Analysis on resisting chloride penetration in marine concrete under sustained load

Author(s): J. B. Xiong, M. J. Wang, S. N. Wang, P. P. Li
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: 117-124
Total Pages: 8
Language : English

Abstract: When concrete structures were placed in marine environment, it is difficult to reflect the truly situation of concrete durability in lab tests which often considered single factors. Then, in this work the typical load levels of actual status in service life for marine concrete structures were applied, and the influence of flexural and compression load on chloride ion concentration distribution and chloride diffusion coefficient in concrete beams was investigated by changing the load levels. The test results indicated that, the chloride ion concentration and chloride diffusion coefficient decreased slightly in concrete with increasing compression load from 5 MPa to 10 MPa which was the typical compression load, this compression load will improve the impermeability of concrete. Compare with the unloaded specimens, the flexural load had a slight effect on chloride concentration distribution and chloride diffusion coefficient in concretes when the flexural load less than 30%, however, when the flexural load was over than 30%, the chloride ion concentration and chloride diffusion coefficient in concrete increased significantly due to the expansion of micro-cracks.

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