English  |  正體中文  |  简体中文  |  Items with full text/Total items : 28611/40649
Visitors : 635923      Online Users : 48
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50794

Title: Relationship between Migration Coefficient of Chloride Ions and Charge Passed in Steady State
Authors: Chung-Chia Yang
Contributors: 國立臺灣海洋大學:材料工程研究所
Keywords: admixture
Date: 2004-04
Issue Date: 2018-10-25
Publisher: ACI Materials Journal
Abstract: Abstract: This paper presents a new method for determining the migration coefficient in concrete from a steady-state migration test by measuring the charge passed. The plain cement concrete and concrete containing different types of mineral admixtures (fly ash and slag) with water-binder ratios (w/b) of 0.35, 0.45, 0.55, and 0.65 were used. In this study, the electrochemical technique was applied to accelerate chloride ion migration in concrete to estimate the chloride flux. The chloride migration coefficient for concrete was calculated using the constant flux from the Nernst-Planck equation. The charge passed from the rapid chloride permeability test (RCPT), the nonsteady-state charge passed from the accelerated chloride migration test (ACMT), and the steady-state charge passed from ACMT were separately defined and derived. The chloride migration coefficient and the charge-passed values from different conditions were compared. The results for all mixtures show a linear correction between the migration coefficient and steady-state charge passed. For concrete containing mineral admixtures, there is no obvious correlation between migration coefficient and charge passed obtained from nonsteady-state conditions.
Relation: 101(2) pp.124-130
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50794
Appears in Collections:[材料工程研究所] 期刊論文

Files in This Item:

File Description SizeFormat

All items in NTOUR are protected by copyright, with all rights reserved.


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback