DB45∕T 1828-2018 海港工程混凝土材料与结构耐久性定量设计规范

DB45海港工程混凝土材料与结构耐久性定量设计规范Codeforquantitativedurabilitydesignofconcretematerialsandstructuresforharbourengineering广西壮族自治区质量技术监督局发布I III 1 1 1 3 3 44.3其他要求 4 4 4 4 5 7 8 8 9 9 9 8.2初始氯离子扩散系数配制值的确定 9.4胶凝材料、矿物掺合料和水泥用量 9.5砂率 II III本标准主要起草人：杨绿峰、朱卫国、吴信、陈正、余波、李毅男、李秀英、黄士奎、林增海、陆宏健、赵家琦、王胜年、王建军、熊建波、范志宏、蔡荣、张福征、欧孝夺、陈旺、陆峰、谢涛、1海港工程混凝土材料与结构耐久性定量设计规范3.123.23.33.43.53.63.7氯离子浓度chlorideconc3.8初始氯离子浓度initialchlorideconcentration3.9临界氯离子浓度criticalchlorideconcentration3.10表面氯离子浓度surfacechlorideconcentration3.11设计使用年限designservicelife33.12氯离子扩散系数chloridediffusioncoefficient3.13初始龄期initialage3.14初始氯离子扩散系数initialchloridediffusioncoefficient3.153.163.173.183.193.204.1混凝土结构耐久性定量设计的内容44.2混凝土配合比设计的要求4.3其他要求5.1一般规定5.1.1混凝土的原材料包括水泥、矿物掺合料、粗骨料、细骨料、拌合水和外加剂等，原材料中的有5.1.3混凝土配合比设计应采用工程实际使用的原材料。5.2矿物掺合料需水量比(%)烧失量(%)≤5≤8含水率(%)≤1.0氯离子含量(%)≤0.02三氧化硫含量(%)≤3.0氧化钙含量(%)5游离氧化钙含量(%)≤1.0流动度比(%)烧失量(%)≤3.0含水率(%)≤1.0氯离子含量(%)≤0.02三氧化硫含量(%)≤4.05.3骨料5.3.1细骨料应采用河砂、机制砂或混合砂；不宜使用海砂，如需使用，应采用经氯离子检验合格的≤2.0≤3.0≤5.0≤0.5≤1.0<2.0≤2.0≤1.0≤1.0颜色不应深于标准色，当深于标准色时，应采用水泥胶砂法进行砂浆强度对比试6石粉含量(%)≤5.0≤7.0≤10.0≤2.0≤3.0≤5.05.3.2粗骨料应采用质地坚硬的碎石、卵石或碎石与卵石的混合物，不得采用碱活性粗骨料，其强度≤8压碎指标(%)≤87注1：针片状颗粒是指颗粒的长度大于该颗粒所属粒级的平均粒径2.4倍注3：用卵石或卵石与碎石混合物配制受拉、受弯构件的混凝土时，应进行混凝土的抗拉强度试验；试验结果不合≤0.5≤1.0≤2.0≤0.2≤0.5≤0.7≤1.0注3：含泥基本是非粘土质的石粉时，混凝土所用粗5.4拌合用水和外加剂5.4.1混凝土拌合用水的质量应符合表9的规定，宜采用饮用水，不得使用影响水泥正常凝结、硬化>5.0>4.5EQ\*jc3\*hps9\o\al(\s\up4(2),4)-86.1环境作用等级的划分6.1.1根据海洋氯化物环境对混凝土结构的腐蚀严重程度，可以将海洋氯化物环境划分为水下区、水按港工设计水位变动区下界浪溅区下界至设计低水大气区下界至设计高设计高水位加1.5m以上按港工设计水位变动区下界浪溅区下界至设计低水大气区下界至设计高水位减η0之间水位变动区下界浪溅区下界至最低天文潮位减0.2倍百年一遇有1/3之间大气区下界至最高天文潮位减百年一遇有1/3之间最高天文潮位加0.7倍百年一遇有效波高H1/3注3：有掩护条件是指具有良好天然掩护或人工掩护水域内的海工结构；无掩护条件是指开敞式、无防波堤或天然6.1.2海洋氯化物环境对配筋混凝土结96.2环境作用等级的量化5.53.52.62.45.23.67.1.1海洋氯化物环境下混凝土结构的耐久性设计，应控制氯离子引起的钢筋锈蚀。7.1.2对于海洋氯化物环境下混凝土结构的耐久性设计，应将混凝土净保护层厚度c、初始氯离子扩7.1.3对于海洋氯化物环境下混凝土结构的耐久性定量设计，宜按照以下步骤进行：d)根据7.1.6、7.1.7和7.1.8确定混凝土净保护层厚度e)根据7.1.9，从耐久性设计参数的备选组合中确定混凝土净保护层厚度c、初始氯离子扩散系7.1.5对于硅酸盐水泥混凝土，龄期衰减系数n取0.23；对于掺加矿物7.1.6混凝土结构的耐久性定量设计，应考虑结构几何外形对混凝土中氯离子扩散维数的影响。对于Cl-Cl-Cl-一维(1D)和无(一维(1D)和无(ND)扩散区二维(2D)和三维(3D)扩散区7.1.9当环境作用等级为L1、L2、L3和L4时，初始氯离子扩散系数D0的备选值分别不宜大于10.0×10-127.2结构耐久性定量分析和设计7.2.2对于一维扩散区的混凝土结构，混凝土净保护层厚度c、龄期衰减系数n与初始氯离子∙)——误差函数erf∙)的反函数。7.2.3对于二维扩散区的混凝土结构，需要考虑角部箍筋弯折引起的附加保护层厚度的有利影响，混................................7.2.4对于三维扩散区的混凝土结构，混凝土净保护7.2.5对于同时存在不同扩散维数区域、且需要采用相同的混凝土进行同时浇筑的混凝土结构，应按cn-122/s-122/s-122/s-122/s0.70.46.02.87.93.72.96.73.82.00.57.83.74.92.86.73.88.74.92.22.50.69.84.62.6cn-122/s-122/s-122/s-122/s3.58.54.86.22.70.85.73.27.64.35.97.73.33.70.96.93.99.25.27.29.33.94.42.28.24.76.28.54.65.22.69.75.57.35.36.03.06.38.46.93.47.39.7cn-122/s-122/s-122/s-122/s0.90.60.45.63.92.37.45.22.07.24.32.89.45.63.60.80.55.03.09.46.63.92.65.43.57.04.60.68.73.62.44.83.26.74.38.75.72.00.77.44.42.99.95.83.88.05.36.82.30.88.85.23.46.94.59.66.32.52.74.05.37.39.52.93.24.79.46.28.53.33.62.28.25.39.83.82.59.3cn-122/s-122/s-122/s-122/s0.70.44.32.55.73.42.27.84.73.04.00.90.57.75.43.24.22.89.85.83.87.65.00.69.46.63.92.58.75.23.44.79.30.87.94.76.28.65.67.32.32.50.99.35.53.67.44.86.68.62.62.96.54.28.65.67.73.03.32.07.54.99.96.58.93.53.82.38.55.67.43.94.32.69.76.38.40限值cn-122/s-122/s-122/s-122/s0.70.46.64.72.88.86.23.72.48.55.03.36.64.30.90.58.25.83.42.27.74.63.06.38.25.30.77.04.22.79.35.53.67.65.09.96.52.02.20.88.45.03.36.64.35.97.72.42.60.99.95.93.87.87.02.83.06.84.59.05.93.23.57.86.89.43.64.02.48.95.87.84.52.76.68.80限值cn-122/s-122/s-122/s-122/s0.80.57.25.03.02.09.56.74.02.69.25.53.64.60.68.86.23.72.48.24.93.26.74.48.85.72.00.77.54.42.99.95.93.95.36.92.30.88.95.33.57.04.69.76.38.22.52.76.24.08.25.47.49.62.93.27.24.79.56.28.63.33.62.28.25.49.83.82.59.34.34.72.96.90限值cn-122/s-122/s-122/s-122/s0.90.57.75.43.27.24.32.89.95.93.97.75.00.69.56.63.92.68.85.23.47.24.79.40.88.04.76.38.65.77.42.32.50.99.45.63.77.44.96.78.72.62.96.54.38.75.77.83.32.07.54.96.59.03.53.82.38.65.67.54.04.32.69.86.48.54.54.93.07.29.50限值cn-122/s-122/s-122/s-122/s0.90.68.35.83.52.37.84.63.06.38.35.40.74.22.89.45.63.77.75.06.52.02.20.88.55.03.36.74.49.26.07.82.42.60.95.93.97.89.22.83.06.94.56.08.23.23.57.95.26.99.43.74.02.49.05.97.84.52.86.78.84.67.59.98.1混凝土强度配制值的确定8.1.1混凝土强度配制值应按下列规定确定：fcu,0=fcu,k+1.645σf..........................................................................8.1.2混凝土强度标准差应按下列规定确定：3.54.55.58.2初始氯离子扩散系数配制值的确定σσD....................................2/a2/a9基于强度和耐久性指标的混凝土配合比设计9.1一般规定9.1.1混凝土配合比设计应重点满足混凝土强度和耐久性能的设计要求，同时应满足拌合物性能、力≤0.459.1.3矿物掺合料在混凝土中的掺量可以根据本标准定量计算确定。采用硅酸盐水泥或普通硅酸盐水最大掺量(%)≤0.40>0.40≤0.40>0.40≤0.40>0.409.2水胶比和矿物掺合料掺量9.2.1对于混凝土强度等级小于等标准值fcu,k、龄期衰减系数n和初始氯离子扩散EQ\*jc3\*hps12\o\al(\s\up5(2),S) FA..............................FA..............................(pEQ\*jc3\*hps12\o\al(\s\up4(2),1)....................................(p2=EQ\*jc3\*hps12\o\al(\s\up4(3),1).................................(EQ\*jc3\*hps12\o\al(\s\up4(4),1)EQ\*jc3\*hps12\o\al(\s\up4(2),1)............................( bαb.................(.................(2−2b−4b−4−4−2αbb3+bpp2α9.2.3对于混凝土强度等级小于等于C50、掺粉煤灰和粒化高炉矿渣粉的混凝土，如9.2.4对于混凝土强度等级大于9.3用水量和外加剂用量9.3.1每立方米干硬性或塑性混注1：本表用水量系采用中砂时的取值。采用细砂时，每立方米混凝土用9.3.2掺外加剂时，每立方米流动性或大流动性混凝土的用水量EQ\*jc3\*hps20\o\al(\s\up0(′),w)...................................EQ\*jc3\*hps21\o\al(\s\up0(′),w)9.3.3每立方米混凝土中外加剂用量应按式（26）计算：.....................................9.4胶凝材料、矿物掺合料和水泥用量...............................................................................................................9.5砂率9.5.1砂率βs应根据骨料的技术指标、混凝土拌合物性能和施工要求，参考既有历史资料确定。9.5.2当缺乏砂率的历史资料时，混凝土砂率的确定应符合下列规定：9.6粗、细骨料用量9.6.1当采用质量法计算混凝土配合比时，粗、细骨料用量应按式（30）计算；砂率应..............................s——砂率(%);3。9.6.2当采用体积法计算混凝土配合比时，砂率应按式（31）计算，粗、细骨料用量应3；9.7混凝土配合比设计步骤基于强度和耐久性指标的混凝土配合比设计，数配制值，利用9.2.1计算确定混凝土的水胶比和矿物掺合料掺量；e)根据混凝土的工作性能要求，利用9.3.1、9.3.2和9.3.3确定用水量和外加剂用量；f)根据步骤d确定的水胶比和矿物掺合料掺量，以及步骤e确定的用水量，利用9.4.1、9.4.2和9.4.3确定胶凝材料、矿物掺合料和水泥用量；h)根据9.6.1或9.6.2，利用质量法或体积法计算混凝土的粗、细骨料用量。10.1.1混凝土试配应采用符合JG244规定的强制≤31.510.1.5在试拌配合比的基础上应进行混凝土强度和氯离子扩散系数试验，并应符合下列规定：10.2.2混凝土拌合物表观密度和配合比校正系数的计算应符合下列规定：...............................33333.......................................10.2.3当混凝土拌合物表观密度实测值与计算值之10.2.5生产单位可根据常用材料设计出常用的混凝土配合比备用，并应在启用过程中予以验证或调a)选用连续级配的粗骨料，其针片状颗粒含量≤10％，粗骨料最大粒径与输送管径之比符合表≤1:3.0≤1:2.5b)泵送混凝土最小胶凝材料用量根据管径、距离％～11.3.2采用微膨胀水泥或掺用膨胀剂时，应通过试验确定用量或掺量。11.3.3在配合比确定后应进行水化热的验算或混凝土绝热温升的测定。D0×10-122/s2/a0.50.270.020.59/////////0.290.040.55/////////47.30.290.070.52/////////2.00.300.090.49//////2.50.300.460.030.49//////3.094.60.300.130.430.320.040.47//////3.50.300.150.400.320.060.44//////4.00.180.360.320.080.42//////4.50.300.320.320.090.39//////5.0///0.330.370.350.42///5.5///0.330.130.340.350.020.40///6.0///0.320.160.350.040.38///6.5///0.320.190.260.350.050.36///7.0//////0.350.070.34///7.5//////0.350.08///8.0//////0.350.100.29///8.5//////0.340.120.260.370.339.0//////0.340.160.370.03/////////0.370.060.26/////////0.360.080.24/////////0.360.100.20D0×10-122/s2/a0.020.58/////////47.30.320.040.56/////////2.00.320.050.53/////////2.50.330.07/////////3.094.60.330.080.490.35//////3.50.330.100.470.350.020.50//////4.00.340.450.350.040.48//////4.50.340.130.430.360.050.46//////5.00.340.140.360.060.44//////5.50.340.160.390.360.070.43//////6.00.340.180.360.360.08//////6.50.340.190.340.360.100.39//////7.00.340.220.360.370.39///7.50.330.240.270.360.120.360.390.020.40///8.0///0.360.140.330.390.030.39///8.5///0.360.150.390.040.37///9.0///0.360.170.290.390.050.35///9.5///0.360.190.260.390.070.34//////0.350.230.390.080.32/////////0.390.090.30/////////0.390.100.280.33//////0.390.120.260.020.32//////0.380.140.240.03//////0.380.160.040.29//////0.370.200.150.050.27/////////0.070.25/////////0.400.10/////////0.400.120.18/////////0.390.150.14D0×10-122/s2/a47.30.340.020.58//////2.00.350.040.56//////2.50.350.050.54//////3.094.60.360.060.53//////3.50.360.07//////4.00.360.080.490.38///4.50.370.100.480.380.020.50///5.00.370.460.390.030.48///5.50.370.120.450.390.040.47///6.00.370.130.430.390.050.46///6.50.370.140.390.060.44///7.00.370.150.400.400.070.43///7.50.370.170.380.400.08///8.00.370.180.360.400.090.40///8.50.370.190.340.400.100.390.420.429.00.370.320.400.370.430.029.50.370.220.300.400.120.360.430.020.40D0×10-122/s2/a0.370.240.270.400.130.340.430.030.38///0.360.270.230.400.140.320.430.040.37//////0.400.160.430.050.36//////0.400.170.290.430.060.35//////0.390.190.270.430.070.33//////0.390.200.240.430.080.32//////0.380.230.430.09/////////0.430.100.290.450.33//////0.420.270.450.020.32//////0.420.120.260.450.03//////0.420.140.240.450.040.30//////0.420.150.220.450.050.28//////0.170.190.450.050.27//////0.400.200.150.450.070.26/////////0.450.080.24/////////0.440.090.23/////////0.440.10/////////0.440.120.19/////////0.430.130.16/////////0.420.160.12D0×10-122/s2/a2.00.380.020.58//////2.50.380.030.57//////3.094.60.390.040.55//////3.50.390.050.54//////4.00.400.060.52//////4.50.400.07//////5.00.400.080.500.42///5.50.400.090.490.420.020.50///6.00.100.470.430.030.49///6.50.460.430.030.48///7.00.120.450.430.040.47///7.50.120.440.430.050.46///8.00.130.420.440.060.45///8.50.140.440.060.44///9.00.150.400.440.070.43///9.50.160.380.440.08///0.170.370.440.090.40///0.180.360.440.100.390.470.420.190.340.440.100.380.470.200.320.440.370.470.020.400.220.440.120.360.470.030.390.230.290.440.130.340.470.030.380.240.270.440.140.330.470.040.370.400.260.240.440.150.320.470.050.360.400.290.440.160.300.470.060.35D0×10-122/s2/a0.440.170.290.470.060.34///0.440.180.270.470.070.33///0.430.190.260.470.080.32///0.430.240.470.09///0.430.220.470.100.300.500.330.420.240.180.470.100.280.500.020.32///0.470.270.500.02///0.470.120.260.500.030.30///0.470.130.240.500.040.29///0.460.140.230.500.050.28///0.460.160.500.050.2720.0///0.460.170.190.500.060.2620.5///0.450.190.170.500.070.2521.0///0.440.130.490.080.2421.5//////0.490.090.2222.0//////0.490.1022.5//////0.490.1923.0//////0.480.120.1823.5//////0.480.130.1624.0//////0.470.150.1324.5//////0.460.180.10D0×10-122/s2/a2.50.420.020.58//////3.094.60.430.030.57//////3.50.430.040.56//////4.00.440.040.55//////4.50.440.050.54//////5.00.440.060.53//////5.50.450.070.52//////6.00.450.070.470.52///6.50.450.080.500.47///7.00.450.090.490.480.020.50///7.50.460.090.480.480.020.49///8.00.460.100.470.480.030.48///8.50.460.460.480.040.48///9.00.460.120.450.480.040.47///9.50.460.120.440.490.050.46///0.460.130.430.490.060.45///0.460.140.420.490.060.44///0.460.140.490.070.43///0.460.150.400.490.070.42///0.470.160.390.490.08///0.470.170.380.490.09///0.470.170.370.490.090.400.520.420.460.180.350.490.100.390.530.460.190.340.500.380.530.020.460.200.330.500.370.530.020.400.460.320.500.120.360.530.030.390.460.220.500.130.350.530.030.380.460.230.290.490.130.340.530.040.370.460.240.280.490.140.330.530.050.370.450.250.260.490.150.320.530.050.360.450.260.240.490.160.530.060.350.450.280.220.490.170.300.530.060.340.440.300.200.490.170.280.530.070.330.430.330.150.490.180.270.530.080.320.490.190.260.530.08///20.00.480.200.240.530.090.30///20.50.480.230.530.100.300.560.33D0×10-122/s2/a21.00.480.220.530.100.290.560.020.3221.50.470.240.190.530.280.560.0222.00.470.260.170.520.120.260.560.030.3022.50.460.280.130.520.130.250.560.040.3023.0///0.520.130.240.560.040.2923.5///0.520.140.230.560.050.2824.0///0.520.150.220.560.060.2724.5///0.160.200.560.060.2625.0///0.170.190.550.070.25D0×10-122/s2/a0.50.280.020.58/////////0.290.050.54/////////47.30.290.080.50/////////2.00.300.100.470.020.50//////2.50.300.120.440.320.040.47//////3.094.60.300.150.400.320.060.45//////3.50.180.370.320.070.42//////D0×10-122/s////////////////////////////////////////////////////////////////////////////////////////////////D02/s//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////D0=0.67=0.54=0.48×-122/s2/a47.30.340.030.57/////////2.00.350.040.55/////////2.50.350.060.53/////////3.094.60.360.07/////////3.50.360.080.500.38//////4.00.370.100.480.380.020.50//////4.50.370.460.390.030.48//////5.00.370.120.440.390.040.47//////5.50.370.130.420.390.050.45//////6.00.370.150.400.390.070.44//////6.50.370.160.390.400.080.42//////7.00.370.180.370.400.090.40//////7.50.370.190.340.400.100.390.420.42///8.00.370.320.400.370.430.02///8.50.370.230.290.400.120.360.430.030.39///9.00.370.250.260.400.140.340.430.040.38///9.50.350.290.200.400.150.320.430.040.37//////0.400.160.300.430.060.35//////0.390.180.270.430.070.34//////0.390.200.250.430.080.32//////0.380.220.430.09/////////0.430.100.29/////////0.420.270.450.020.32//////0.420.130.250.450.03//////0.420.140.230.450.040.29//////0.160.450.050.28//////0.190.170.450.060.26/////////0.450.070.25/////////0.440.090.23/////////0.440.10/////////0.440.120.18/////////0.430.140.15/////////0.420.180.10D0×10-122/s//////////////////////////////////////////////////////////////////D0×10-122/s2/a0.440.170.290.470.070.34///0.440.190.270.470.070.33///0.430.200.250.470.08///0.430.220.220.470.090.30///0.420.240.190.470.100.290.500.020.330.280.140.470.270.500.020.32///0.470.120.260.500.030.30///0.470.130.240.500.040.29///0.460.150.220.500.050.28///0.460.160.200.500.060.27///0.450.180.180.500.070.26///0.450.200.150.490.080.24//////0.490.090.23//////0.490.1020.0//////0.490.2020.5//////0.480.120.1821.0//////0.480.140.1521.5//////0.470.160.1322.0//////0.450.200.07D0×10-122/s2/a2.00.420.020.59///2.50.420.030.58///3.094.60.430.030.56///3.50.430.040.55///4.00.440.050.54///4.50.440.060.53///5.00.450.070.52///5.50.450.080.50///6.00.450.080.490.476.50.450.090.480.480.020.507.00.460.100.470.480.030.497.50.460.460.480.040.488.00.460.120.450.480.040.478.50.460.120.440.490.050.469.00.460.130.430.490.060.459.50.460.140.420.490.060.440.460.150.400.490.070.430.460.160.390.490.080.420.470.160.380.490.090.470.170.370.490.090.40D0×-122/s2/a0.470.180.350.490.100.390.53///0.460.190.340.500.380.530.020.40///0.460.200.330.500.120.370.530.020.40///0.460.500.120.360.530.030.39///0.460.220.300.500.130.340.530.040.38///0.460.230.280.490.140.330.530.040.37///0.460.250.270.490.150.320.530.050.36///0.450.260.250.490.160.530.060.35///0.450.280.220.490.170.300.530.060.34///0.440.300.190.490.170.280.530.070.33//////0.490.180.270.530.080.32//////0.490.200.250.530.09//////0.480.240.530.090.300.560.33///0.480.220.220.530.100.290.560.020.32///0.470.230.200.530.280.560.02///0.470.250.170.530.120.270.560.0320.0///0.460.280.140.520.130.250.560.040.3020.5//////0.520.130.240.560.040.2921.0//////0.520.140.230.560.050.2821.5//////0.520.150.560.060.2722.0//////0.170.200.560.060.2622.5//////0.180.180.550.070.2523.0//////0.500.190.160.550.080.2423.5//////0.490.140.550.090.2224.0//////0.480.240.090.550.1024.5/////////0.540.2025.0/////////0.540.120.18D0×-122/s2/a0.50.280.020.58/////////0.290.050.54/////////47.30.300.080.50/////////2.00.300.460.020.49//////2.50.300.130.430.320.040.47//////3.094.60.160.390.320.060.44//////3.50.300.190.340.320.08//////4.00.300.240.270.330.38//////4.5///0.330.130.350.350.020.40///5.0///0.320.160.350.040.38///5.5///0.320.200.250.350.050.36///6.0//////0.350.070.33///6.5//////0.350.090.30///7.0//////0.350.120.260.370.337.5//////0.340.160.370.038.0/////////0.370.050.288.5/////////0.370.070.259.0/////////0.360.090.229.5/////////0.350.140.15D0×10-122/s2/a0.030.57/////////47.30.320.050.54/////////2.00.330.070.52/////////2.50.330.080.490.35//////3.094.60.340.100.470.350.030.49//////3.50.340.120.440.350.040.47//////4.00.340.140.420.360.050.45//////4.50.340.160.390.360.070.43//////5.00.340.180.360.360.08///