METHODOLOGY TO ANALYSE THE SALT FROST SCALING MECHANISM(S) IN CONCRETE WITH DIFFERENT BINDERS

Author: Martin Strand, Katja Fridh
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:172-181
Total Pages:10
Language:English

Abstract: The purpose of this article is to present a methodology which can be used to evaluate how the salt frost scaling mechanism(s) affects concrete with different air void systems. First, a test is made where the binder is mixed with various combinations of superplasticizer and air entraining agent to find one combination which performs well. The combination is then used when casting concrete to produce four air void systems, from approximately 1.5% to 4.5% in total air content, which are quantified with an air void analysis made on the hardened concrete. The concrete is sealed and hydrated until for over 300 days which results in a high degree of hydration for any binder. Then a salt frost scaling method is used with a temperature cycle which increases the salt frost scaling mechanism(s) load. The results present scaling from concrete with a high degree of hydration, regardless of hydration rate, and the effect the air void system has on the salt frost scaling damage in various binders given an even microstructure since each sample is fully hydrated. This enables a study of how various microstructures are affected by a constant load from the salt frost scaling mechanism(s) and of the salt frost scaling process.

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