[1]罗大明 张桂涛.基于贝叶斯理论的氯离子扩散系数计算模型[J].西安建筑科技大学学报(自然科学版),2019,51(05):710-716.[doi:10.15986/j.1006-7930.2019.010.015]
　LUO Daming,ZHANG Guitao.Calculation model of chloride diffusion coefficient based on Bayesian theory[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2019,51(05):710-716.[doi:10.15986/j.1006-7930.2019.010.015]
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基于贝叶斯理论的氯离子扩散系数计算模型()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
51
期数:
2019年05期
页码:
710-716
栏目:
出版日期:
2019-12-05

文章信息/Info

Title:
Calculation model of chloride diffusion coefficient based on Bayesian theory
文章编号:
1006-7930(2019)05-0710-07
作者:
罗大明1; 2 张桂涛1; 2
(1. 西安建筑科技大学 土木工程学院,陕西 西安 710055; 2.西部绿色建筑国家重点实验室,陕西 西安 710055)
Author(s):
LUO Daming1; 2;  ZHANG Guitao1; 2
(1. School of Civil Engineering, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China; 2. State Key Laboratory of Green Building in Western China, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China)
关键词:
氯离子;  扩散系数;  贝叶斯理论;  Fick’s第二定律;  混凝土耐久性
Keywords:
chloride ion;  diffusion coefficient;  Bayesian theory;  Fick’s second law;  concrete durability
分类号:
TU528
DOI:
10.15986/j.1006-7930.2019.010.015
文献标志码:
A
摘要:
氯离子侵蚀引起的钢筋锈蚀是沿海或者盐湖地区混凝土结构耐久性劣化的主要诱因,现有氯离子侵蚀模型中的扩散系数多基于Fick’s第二定律,由实验室试验或工程测试确定,具有一定的局限性.基于氯离子扩散系数试验数据,采用贝叶斯理论,建立了氯离子扩散系数计算模型.该模型综合考虑了水胶比、侵蚀时间、环境温度、相对湿度等因素对氯离子扩散系数的影响,能较好地反映氯离子扩散系数的变化情况.通过已有试验数据验证表明,该模型的计算结果与试验结果吻合较好,具有一定的理论和应用价值.
Abstract:
Reinforcement corrosion caused by chloride ion erosion is the main factor of durability deterioration of concrete structures in coastal or salt lake areas. The diffusion coefficient calculated by existing chloride ion erosion models is mostly based on Fick’s second law, which is determined by laboratory test or field test. The calculation method has some limitations. Based on the experimental data of chloride diffusion coefficient and Bayesian theory, a calculation model of chloride diffusion coefficient was established. The model takes into account the effects of water-binder ratio, service time, ambient temperature and relative humidity on chloride diffusion coefficient, which can better reflect the variation of chloride diffusion coefficient. The validation of the existing experimental data shows that the calculated results of the model are in good agreement with the experimental results, and the established model has certain theoretical and practical value.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-01-21 修改稿日期:2019-09-19基金项目:国家自然科学基金项目(51808438,51590914)第一作者:罗大明(1986-),男,博士,讲师,主要从事混凝土及混凝土结构耐久性研究.E-mail: dmluo@xauat.edu.cn
更新日期/Last Update: 2019-12-05