On the Durability of Sealable Circular Concrete Structures under Chloride Environment

On the Durability of Sealable Circular Concrete Structures under Chloride Environment

Reinforcement corrosion resulting from chloride attack is one major mechanism that compromises concrete durability. Numerical methods were commonly used for tackling Fick’s diffusion equations. In this paper, we developed a Crank-Nicolson based finite difference scheme suitable for circular concrete...

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Main Authors: Changwen Mi, Kaikai Shao, Xiaobao Li
Format: Article
Language:English
Published: Hindawi Limited 2015-01-01
Series:Advances in Materials Science and Engineering
Online Access:http://dx.doi.org/10.1155/2015/510845
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spelling doaj-49c92f83ee4644c89df4715ec8cd444c2020-11-24T22:24:05ZengHindawi LimitedAdvances in Materials Science and Engineering1687-84341687-84422015-01-01201510.1155/2015/510845510845On the Durability of Sealable Circular Concrete Structures under Chloride EnvironmentChangwen Mi0Kaikai Shao1Xiaobao Li2Jiangsu Key Laboratory of Engineering Mechanics, Department of Engineering Mechanics, Southeast University, Nanjing, Jiangsu 210096, ChinaJiangsu Key Laboratory of Engineering Mechanics, Department of Engineering Mechanics, Southeast University, Nanjing, Jiangsu 210096, ChinaDepartment of Mechanical Engineering, University of Houston, Houston, TX 77204, USAReinforcement corrosion resulting from chloride attack is one major mechanism that compromises concrete durability. Numerical methods were commonly used for tackling Fick’s diffusion equations. In this paper, we developed a Crank-Nicolson based finite difference scheme suitable for circular concrete structures. Both a time-dependent surface chloride model and diffusivity were considered. The impact of an ideal sealer on chloride redistribution was further investigated. Results suggested that the chloride threshold depth in a concrete structure is greatly affected by the radius of curvature, environment severity, and diffusivity. For sealable concrete structures, both the sealer application timing and location are of great importance.http://dx.doi.org/10.1155/2015/510845
collection DOAJ
language English
format Article
sources DOAJ
author Changwen Mi
Kaikai Shao
Xiaobao Li
spellingShingle Changwen Mi
Kaikai Shao
Xiaobao Li
On the Durability of Sealable Circular Concrete Structures under Chloride Environment
Advances in Materials Science and Engineering
author_facet Changwen Mi
Kaikai Shao
Xiaobao Li
author_sort Changwen Mi
title On the Durability of Sealable Circular Concrete Structures under Chloride Environment
title_short On the Durability of Sealable Circular Concrete Structures under Chloride Environment
title_full On the Durability of Sealable Circular Concrete Structures under Chloride Environment
title_fullStr On the Durability of Sealable Circular Concrete Structures under Chloride Environment
title_full_unstemmed On the Durability of Sealable Circular Concrete Structures under Chloride Environment
title_sort on the durability of sealable circular concrete structures under chloride environment
publisher Hindawi Limited
series Advances in Materials Science and Engineering
issn 1687-8434
1687-8442
publishDate 2015-01-01
description Reinforcement corrosion resulting from chloride attack is one major mechanism that compromises concrete durability. Numerical methods were commonly used for tackling Fick’s diffusion equations. In this paper, we developed a Crank-Nicolson based finite difference scheme suitable for circular concrete structures. Both a time-dependent surface chloride model and diffusivity were considered. The impact of an ideal sealer on chloride redistribution was further investigated. Results suggested that the chloride threshold depth in a concrete structure is greatly affected by the radius of curvature, environment severity, and diffusivity. For sealable concrete structures, both the sealer application timing and location are of great importance.
url http://dx.doi.org/10.1155/2015/510845
work_keys_str_mv AT changwenmi onthedurabilityofsealablecircularconcretestructuresunderchlorideenvironment
AT kaikaishao onthedurabilityofsealablecircularconcretestructuresunderchlorideenvironment
AT xiaobaoli onthedurabilityofsealablecircularconcretestructuresunderchlorideenvironment
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