EFFECT OF ELEVATED TEMPERATURE CURING ON THE TIME- DEPENDENT CHLORIDE DIFFUSION COEFFICIENTS

Author(s): Y. Liu and F. Presuel-Moreno
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: 479-486
Total Pages: 961
Language : English

Abstract: Diffusion coefficient of chloride ions in concrete is one of the major factors which determine the service life of reinforced concrete structures. It has been reported that chloride diffusion coefficient is time-dependent. In this investigation, electrical resistivity measurement was employed as a technique to study the evolution of chloride diffusion coefficients on concrete cured under different temperatures. Concrete cylinders with high volumes of Class F fly ash or/and Ground-granulated blast-furnace slag with cement replacement ratio by mass up to 70% were tested. The specimens were exposed to room temperature and 35°C lime water bath curing. It was found that the aging factor for diffusion coefficient obtained from resistivity measurements is affected by both curing regime and the amount/type of pozzolanic admixtures.

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