Paper Title:
Simulations on Sulfate Ion Diffusivity in Concrete Column under Random Excitations
  Abstract

This paper presents a 2-D nonlinear and non-steady equation for the diffusion reaction of sulfate ion in concrete column subjected to couplings of random excitations and sulfate attack. Taking the diffusion reaction of sulfate ion in concrete column as an example, the time-variation behaviors of the ion concentration and its diffusion coefficients under white noise excitations are numerically analyzed. The results show that with the increasing of diffusion time, the sulfate ion concentration in the concrete column section has a gradual increase to reach a plateau in which the diffusion and reaction is in dynamical equilibrium state. Under random excitations, the sulfate ion concentrations in the column section increase with the excitation amplitudes, and the sulfate ion diffusion coefficients in concrete change randomly with the excitations and increase with its amplitudes. This work will provide a basis for analyzing the diffusion reaction behaviors of the corrosive medium in concrete structure and the damage evolution of concrete structure durability.

  Info
Periodical
Advanced Materials Research (Volumes 261-263)
Edited by
Jingying Zhao
Pages
275-279
DOI
10.4028/www.scientific.net/AMR.261-263.275
Citation
X. B. Zuo, W. Sun, "Simulations on Sulfate Ion Diffusivity in Concrete Column under Random Excitations", Advanced Materials Research, Vols. 261-263, pp. 275-279, 2011
Online since
May 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: In Seok Yoon
Abstract:The surface treatment system is one of the best options to extend the service life of marine concrete in terms of cost effectiveness versus...
765
Authors: Wen Hui Bai, Bin Xiang Sun
Abstract:In order to investigate flexural behavior of simply-supported beam using recycled coarse aggregate concrete, the difference of the component...
543
Authors: Shi Ping Zhang, Lan Zong, Jia Ping Liu
Abstract:A detailed observation on the penetration profile of chloride ions through a crack in concrete structures was carried out. Cracks were...
113
Authors: Jian Hua Wu, Yun Lan Liu
Abstract:This paper studies the influence of different mineral admixtures(fly ash and ground granulated blast furnace slag)on the carbonation...
366
Authors: Mengcheng Chen, Kai Wang, Quanshui Wu, Zhen Qin
Chapter 4: Reliability and Durability of Structures
Abstract:According to the service environment of light rail transit and subway structures, in this paper experiments on the corrosion characteristics...
1987