考虑材料参数和应力水平的氯离子扩散系数多因素预测模型

摘要/Abstract

摘要： 针对传统氯离子扩散系数预测模型无法综合考虑材料参数和外荷载影响而导致预测精度不高的缺陷,建立了综合考虑材料参数和应力水平的氯离子扩散系数多因素预测模型。首先基于311组快速氯离子迁移测试法的试验数据,定量分析了水胶比、砂率、矿物掺合料(粉煤灰、矿粉、硅灰)掺量等材料参数以及应力水平对氯离子扩散系数的影响规律;然后结合两阶段分析方法和逐步回归分析方法,建立了综合考虑材料参数和应力水平的氯离子扩散系数多因素预测模型;最后通过与传统预测模型和试验数据的对比,验证了该模型的有效性与精确性,其模型可决系数为0.90。

关键词: 混凝土, 氯离子扩散系数, 材料参数, 应力水平, 逐步回归分析, 预测模型

Abstract: In order to overcome the shortcomings of low prediction accuracy for traditional model that cannot effectively consider the effect of material parameters and external load, a multi-factor prediction model for chloride diffusion coefficient was proposed by considering material parameters and stress level. Firstly, the influences of water-binder ratio, sand ratio, mineral admixture (fly ash, slag, silica fume) and stress level on diffusion coefficient were investigated based on 311 sets of rapid chloride migration test data. Then a multi-factor prediction model for chloride diffusion coefficient was established by using the two-phase analysis method and stepwise regression method. Finally, the effectiveness and accuracy of the prediction model were verified by comparing with traditional models and experimental data. The coefficient of determination of the model is 0.90.

Key words: concrete, chloride diffusion coefficient, material parameter, stress level, stepwise regression, prediction model

中图分类号:

TU528.01

余波, 黄俊辉, 汪加梁, 秦荷成. 考虑材料参数和应力水平的氯离子扩散系数多因素预测模型[J]. 硅酸盐通报, 2022, 41(9): 3091-3099.

YU Bo, HUANG Junhui, WANG Jialiang, QIN Hecheng. Multi-Factor Prediction Model for Chloride Diffusion Coefficient Considering Material Parameters and Stress Level[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(9): 3091-3099.

参考文献

[1] 施跃毅,郭增伟,郭瑞琦.氯离子扩散系数快速测试方法综述[J].硅酸盐通报,2021,40(1):1-12.
SHI Y Y, GUO Z W, GUO R Q. Review of rapid test methods for chloride diffusion coefficient[J]. Bulletin of the Chinese Ceramic Society, 2021, 40(1): 1-12 (in Chinese).
[2] REAL S, BOGAS J A, PONTES J. Chloride migration in structural lightweight aggregate concrete produced with different binders[J]. Construction and Building Materials, 2015, 98: 425-436.
[3] 吴丽君,邓德华,曾志,等.RCM法测试混凝土氯离子渗透扩散性[J].混凝土,2006(1):100-103.
WU L J, DENG D H, ZENG Z, et al. RCM testing the penetration and diffusion of chloride ion in concrete[J]. Concrete, 2006(1): 100-103 (in Chinese).
[4] PETCHERDCHOO A. Time dependent models of apparent diffusion coefficient and surface chloride for chloride transport in fly ash concrete[J]. Construction and Building Materials, 2013, 38: 497-507.
[5] YU B, MA Q, HUANG H C, et al. Probabilistic prediction model for chloride diffusion coefficient of concrete in terms of material parameters[J]. Construction and Building Materials, 2019, 215: 941-957.
[6] 叶建雄,李晓筝,廖佳庆,等.矿物掺合料对混凝土氯离子渗透扩散性研究[J].重庆建筑大学学报,2005,27(3):89-92.
YE J X, LI X Z, LIAO J Q, et al. Study on influence of mineral admixture on chloride ion penetration and diffusion in concrete[J]. Journal of Chongqing Jianzhu University, 2005, 27(3): 89-92 (in Chinese).
[7] 吴憾.基于神经网络的混凝土抗氯离子侵蚀性能研究及寿命预测[D].广州:华南理工大学,2019.
WU H. Study on chloride ion corrosion resistance and service life prediction of concrete based on neural network[D]. Guangzhou: South China University of Technology, 2019 (in Chinese).
[8] 洪雷,危行财,汪明刚.单轴压荷载下掺合料对混凝土渗透性的影响[J].建筑材料学报,2013,16(1):143-146+152.
HONG L, WEI X C, WANG M G. Influence of mineral admixtures on permeability of concrete under sustained uniaxial compressive load[J]. Journal of Building Materials, 2013, 16(1): 143-146+152 (in Chinese).
[9] 杜修力,金浏,张仁波.压缩荷载作用下混凝土中氯离子扩散行为细观模拟[J].建筑材料学报,2016,19(1):65-71.
DU X L, JIN L, ZHANG R B. Meso-scale simulation of chloride diffusivity in concrete subjected to compressive stress[J]. Journal of Building Materials, 2016, 19(1): 65-71 (in Chinese).
[10] GUO R Q, GUO Z W, SHI Y Y. Probabilistic prediction model for the chloride diffusion coefficient of concrete under tensile and compressive stresses[J]. KSCE Journal of Civil Engineering, 2022, 26(2): 495-510.
[11] 陆晗,王卫仑,刘洪海,等.自然养护对混凝土抗压强度及氯离子扩散系数的影响[J].混凝土,2013(4):8-10+14.
LU H, WANG W L, LIU H H, et al. Effects of natural curing conditions on compressive strength and chloride ion diffusion coefficient of concrete[J]. Concrete, 2013(4): 8-10+14 (in Chinese).
[12] 杨绿峰,周明,陈正,等.混凝土中氯离子扩散系数多因素模型及试验研究[C]//第十七届中国海洋(岸)工程学术讨论会论文集(下).南宁:中国海洋工程学会,2015:555-560.
YANG L F, ZHOU M, CHEN Z, et al. Multifactor model and experimental study of chloride ion diffusion coefficient in concrete[C]//Proceedings of the 17th China Ocean (Shore) Engineering Symposium (II). Nanning: Ocean Engineering Society of China, 2015: 555-560 (in Chinese).
[13] 周华英.矿物掺合料对混凝土强度和抗氯离子扩散性能的影响[J].湘潭师范学院学报(自然科学版),2008,30(1):65-68.
ZHOU H Y. Effect of mineral admixtures on strength and chloride ion diffusion resistance of concrete[J]. Journal of Xiangtan Normal University (Natural Science Edition), 2008, 30(1): 65-68 (in Chinese).
[14] BOGAS J A, GOMES A. Non-steady-state accelerated chloride penetration resistance of structural lightweight aggregate concrete[J]. Cement and Concrete Composites, 2015, 60: 111-122.
[15] SPIESZ P, BROUWERS H J H. The apparent and effective chloride migration coefficients obtained in migration tests[J]. Cement and Concrete Research, 2013, 48: 116-127.
[16] 钱刚,姚志雄.RCM法与ASTM C1202法的相关性研究[J].福建建材,2009(5):51-53+72.
QIAN G, YAO Z X. Experimental study on comparison between the RCM and ASTM C1202 testing method for chloride ion permeability in concrete[J]. Fujian Building Materials, 2009(5): 51-53+72 (in Chinese).
[17] 汪中,吴瑾,宋永吉.单掺矿物掺合料混凝土氯离子扩散系数试验研究[C]//第八届全国混凝土耐久性学术交流会论文集. 杭州:中国土木工程学会,2012:159-164.
WANG Z, WU J, SONG Y J. Experimental study on chloride ion diffusion coefficient of concrete with single mineral admixture[C]//Proceedings of the 8th National Concrete Durability Academic Exchange Conference. Hangzhou: China Civil Engineering Society, 2012: 159-164 (in Chinese).
[18] 吴毅峰.双掺粉煤灰和矿粉的海工混凝土抗氯离子性能试验分析[J].福建建设科技,2012(3):35-37.
WU Y F. Experimental study for the chlorine ion penetration resistant performance of marine concrete mixed with fly ash and slag powder[J]. Fujian Construction Science & Technology, 2012(3): 35-37 (in Chinese).
[19] 祝鹏.养护对氯离子侵蚀环境下混凝土耐久性的影响研究[D].烟台:烟台大学,2014.
ZHU P. Influence of curing on durability of concrete under chloride ion erosion environment[D]. Yantai: Yantai University, 2014 (in Chinese).
[20] 李二菊.海工混凝土结构耐久性寿命预测评估研究[D].烟台:烟台大学,2014.
LI E J. Study on durability life prediction and evaluation of Marine concrete structures[D]. Yantai: Yantai University, 2014 (in Chinese).
[21] 张雪勤.双掺粉煤灰和矿渣混凝土的氯离子扩散机理研究[D].南京:南京工业大学,2015.
ZHANG X Q. Study on the chloride ion diffusion mechanism of fly ash and slag concrete[D]. Nanjing: Nanjing University of Technology, 2015 (in Chinese).
[22] LIU J, WANG X D, QIU Q W, et al. Understanding the effect of curing age on the chloride resistance of fly ash blended concrete by rapid chloride migration test[J]. Materials Chemistry and Physics, 2017, 196: 315-323.
[23] 徐义洪.矿物掺和料混凝土氯离子扩散性试验研究[J].黑龙江科技信息,2016(27):203-204.
XU Y H. Experimental study on chloride ion diffusivity of mineral admixture concrete[J]. Heilongjiang Science and Technology Information, 2016(27): 203-204 (in Chinese).
[24] 杨进波,WITTMANN F,赵铁军,等.混凝土氯离子扩散系数试验研究[J].建筑材料学报,2007,10(2):223-229.
YANG J B, WITTMANN F, ZHAO T J, et al. Experimental research of chloride diffusion coefficient in concrete[J]. Journal of Building Materials, 2007, 10(2): 223-229 (in Chinese).
[25] YANG C C. On the relationship between pore structure and chloride diffusivity from accelerated chloride migration test in cement-based materials[J]. Cement and Concrete Research, 2006, 36(7): 1304-1311.
[26] 李士伟,王明军,李超.基于RCM快速氯离子迁移法的混凝土氯离子扩散系数的研究[C]//混凝土低碳技术国际学术研讨会暨第九届全国高性能混凝土学术研讨会论文选编.武汉:中国硅酸盐学会,2010:124-127.
LI S W, WANG M J, LI C. Research of chloride diffusion coefficient of concrete by RCM rapid migration test[C]//Selected papers of the international Symposium on Low Carbon Technology of Concrete and the 9th National Symposium on High Performance Concrete. Wuhan: Chinese Ceramic Society, 2010: 124-127 (in Chinese).
[27] 杨小刚,王晶,周永祥,等.混凝土渗透性测试方法的相关性研究[J].施工技术,2014,43(15):59-62+74.
YANG X G, WANG J, ZHOU Y X, et al. Study on correlation of test methods of concrete permeability[J]. Construction Technology, 2014, 43(15): 59-62+74 (in Chinese).
[28] 汪明刚.单轴持续压荷载及矿物掺合料对混凝土氯离子渗透性的影响研究[D].大连:大连理工大学,2011.
WANG M G. The research on the effect of uniaxial compressive load and mineral admixtures on chloride permeability of concrete[D]. Dalian: Dalian University of Technology, 2011 (in Chinese).
[29] 徐航.服役混凝土氯离子渗透性与化学腐蚀性研究[D].南昌:南昌大学,2012.
XU H. Research on chloride ion permeability and chemical corrosion of concrete in service[D]. Nanchang: Nanchang University, 2012 (in Chinese).
[30] 彭超.单向荷载、冻融循环及龄期对混凝土氯离子渗透性的影响研究[D].大连:大连理工大学,2010.
PENG C. The research of the effect of one-way load, freezing-thawing cyclcs and curing age on chloride permeability of concrete[D]. Dalian: Dalian University of Technology, 2010 (in Chinese).
[31] 范志宏,杨海成,于方.基于暴露试验的大掺量粉煤灰混凝土耐久性试验研究[J].硅酸盐通报,2020,39(8):2622-2627+2649.
FAN Z H, YANG H C, YU F. Durability test of high volume fly ash concrete based on long-term exposure test[J]. Bulletin of the Chinese Ceramic Society, 2020, 39(8): 2622-2627+2649 (in Chinese).
[32] 余强,曾俊杰,范志宏,等.偏高岭土和硅灰对混凝土性能影响的对比分析[J].硅酸盐通报,2014,33(12):3134-3139.
YU Q, ZENG J J, FAN Z H, et al. Comparative analysis on influence of metakaolin and silica fume on concrete[J]. Bulletin of the Chinese Ceramic Society, 2014, 33(12): 3134-3139 (in Chinese).
[33] 杜修力,金浏,张仁波.力学荷载对混凝土中氯离子渗透扩散行为影响述评[J].建筑结构学报,2016,37(1):107-125.
DU X L, JIN L, ZHANG R B. Review on effect of external mechanical loadings on chloride penetration and diffusion into concrete[J]. Journal of Building Structures, 2016, 37(1): 107-125 (in Chinese).
[34] 边重.逐步回归方法介绍[J].数理统计与管理,1983,2(3):39-48.
BIAN C. Stepwise regression method is introduced[J]. Application of Statistics and Management, 1983, 2(3): 39-48 (in Chinese).