[1]叶梦琦,李 扬.开裂混凝土氯离子扩散性能研究[J].湖北工业大学学报,2020,(2):88-91.
 YE Mengqi,LI Yang.Study on Chloride ion Diffusion Properties of Cracked Concrete[J].,2020,(2):88-91.
点击复制

开裂混凝土氯离子扩散性能研究()
分享到:

《湖北工业大学学报》[ISSN:1003-4684/CN:42-1752/Z]

卷:
期数:
2020年第2期
页码:
88-91
栏目:
湖北工业大学学报
出版日期:
2020-04-30

文章信息/Info

Title:
Study on Chloride ion Diffusion Properties of Cracked Concrete
文章编号:
1003-4684(2020)02-0088-04
作者:
 叶梦琦 李  扬
湖北工业大学土木建筑与环境学院, 湖北 武汉 430068
Author(s):
YE Mengqi LI Yang
School of Civil Engin,,Architecture and Environment, Hubei Univ. of Tech., Wuhan 430068,China
关键词:
裂缝 混凝土 氯离子扩散
Keywords:
crack concrete chloride ion diffusion
分类号:
TV431
文献标志码:
A
摘要:
为探索裂缝对开裂混凝土氯离子扩散性能的影响,采用无损裂缝制备方法预制相应裂缝宽度的混凝土试块,并进行70 d自然浸泡试验后对混凝土内部氯离子浓度进行测定。试验结果表明:裂缝使氯离子在混凝土中加速扩散,且氯离子在裂缝周围区域影响范围约为30~80 mm;氯离子浓度在20 mm深度后增长显著并在35 mm后趋于稳定;裂缝宽度对带裂缝混凝土氯离子扩散系数影响显著,可由裂缝宽度的三次函数描述带裂缝混凝土内氯离子传输规律。
Abstract:
In order to explore the influence of crack on chloride diffusion property of cracked concrete, a 70 d natural immersion test was conducted on concrete test block with corresponding crack width prefabricated by the method of nondestructive crack preparation. The test results show that the cracks provide convenience for chloride ion diffusion in concrete. The influence range of chloride ions around the fracture is about 30~80mm. The chloride ion concentration increased significantly after 20 mm depth and became stable after 35mm. The distribution of chloride ions in cracked concrete can be described by the cubic function of crack width.

参考文献/References:

[1]蔡健, 魏沐杨,罗赤宇, 等. 弯曲荷载与氯盐侵蚀共同作用下的预应力混凝土梁耐久性研究[J]. 工程力学, 2018, 35(7):208-218.
[2]胡思聪, 王连华,李立峰, 等. 非一致氯离子侵蚀下近海桥梁时变地震易损性研究[J]. 土木工程学报, 2019, 52( 4):62-71.
[3]Yuya Sakai. Relationship between pore structure and chloride diffusion in cementitious materials[J]. Construction and Building Materials, 2019, 229:768-777.
[4]Bjorn Van Belleghem. Evaluation and comparison of traditional methods and EPMA to determine the chloride ingress perpendicular to cracks in self-healing concrete[J]. Construction and Building Materials, 2019, 227:406-413.
[5]张希瑾, 田稳苓,王浩宇, 等. 带裂缝混凝土氯离子扩散作用试验研究[J]. 土木建筑与环境工程, 2017, 2(39):36-42.
[6]何世钦. 氯离子环境下钢筋混凝土构件耐久性能试验研究[D].大连: 大连理工大学, 2004.
[7]Weyers R E. Service life model for concrete structures in chloride laden environment[J]. Aci Materials Journal, 1998, 95(4):445-453.
[8]钟小平, 金伟良, 张宝健. 氯盐环境下混凝土结构的耐久性设计方法[J]. 建筑材料学报, 2016, 19(3):544-549.
[9]Mangat P S, Limbachiya M C. Effect of initial curing on chloride diffusion in concrete repair materials[J]. Cement & Concrete Research, 1999, 29(9):1475-1485.
[10] GrassI P. A lattice approach to model flow in cracked concrete[J]. Cement and Concrete Composites, 2009,31(7):454-460.
[11] 陆春华, 张邵峰, 刘荣桂,等. 横向弯曲裂缝对混凝土内氯离子侵蚀作用的影响[J]. 土木建筑与环境工程, 2013, 35(6):124-130.
[12] Kwon S J, Na U J, Sang S P, et al. Service life prediction of concrete wharves with early-aged crack: Probabilistic approach for chloride diffusion[J]. Structural Safety, 2009, 31(1):75-83.

相似文献/References:

[1]张利然,周金枝.混凝土高温多场耦合损伤分析[J].湖北工业大学学报,2019,34(1):34.
 ZHANG Liran,Zhou Jinzhi.Multi-field Coupled Damage Analysis and Simulation of High Temperature Concrete[J].,2019,34(2):34.
[2]兰瑞鑫,李 扬,叶梦琦. 氯盐侵蚀下开裂混凝土耐久性可靠度研究[J].湖北工业大学学报,2021,(4):85.
 LAN Ruixin,LI Yang,YE Mengqi. Study on Durability of Reinforced Concrete Members Due to Chloride Ingressionion Erosion[J].,2021,(2):85.
[3]向祖超,李 扬,沈子豪. 砂浆-骨料粘结界面力学性能[J].湖北工业大学学报,2021,(5):91.
 XIANG Zuchao,LI Yang,SHEN Zihao. Research on Mechanical Properties of Mortar-Aggregate Bonding Interface[J].,2021,(2):91.

备注/Memo

备注/Memo:
[收稿日期] 2019-09-27
[第一作者] 叶梦琦(1994-), 女,湖北武汉人, 湖北工业大学硕士研究生,研究方向为混凝土结构耐久性
更新日期/Last Update: 2020-05-13