Freeze-thaw durability of Portland cement concrete subjected to airfield pavement deicer

Title: Freeze-thaw durability of Portland cement concrete subjected to airfield pavement deicer
Author(s): H. Yu, H. Ma, K. Bai, W. Cao, P. Zhou, L. Han
Paper category : conference
Book title: International Conference on Microstructure Related Durability of Cementitious Composites
Editor(s): W. Sun, K. van Breugel, C. Miao, G. Ye and H. Chen
Print-ISBN: 978-2-35158-065-3
e-ISBN: 978-2-35158-084-4
Publisher: RILEM Publications
Publication year: 2008
Pages: 719 - 724
Total Pages: 6
Nb references: 13
Language: English

Abstract: In this contribution, the influence of calcium magnesium acetate (CMA), which is the main composition of the most frequently used airfield pavement dicer, on the freezing-thawing durability of Portland cement concrete were investigated. Freezing-thawing durability of Portland cement concrete was tested by accelerated freezing-thawing test. Three kinds of solutions, namely tap water, 3.5% NaCl solution, and CMA solution were employed to be the freezing-thawing mediums. Results show that freezing-thawing durability of concrete exposed to CMA solutions is related to the solution concentrations. CMA solution with a concentration of 3.5% is beneficial to durability of Portland cement concrete. Freeze-thaw failure of concrete exposed to 3.5% CMA solution is similar to that of concrete exposed to tap water; both are consequences of propagation of inner cracks. While freeze-thaw failure of concrete exposed to NaCl solution is different and is characterized by surface deterioration. When the samples exposed to 12.5% and 25% CMA solution are investigated, no tendency to failure even when the samples had subjected up to 600 cycles were observed. As long as durability of concrete exposed to airfield pavement dicer is concerned, attention should be mainly paid on corrosion occurred at normal temperature.

Online publication: 2009-06-09
Publication type : full_text
Public price (Euros): 0.00