Experiment on life-cycle performance of concrete structure under chlorine salt coupling with load

Author(s): X. P. Zhong, W. L. Jin (Invited speaker), Y. Wang
Paper category: Proceedings
Book title: Proceedings of the Seventh International Conference on Concrete under Severe Conditions – Environment and Loading
Editor(s): Z.J. Li, W. Sun, C.W. Miao, K.Sakai, O.E. Gjørv, N.Banthia
ISBN: 978-2-35158-124-7
e-ISBN: 978-2-35158-134-6
Publisher: RILEM Publications SARL
Publication year: 2013
Pages: 108-116
Total Pages: 9
Language : English

Abstract: By the ECWD (Electro-osmosis - constant Current – Wet and Dry cycle) accelerated corrosion method, the effect of the sustained load action and supplementary gelled material type on life-cycle performance of concrete structures (bearing capacity, deflection, crack width) was studied in this paper. The results showed that under the same corrosion time, the bigger sustained load was, the larger reinforced corrosion rate and the average width and maximum width of corrosion-induced cracks, and the greater ultimate bearing capacity decreased. When load exceeds 65% ultimate load, the deformation ability of beams reduced, the ductility became bad. Under the same corrosion rates, the higher sustained load level was, the comparatively later the corrosion-induced cracks appeared. Admixture has an effect on reinforced corrosion initiation time, corrosion rate, and corrosive-induced crack width. The beams with admixture can prolong reinforced corrosion initiation time. Under the same corrosion time, the reinforced corrosion rate and corrosion-induced crack width can be reduced. But, admixture type hasn’t a significant effect on ultimate bearing capacity of beams.

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