216.116.015.915.815.719.817.817.717.617.417.317.217.116.916.816.716.616.516.316.216.116.015.920.018.118.017.817.717.617.417.317.217.117.016.816.716.616.516.416.216.120.218.318.218.118.017.817.717.617.517.317.217.117.016.816.716.616.516.420.418.618.518.418.218.118.017.817.717.617.517.317.217.117.016.816.716.620.618.918.818.618.518.418.218.118.017.817.717.617.517.317.217.117.016.920.819.219.018.918.818.618.518.418.218.118.017.817.717.617.517.317.217.121.019.419.319.219.018.918.818.618.518.418.218.118.017.817.717.617.517.321.219.719.619.419.319.219.018.918.818.618.518.418.218.118.017.817.717.621.420.019.819.719.619.419.319.219.018.918.718.618.518.418.218.118.017.821.620.320.120.019.819.719.619.419.319.119.018.918.718.618.518.318.218.121.820.520.420.320.120.019.819.719.519.419.319.119.018.918.718.618.518.322.020.820.720.520.420.220.120.019.819.719.519.419.319.119.018.818.718.622.221.121.020.820.720.520.420.220.119.919.819.719.519.419.219.119.018.822.421.421.221.120.920.820.620.520.420.220.119.919.819.619.519.419.219.122.621.721.521.421.221.120.920.820.620.520.320.220.019.919.819.619.519.3DB11/T1446-2017A17平均回弹值测区混凝土强度换算值（MPa）平均碳化深度值（mm）0.00.51.01.52.02.53.03.54.04.55.05.56.06.57.07.522.822.021.821.721.521.321.221.020.920.720.620.520.320.220.019.919.719.623.022.322.121.921.821.621.521.321.221.020.920.720.620.420.320.120.019.923.222.522.422.222.121.921.821.621.421.321.121.020.820.720.520.420.320.123.422.822.722.522.322.222.021.921.721.621.421.321.121.020.820.720.520.423.623.123.022.822.622.522.322.222.021.821.721.521.421.221.120.920.820.623.823.423.223.122.922.822.622.422.322.122.021.821.621.521.321.221.020.924.023.723.523.423.223.022.922.722.622.422.222.121.921.821.621.521.321.124.224.023.823.723.523.323.223.022.822.722.522.322.222.021.921.721.621.424.424.324.124.023.823.623.423.323.122.922.822.622.522.322.122.021.821.724.624.624.424.224.123.923.723.623.423.223.122.922.722.622.422.322.121.924.824.924.724.524.424.224.023.823.723.523.323.223.022.822.722.522.422.225.025.225.024.824.724.524.324.124.023.823.623.523.323.123.022.822.622.525.225.525.325.124.924.824.624.424.224.123.923.723.623.423.223.122.922.725.425.825.625.425.225.124.924.724.524.424.224.023.823.723.523.323.223.025.626.125.925.725.525.425.225.024.824.624.524.324.124.023.823.623.423.325.826.426.226.025.825.725.525.325.124.924.824.624.424.224.123.923.723.526.026.726.526.326.125.925.825.625.425.225.024.924.724.524.324.224.023.826.227.026.826.626.426.226.125.925.725.525.325.125.024.824.624.424.324.126.427.327.126.926.726.526.426.226.025.825.625.425.325.124.924.724.524.426.627.627.427.227.026.826.726.526.326.125.925.725.525.425.225.024.824.626.827.927.727.527.327.127.026.826.626.426.226.025.825.625.525.325.124.927.028.228.027.827.627.427.327.126.926.726.526.326.125.925.725.625.425.227.228.628.328.127.927.727.627.427.227.026.826.626.426.226.025.825.725.527.428.928.728.528.328.127.927.727.527.327.126.926.726.526.326.125.925.727.629.229.028.828.628.428.228.027.827.627.427.227.026.826.626.426.226.027.829.529.329.128.928.728.528.328.127.927.727.527.327.126.926.726.526.328.029.829.629.429.229.028.828.628.428.228.027.827.627.427.227.026.826.628.230.129.929.729.529.329.128.928.728.528.328.127.927.727.527.327.126.928.430.430.230.029.829.629.429.229.028.828.628.328.127.927.727.527.427.228.630.830.530.330.129.929.729.529.329.128.828.628.4DB11/T1446-2017A17平均回弹值测区混凝土强度换算值（MPa）平均碳化深度值（mm）0.00.51.01.52.02.53.03.54.04.55.05.56.06.57.07.522.822.021.821.721.521.321.221.020.920.720.620.520.320.220.019.919.719.623.022.322.121.921.821.621.521.321.221.020.920.720.620.420.320.120.019.923.222.522.422.222.121.921.821.621.421.321.121.020.820.720.520.420.320.123.422.822.722.522.322.222.021.921.721.621.421.321.121.020.820.720.520.423.623.123.022.822.622.522.322.222.021.821.721.521.421.221.120.920.820.623.823.423.223.122.922.822.622.422.322.122.021.821.621.521.321.221.020.924.023.723.523.423.223.022.922.722.622.422.222.121.921.821.621.521.321.124.224.023.823.723.523.323.223.022.822.722.522.322.222.021.921.721.621.424.424.324.124.023.823.623.423.323.122.922.822.622.522.322.122.021.821.724.624.624.424.224.123.923.723.623.423.223.122.922.722.622.422.322.121.924.824.924.724.524.424.224.023.823.723.523.323.223.022.822.722.522.422.225.025.225.024.824.724.524.324.124.023.823.623.523.323.123.022.822.622.525.225.525.325.124.924.824.624.424.224.123.923.723.623.423.223.122.922.725.425.825.625.425.225.124.924.724.524.424.224.023.823.723.523.323.223.025.626.125.925.725.525.425.225.024.824.624.524.324.124.023.823.623.423.325.826.426.226.025.825.725.525.325.124.924.824.624.424.224.123.923.723.526.026.726.526.326.125.925.825.625.425.225.024.924.724.524.324.224.023.826.227.026.826.626.426.226.125.925.725.525.325.125.024.824.624.424.324.126.427.327.126.926.726.526.426.226.025.825.625.425.325.124.924.724.524.426.627.627.427.227.026.826.726.526.326.125.925.725.525.425.225.024.824.626.827.927.727.527.327.127.026.826.626.426.226.025.825.625.525.325.124.927.028.228.027.827.627.427.327.126.926.726.526.326.125.925.725.625.425.227.228.628.328.127.927.727.627.427.227.026.826.626.426.226.025.825.725.527.428.928.728.528.328.127.927.727.527.327.126.926.726.526.326.125.925.727.629.229.028.828.628.428.228.027.827.627.427.227.026.826.626.426.226.027.829.529.329.128.928.728.528.328.127.927.727.527.327.126.926.726.526.328.029.829.629.429.229.028.828.628.428.228.027.827.627.427.227.026.826.628.230.129.929.729.529.329.128.928.728.528.328.127.927.727.527.327.126.928.430.430.230.029.829.629.429.229.028.828.628.328.127.927.727.527.427.228.630.830.530.330.129.929.729.529.329.128.828.628.428.228.027.827.627.4A18平均回弹值测区混凝土强度换算值（MPa）平均碳化深度值（mm）0.00.51.01.52.02.53.03.54.04.55.05.56.06.57.07.528.831.130.930.630.430.230.029.829.629.429.228.928.728.528.328.127.927.729.031.431.231.030.730.530.330.129.929.729.529.229.028.828.628.428.228.029.231.731.531.331.130.830.630.430.230.029.829.529.329.128.928.728.528.329.432.131.831.631.431.130.930.730.530.330.129.829.629.429.229.028.828.629.632.432.131.931.731.531.231.030.830.630.430.129.929.729.529.329.128.929.832.732.532.232.031.831.631.331.130.930.730.430.230.029.829.629.429.230.033.032.832.632.332.131.931.631.431.231.030.830.530.330.129.929.729.530.233.433.132.932.632.432.232.031.731.531.331.130.830.630.430.230.029.830.433.733.433.233.032.732.532.332.031.831.631.431.130.930.730.530.330.030.634.033.833.533.333.132.832.632.432.131.931.731.431.231.030.830.630.330.834.334.133.933.633.433.132.932.732.432.232.031.831.531.331.130.930.631.034.734.434.233.933.733.533.233.032.832.532.332.131.831.631.431.230.931.235.034.834.534.334.033.833.533.333.132.832.632.432.131.931.731.531.231.435.335.134.834.634.434.133.933.633.433.132.932.732.432.232.031.831.531.635.735.435.234.934.734.434.233.933.733.533.233.032.832.532.332.131.831.836.035.835.535.335.034.834.534.334.033.833.533.333.132.832.632.432.132.036.436.135.835.635.335.134.834.634.334.133.833.633.433.132.932.732.432.236.736.436.235.935.735.435.234.934.734.434.233.933.733.433.233.032.732.437.036.836.536.236.035.735.535.235.034.734.534.234.033.733.533.333.032.637.437.136.836.636.336.135.835.635.335.034.834.534.334.133.833.633.332.837.737.437.236.936.736.436.135.935.635.435.134.934.634.434.133.933.633.038.137.837.537.237.036.736.536.235.935.735.435.234.934.734.434.233.933.238.438.137.937.637.337.136.836.536.336.035.835.535.235.034.734.534.333.438.738.538.237.937.737.437.136.936.636.336.135.835.635.335.134.834.633.639.138.838.538.338.037.737.437.236.936.736.436.135.935.635.435.134.933.839.439.238.938.638.338.137.837.537.237.036.736.536.235.935.735.435.234.039.839.539.238.938.738.438.137.837.637.337.036.836.536.336.035.735.534.240.139.839.639.339.038.738.438.237.937.637.437.136.836.636.336.135.834.440.540.239.939.639.339.138.838.538.238.037.737.437.236.936.636.436.134.640.840.540.340.039.739.439.138.838.638.338.037.7A18平均回弹值测区混凝土强度换算值（MPa）平均碳化深度值（mm）0.00.51.01.52.02.53.03.54.04.55.05.56.06.57.07.528.831.130.930.630.430.230.029.829.629.429.228.928.728.528.328.127.927.729.031.431.231.030.730.530.330.129.929.729.529.229.028.828.628.428.228.029.231.731.531.331.130.830.630.430.230.029.829.529.329.128.928.728.528.329.432.131.831.631.431.130.930.730.530.330.129.829.629.429.229.028.828.629.632.432.131.931.731.531.231.030.830.630.430.129.929.729.529.329.128.929.832.732.532.232.031.831.631.331.130.930.730.430.230.029.829.629.429.230.033.032.832.632.332.131.931.631.431.231.030.830.530.330.129.929.729.530.233.433.132.932.632.432.232.031.731.531.331.130.830.630.430.230.029.830.433.733.433.233.032.732.532.332.031.831.631.431.130.930.730.530.330.030.634.033.833.533.333.132.832.632.432.131.931.731.431.231.030.830.630.330.834.334.133.933.633.433.132.932.732.432.232.031.831.531.331.130.930.631.034.734.434.233.933.733.533.233.032.832.532.332.131.831.631.431.230.931.235.034.834.534.334.033.833.533.333.132.832.632.432.131.931.731.531.231.435.335.134.834.634.434.133.933.633.433.132.932.732.432.232.031.831.531.635.735.435.234.934.734.434.233.933.733.533.233.032.832.532.332.131.831.836.035.835.535.335.034.834.534.334.033.833.533.333.132.832.632.432.132.036.436.135.835.635.335.134.834.634.334.133.833.633.433.132.932.732.432.236.736.436.235.935.735.435.234.934.734.434.233.933.733.433.233.032.732.437.036.836.536.236.035.735.535.235.034.734.534.234.033.733.533.333.032.637.437.136.836.636.336.135.835.635.335.034.834.534.334.133.833.633.332.837.737.437.236.936.736.436.135.935.635.435.134.934.634.434.133.933.633.038.137.837.537.237.036.736.536.235.935.735.435.234.934.734.434.233.933.238.438.137.937.637.337.136.836.536.336.035.835.535.235.034.734.534.333.438.738.538.237.937.737.437.136.936.636.336.135.835.635.335.134.834.633.639.138.838.538.338.037.737.437.236.936.736.436.135.935.635.435.134.933.839.439.238.938.638.338.137.837.537.237.036.736.536.235.935.735.435.234.039.839.539.238.938.738.438.137.837.637.337.036.836.536.336.035.735.534.240.139.839.639.339.038.738.438.237.937.637.437.136.836.636.336.135.834.440.540.239.939.639.339.138.838.538.238.037.737.437.236.936.636.436.134.640.840.540.340.039.739.439.138.838.638.338.037.737.537.236.936.736.4DB11/T1446-2017A19平均回弹值测区混凝土强度换算值（MPa）平均碳化深度值（mm）0.00.51.01.52.02.53.03.54.04.55.05.56.06.57.07.534.841.240.940.640.340.039.739.539.238.938.638.338.137.837.537.337.036.735.041.541.240.940.740.440.139.839.539.238.938.738.438.137.937.637.337.135.241.941.641.341.040.740.440.139.839.639.339.038.738.438.237.937.637.435.442.241.941.641.341.140.840.540.239.939.639.339.138.838.538.238.037.735.642.642.342.041.741.441.140.840.540.239.939.739.439.138.838.538.338.035.843.042.642.342.041.741.441.240.940.640.340.039.739.439.138.938.638.336.043.343.042.742.442.141.841.541.240.940.640.340.039.839.539.238.938.636.243.743.443.042.742.442.141.841.541.241.040.740.440.139.839.539.239.036.444.043.743.443.142.842.542.241.941.641.341.040.740.440.139.839.639.336.644.444.143.843.443.142.842.542.241.941.641.341.040.740.540.239.939.636.844.744.444.143.843.543.242.942.642.342.041.741.441.140.840.540.239.937.045.144.844.544.243.843.543.242.942.642.342.041.741.441.140.840.540.237.245.545.144.844.544.243.943.643.342.942.642.342.041.741.441.140.940.637.445.845.545.244.944.544.243.943.643.343.042.742.442.141.841.541.240.937.646.245.945.545.244.944.644.343.943.643.343.042.742.442.141.841.541.237.846.646.245.945.645.344.944.644.344.043.743.443.142.742.442.141.841.538.046.946.646.345.945.645.345.044.644.344.043.743.443.142.842.542.241.938.247.347.046.646.346.045.645.345.044.744.444.043.743.443.142.842.542.238.447.747.347.046.746.346.045.745.345.044.744.444.143.843.443.142.842.538.648.047.747.447.046.746.446.045.745.445.044.744.444.143.843.543.242.938.848.448.147.747.447.046.746.446.045.745.445.144.844.444.143.843.543.239.048.848.448.147.747.447.146.746.446.145.745.445.144.844.544.143.843.539.249.248.848.548.147.847.447.146.846.446.145.845.445.144.844.544.243.839.449.549.248.848.548.147.847.447.146.846.446.145.845.545.144.844.544.239.649.949.549.248.848.548.247.847.547.146.846.546.145.845.545.244.844.539.850.349.949.649.248.948.548.247.847.547.146.846.546.145.845.545.244.840.050.750.349.949.649.248.948.548.247.847.547.246.846.546.245.845.545.240.251.050.750.349.949.649.248.948.548.247.947.547.246.846.546.245.845.540.451.451.050.750.350.049.649.348.948.648.247.947.547.246.946.546.245.940.651.851.451.150.750.350.049.649.348.948.648.247.9DB11/T1446-2017A19平均回弹值测区混凝土强度换算值（MPa）平均碳化深度值（mm）0.00.51.01.52.02.53.03.54.04.55.05.56.06.57.07.534.841.240.940.640.340.039.739.539.238.938.638.338.137.837.537.337.036.735.041.541.240.940.740.440.139.839.539.238.938.738.438.137.937.637.337.135.241.941.641.341.040.740.440.139.839.639.339.038.738.438.237.937.637.435.442.241.941.641.341.140.840.540.239.939.639.339.138.838.538.238.037.735.642.642.342.041.741.441.140.840.540.239.939.739.439.138.838.538.338.035.843.042.642.342.041.741.441.240.940.640.340.039.739.439.138.938.638.336.043.343.042.742.442.141.841.541.240.940.640.340.039.839.539.238.938.636.243.743.443.042.742.442.141.841.541.241.040.740.440.139.839.539.239.036.444.043.743.443.142.842.542.241.941.641.341.040.740.440.139.839.639.336.644.444.143.843.443.142.842.542.241.941.641.341.040.740.540.239.939.636.844.744.444.143.843.543.242.942.642.342.041.741.441.140.840.540.239.937.045.144.844.544.243.843.543.242.942.642.342.041.741.441.140.840.540.237.245.545.144.844.544.243.943.643.342.942.642.342.041.741.441.140.940.637.445.845.545.244.944.544.243.943.643.343.042.742.442.141.841.541.240.937.646.245.945.545.244.944.644.343.943.643.343.042.742.442.141.841.541.237.846.646.245.945.645.344.944.644.344.043.743.443.142.742.442.141.841.538.046.946.646.345.945.645.345.044.644.344.043.743.443.142.842.542.241.938.247.347.046.646.346.045.645.345.044.744.444.043.743.443.142.842.542.238.447.747.347.046.746.346.045.745.345.044.744.444.143.843.443.142.842.538.648.047.747.447.046.746.446.045.745.445.044.744.444.143.843.543.242.938.848.448.147.747.447.046.746.446.045.745.445.144.844.444.143.843.543.239.048.848.448.147.747.447.146.746.446.145.745.445.144.844.544.143.843.539.249.248.848.548.147.847.447.146.846.446.145.845.445.144.844.544.243.839.449.549.248.848.548.147.847.447.146.846.446.145.845.545.144.844.544.239.649.949.549.248.848.548.247.847.547.146.846.546.145.845.545.244.844.539.850.349.949.649.248.948.548.247.847.547.146.846.546.145.845.545.244.840.050.750.349.949.649.248.948.548.247.847.547.246.846.546.245.845.545.240.251.050.750.349.949.649.248.948.548.247.947.547.246.846.546.245.845.540.451.451.050.750.350.049.649.348.948.648.247.947.547.246.946.546.245.940.651.851.451.150.750.350.049.649.348.948.648.247.947.547.246.946.546.2A20平均回弹值测区混凝土强度换算值（MPa）平均碳化深度值（mm）0.00.51.01.52.02.53.03.54.04.55.05.56.06.57.07.540.852.251.851.451.150.750.350.049.649.348.948.648.247.947.547.246.946.541.052.552.251.851.451.150.750.350.049.649.348.948.648.247.947.547.246.941.252.952.552.251.851.451.150.750.350.049.649.348.948.648.247.947.647.241.453.352.952.652.251.851.451.150.750.350.049.649.348.948.648.247.947.641.653.753.352.952.652.251.851.451.150.750.450.049.649.348.948.648.247.941.854.153.753.352.952.652.251.851.451.150.750.450.049.649.348.948.648.242.054.554.153.753.352.952.652.251.851.451.150.750.350.049.649.348.948.642.254.854.554.153.753.352.952.552.251.851.451.150.750.350.049.649.348.942.455.254.854.554.153.753.352.952.552.251.851.451.150.750.350.049.649.342.655.655.254.854.454.153.753.352.952.552.251.851.451.150.750.350.049.642.856.055.655.254.854.454.053.753.352.952.552.251.851.451.050.750.350.043.056.456.055.655.254.854.454.053.753.352.952.552.151.851.451.050.750.343.256.856.456.055.655.254.854.454.053.653.352.952.552.151.851.451.050.743.457.256.856.456.055.655.254.854.454.053.653.252.952.552.151.751.451.043.657.657.256.856.456.055.655.254.854.454.053.653.252.852.552.151.751.443.858.057.657.156.756.355.955.555.154.754.454.053.653.252.852.552.151.744.058.457.957.557.156.756.355.955.555.154.754.354.053.653.252.852.452.144.258.858.357.957.557.156.756.355.955.555.154.754.353.953.553.252.852.444.459.158.758.357.957.557.156.756.355.955.555.154.754.353.953.553.152.844.659.559.158.758.357.957.557.056.656.255.855.455.054.754.353.953.553.144.859.959.559.158.758.357.857.457.056.656.255.855.455.054.654.253.953.545.0-59.959.559.158.658.257.857.457.056.656.255.855.455.054.654.253.845.2--59.959.559.058.658.257.857.457.056.656.255.855.455.054.654.245.4---59.859.459.058.658.257.757.356.956.556.155.755.354.954.545.6----59.859.459.058.558.157.757.356.956.556.155.755.354.945.8-----59.859.358.958.558.157.757.356.956.556.155.755.346.0------59.759.358.958.558.157.657.256.856.456.055.646.2-------59.759.358.858.458.057.657.256.856.456.046.4--------59.659.258.858.458.057.657.156.756.346.6---------59.659.258.8A20平均回弹值测区混凝土强度换算值（MPa）平均碳化深度值（mm）0.00.51.01.52.02.53.03.54.04.55.05.56.06.57.07.540.852.251.851.451.150.750.350.049.649.348.948.648.247.947.547.246.946.541.052.552.251.851.451.150.750.350.049.649.348.948.648.247.947.547.246.941.252.952.552.251.851.451.150.750.350.049.649.348.948.648.247.947.647.241.453.352.952.652.251.851.451.150.750.350.049.649.348.948.648.247.947.641.653.753.352.952.652.251.851.451.150.750.450.049.649.348.948.648.247.941.854.153.753.352.952.652.251.851.451.150.750.450.049.649.348.948.648.242.054.554.153.753.352.952.652.251.851.451.150.750.350.049.649.348.948.642.254.854.554.153.753.352.952.552.251.851.451.150.750.350.049.649.348.942.455.254.854.554.153.753.352.952.552.251.851.451.150.750.350.049.649.342.655.655.254.854.454.153.753.352.952.552.251.851.451.150.750.350.049.642.856.055.655.254.854.454.053.753.352.952.552.251.851.451.050.750.350.043.056.