|本期目录/Table of Contents|

[1]陆春华,褚天舒,杨金木,等.通电加速与氯盐干湿条件下钢筋锈蚀的时间相似关系试验[J].南京工业大学学报(自然科学版),2019,41(02):194-200.[doi:10.3969/j.issn.1671-7627.2019.02.010]
 LU Chunhua,CHU Tianshu,YANG Jinmu,et al.Experiments in bar corrosion between electrification acceleration and chloride dry-wet conditions for time similarity relationship[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2019,41(02):194-200.[doi:10.3969/j.issn.1671-7627.2019.02.010]
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通电加速与氯盐干湿条件下钢筋锈蚀的时间相似关系试验()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
41
期数:
2019年02期
页码:
194-200
栏目:
出版日期:
2019-03-19

文章信息/Info

Title:
Experiments in bar corrosion between electrification acceleration and chloride dry-wet conditions for time similarity relationship
文章编号:
1671-7627(2019)02-0194-07
作者:
陆春华褚天舒杨金木施久灵
江苏大学 土木工程与力学学院,江苏 镇江 212013
Author(s):
LU ChunhuaCHU TianshuYANG JinmuSHI Jiuling
College of Civil Engineering and Mechanics,Jiangsu University,Zhenjiang 212013,China
关键词:
钢筋锈蚀率 相似性 法拉第定律 恒电流通电加速试验 氯盐环境
Keywords:
corrosion rate of steel bar similarity Faraday’s law constant electric current acceleration test chloride load coupling
分类号:
TU528.1
DOI:
10.3969/j.issn.1671-7627.2019.02.010
文献标志码:
A
摘要:
为了研究氯盐侵蚀环境下混凝土内钢筋的锈蚀发展规律,以环境-时间相似理论模型为指导,开展恒电流通电加速试验与自然环境氯盐干湿循环试验,利用法拉第定律计算钢筋锈蚀率,以两种侵蚀条件下的钢筋锈蚀率接近为条件建立两者间的时间相似关系模型。试验结果表明:以自然氯盐侵蚀环境下钢筋锈蚀率实测值为4.04%的试件为例,达到相同锈蚀率,恒电流通电加速锈蚀试验所需时间为160 h,由时间相似关系模型计算得到两种侵蚀环境条件下的时间相似系数为0.025,从而求得自然氯盐环境条件下的钢筋锈蚀时间预测值为4.0 a,与试验值3.836 a间的误差为4.28%,验证了本文所建立的基于钢筋锈蚀率的时间相似模型的可行性,为预测氯盐环境下混凝土结构钢筋锈蚀提供一定的理论参考。
Abstract:
In order to explore the degradation process of steel in concrete structure under the coupling of chloride and loads,based on the environment-time similarity model,the constant electric current acceleration test and natural aggressive test were carried out.The corrosion rate of steel bar was calculated by Faraday rust law.The corrosion rates of steel bars in two chloride environments with coupling load were approached.Based on the corrosion rate of reinforcing bars,the time similarity model of reinforcement rust was established.Results revealed that when the corrosion rate of the component in the two chloride environments with coupling load was 4.04%,the time needed in constant current charging acceleration test was 160 h.The time similarity model coefficient calculated was 0.025.Based on the modeling findings,the predicted corrosion time of the natural environment test component was 4 a with the error between the theoretical and experimental value(3.836 a)of 4.28%.Therefore,the similarity model could provide a theoretical method for predicting the corrosion rate of steel bars in concrete structures under natural environments.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-11-07
基金项目:国家自然科学基金(51578267,51878319); 江苏省“六大人才高峰”高层次人才选拔培养资助项目(2015-JZ-008); 江苏省普通高校学术学位研究生科研创新计划(KYLX16_0903)
作者简介:陆春华(1979—),男,副教授,E-mail:lch79@ujs.edu.cn.
引用本文:陆春华,褚天舒,杨金木,等.通电加速与氯盐干湿条件下钢筋锈蚀的时间相似关系试验[J].南京工业大学学报(自然科学版),2019,41(2):194-200..
更新日期/Last Update: 2019-03-31