Concrete electrical resistivity to evaluate reinforcement service life

Author(s): Carmen Andrade
Paper category: Proceedings
Book title: Proceedings of the International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Electrochemistry in Civil Engineering
Editor(s): Lisbeth M. Ottosen
ISBN: 978-2-35158-176-6
e-ISBN: 978-2-35158-177-3
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 12-23
Total Pages: 11
Language : English

Abstract: Current codes have requirements for the durability design of concrete based on compressive strength and provisions related to cement content and water – cement ratio. For reinforcement corrosion the codes also specify the maximum flexural crack widths However, modern trends prefer to specify the performance rather than the concrete characteristics. This performance approach demands to define a durability controlling parameter, such as the chloride diffusion coefficient, with its corresponding test and the model to predict the time to steel corrosion. This paper describes the use of the concrete electrical resistivity to be used as durability performance parameter and also the complementary information that the resistivity can provide as it is: the setting period, the mechanical strength and the degree of curing. Also is explained how to design the concrete mix to obtain a target resistivity.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00