Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/50371
Title: Resistance of blended cement pastes to leaching in distilled water at ambient and higher temperatures
Authors: Wee, T.H. 
Zhu, J.
Chua, H.T. 
Wong, S.F. 
Keywords: Cement pastes
Distilled water
Leaching
Mineral admixtures
Temperature
Issue Date: Mar-2001
Source: Wee, T.H.,Zhu, J.,Chua, H.T.,Wong, S.F. (2001-03). Resistance of blended cement pastes to leaching in distilled water at ambient and higher temperatures. ACI Materials Journal 98 (2) : 184-193. ScholarBank@NUS Repository.
Abstract: This paper outlines an investigation on the resistance of ordinary Portland cement (OPC) pastes with and without mineral admixtures to leaching in distilled water at ambient and elevated temperatures of approximately 30 and 80 C, respectively. The effects of water-binder ratio (w/b), mineral admixtures, microstructure, and water-curing period were also explored. An immersion test using thin plate specimens was conducted to accelerate and study the leaching behavior of these materials in distilled water. Mercury intrusion porosimetry was performed to examine the change in microstructure, while thermogravimetric analysis was carried out to determine the free calcium hydroxide and calcium carbonate contents within the cement matrix. Based on visual observation together with change in mass, pore structure, porosity, free calcium hydroxide, and calcium carbonate contents, the resistance of cement pastes to leaching was evaluated, and guidelines on the design of concrete structures subjected to leaching in distilled water at both ambient and higher temperatures are provided.
Source Title: ACI Materials Journal
URI: http://scholarbank.nus.edu.sg/handle/10635/50371
ISSN: 0889325X
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

50
checked on Dec 15, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.