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Study on the damage process of concrete exposed to sulfate attack under flexural loading and drying-wetting cycles



Author(s): Jianming Gao, Zhenxin Yu, Luguang Song, Wei Sun
Paper category: Conference
Book title: 2nd International conference on Microstructural-related Durability of Cementitious Composites
Editor(s): Guang Ye, K. Van Breugel, Wei Sun, Changwen Miao
Print ISBN: 978-2-35158-129-2
e-ISBN: 978-2-35158-123-0
Publisher: RILEM Publications SARL
Pages: 760-767
Total Pages: 7
Language: English


Abstract: 
The damage process of concrete exposed to sulfate attack under flexural loading and drying-wetting cycles are investigated in this paper. MIP and XRD are used to investigate the changing of microstructure and corrosion products of concrete. The results indicate the coupling function of drying-wetting cycles and flexural loading aggravates the damage degree of concrete exposed to sulfate attack. The effect of flexural loading on deterioration of concrete under three factors mentioned-above depends on the stress level. In addition, the ratio of water to cementitious material and sulfate concentration can significantly affect the damage degree of concrete, and the addition of admixtures can obviously improve the ability of sulfate resistance of concrete exposed to sulfate under the coupling function of loading and wetting-drying cycles.


Online publication: 2013
Publication Type: full_text
Public price (Euros): 0.00