National Taiwan Ocean University Institutional Repository:Item 987654321/50394
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 27308/39152
Visitors : 2466963      Online Users : 272
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
LoginUploadHelpAboutAdminister

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50394

Title: Effect of water soluble polymers on the early age shrinkage of cementitious composites by using the ring test method
Authors: Shih-Tang Lin
Ran Huang
Chin-Yun Chang
Contributors: 國立臺灣海洋大學:河海工程學系
Keywords: CrackDeformationDiffusionTransport properties
Date: 2010-06
Issue Date: 2018-10-08T01:47:28Z
Publisher: Materials Chemistry and Physics
Abstract: Abstract: The effect of water soluble polymers (WSP) on the shrinkage deformation at an early age is reported in this paper. Commercially available hydroxy propyl methyl cellulose (HPMC) with two different molecular weights was employed in the cementitious composites with various mixing ratios. A restrained shrinkage test was conducted with a steel ring in accordance with ASTM C1581-04. In addition to the steel ring's strain, the surface tension, viscosity, internal relative humidity (RH) and crack propagation were also investigated. The polymer-modified cementitious composites were found to be effective in reducing the crack tendency by extending the age at cracking in comparison to the control mixture. The test results also illustrated that the age at cracking significantly correlated with the restrained strain and the stress development, which were influenced by the relative humidity of the cementitious composite. The higher relative humidity that was maintained in the WSP specimen at an early age was due to the modified pore solution's viscosity. Both the viscosity and the surface tension of the pore solution were two major factors that affected the stress rate. A higher internal relative humidity and a lower surface tension contributed to a smaller stress rate. Nevertheless, the computed crack strain of the WSP showed no relationship to the cracking tendency.
Relation: 121(3) pp.440-446
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50394
Appears in Collections:[Department of Harbor and River Engineering] Periodical Articles

Files in This Item:

File Description SizeFormat
index.html0KbHTML3View/Open


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