Deformation of concrete subject to freeze-thaw cycles combined with chloride salt solution

Author(s): Zhendi Wang, Yan Yao, Ling Wang, Yin Cao
Paper category: Conference
Book title: Concrete Repair, Rehabilitation and Retrofitting III (ICCRRR)
Editor(s): M.G. Alexander, H.-D. Beushausen, F. Dehn, P. Moyo
Print ISBN: 978-0-415-89952-9
Publisher: Taylor & Francis Group
Pages: 497- 498
Total Pages: 2
Language: English

To investigate the deformation of concrete under the combination action of freeze-thaw cycles and chloride salt solution, strain of the concrete matrix and temperature in specimen center were determined using the dual-purpose strain gauge. Saturation and weight loss of the specimen were also measured by means of weighing method. The results show that strain of the matrix increased cycle by cycle with the increase of exposure time. Further, the strain decreased on thawing stage and increased on freezing stage in the temperature range of −20°C∼−5°C. Gradual rise in weight loss and slight increase of saturation with the augment of strain were found in this study. The relationship between strain of concrete matrix and saturation, weight loss were also analyzed. The result of the present work implied that Phase transition affects the deformation of concrete matrix seriously and the strain of concrete matrix can be split into two parts, namely, plastic deformation and the propagation of cracks.

Online publication: 2014
Publication Type: abstract_only
Public price (Euros): 0.00