DEICER-SALT SCALING OF CONCRETE CONTAINING FLY ASH

Author: Michael Thomas and Huang Yi
Paper category: Proceedings
Book title: Proceedings of the International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference Segment on Frost Action in Concrete
Editor(s): Marianne Tange Hasholt, Katja Fridh and R. Doug Hooton
ISBN:978-2-35158-182-7
e-ISBN:978-2-35158-183-4
Publisher:RILEM Publications SARL
Publication year:2016
Pages:192-201
Total Pages:10
Language:English

Abstract: This paper presents results and observations from the laboratory, field-exposure sites and real pavements on the performance of concrete containing fly ash exposed to freezing and thawing in the presence of deicing salts. Results from accelerated laboratory tests indicate variable performance of concrete containing fly ash especially at higher replacement levels. However, fly ash concrete generally performs well in the field even with frequent applications of salt and at relatively high replacement levels. Scaling of fly ash concrete in the field is largely restricted to hand-finished flatwork (e.g. sidewalks and driveways) as opposed to formed (e.g. barrier walls or bridge columns) or slipformed (e.g. pavements, curb and gutter) surfaces and is possibly the result of improper placing, finishing or curing practices. It is shown that concrete containing high levels of fly ash (and slag) maybe be more sensitive to poor practices.

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