CHLORIDE PENETRATION INTO CONCRETE UNDER VARIOUS EXPOSURE CONDITIONS IN MARINE ENVIRONMENTS

Author(s): Francisco Presuel-Moreno, Yu-You Wu and Victor Echevarria
Paper category: Proceedings
Book title: Proceedings of CONSEC13 Seventh International Conference on Concrete under Severe Conditions - Environment and Loading Volume I
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: 666-677
Total Pages: 961
Language : English

Abstract: The long term durability and sustainability of reinforced concrete infrastructure in marine environments is one of the principal challenges being faced today (Service life >100 years). Chloride induced corrosion of reinforcing steel in such environments has resulted in reduced load capacity (after corrosion has propagated for a few years), leading to the premature replacement or repairs of reinforced concrete structures. Chloride build-up and deposited into the concrete surface as well as the chloride transport mechanisms in concrete greatly depend on the exposure conditions, concrete composition, age, degree of saturation, and other factors. Research in this field has been widely conducted and reported, but the investigation into the different types of concrete exposed to both controlled and natural exposure conditions in marine environments is limited This study experimentally investigates the ingress and penetration of chloride through eleven (11) types of mixed concrete exposed indoors and outdoors under various exposure conditions (submerged, tidal, splash, atmospheric). The outcome from this work would provide realistic parameters for predicting the service life of reinforced concrete structures in the submerged, tidal, splash and atmospheric zones. It would also provide rational arguments for the modification of current material and design criteria to meet the designed service life.

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