On the correlations between different chloride transport parameters and their role in service life estimation

ABSTRACT

In this article, the role of chloride transport parameters in the service life estimation of a reinforced concrete structure is discussed. This article also lists several qualitative and quantitative test methods used to measure resistance to ingress of chloride in concrete systems with their advantageous and critique properties. The relationship between the rapid assessment methods such as resistivity and the diffusion coefficient is put forward. A review of the ageing coefficient for different binder types is presented. The importance to characterise and account for the environmental factors such as exposure condition and ambient temperature variation is emphasised based on its impact on the chloride build-up rate. A parametric study is carried out to identify the role of different factors associated with chloride transport property in service life estimation. The prediction of chloride build-up rates for various binder composites based on analytical and numerical approaches is summarised along with relevant input parameters.

KEYWORDS:

• Diffusion coefficient
• decay factor
• resistivity
• chloride build-up rate

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Yuvaraj Dhandapani

Yuvaraj Dhandapani completed M.S.and Ph.D. in Building Technology and Construction Management Division at Indian Institute of Technology, Madras. He is currently a Research Fellow at the University of Leeds, UK. His research interest includes Cement chemistry & Concrete microstructure, Durability, Low carbon cements, Concrete, Calcined clays.

Manu Santhanam

Manu Santhanam holds a Ph.D. degree in Civil Engineering from Purdue University, USA. He has a few years of industrial experience in a construction chemicals company. He is presently a Professor at Indian Institute of Technology (IIT) Madras. His research interests include special concretes, cement chemistry, durability and non-destructive evaluation.