Freeze-thaw resistance with de-icing salts of alkaliactivated slag concrete: the influence of activator type and dosage and comparison to the ordinary Portland cement concrete

Scientific paper - Original scientific paper

• Author: Olivera Bukvić
• Author: Marijana Serdar
• Editor: Nina Štirmer
• Author's institution: University of Zagreb; Faculty of Civil Engineering
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract (english)

This paper presents the results of an experimental study of the freeze-thaw resistance with de-icing salts (resistance to scaling) of three slag-based alkali-activated (AA) concrete mixes and the reference OPC concrete mix. The scaling resistance was tested on the samples subjected to the 7, 14, 28, 42 and 56 freezing and thawing cycles with 3% NaCl solution as freezing medium. The results showed that the increased sodium silicate content enhances the scaling resistance of the AA concrete. OPC concrete exhibited much higher scaling resistance up to 42 cycles, after which it showed severe damage, while the scaling of AA concrete mixes became more moderate after 7 cycles of testing.

• Keywords (english): freeze-thaw resistance; scaling; alkali - activated materials; slag; durability
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Publication title: 8. simpozij doktorskog studija građevinarstva
• Numbering: pp. 213-224
• ISBN: 978-953-8168-60-4
• DOI: https://doi.org/10.5592/CO/PhDSym.2022
• URN:NBN: urn:nbn:hr:237:711604
• Publication: 2022-09
• Conference: Title: 8. simpozij doktorskog studija građevinarstva; Location: Zagreb, Croatia; Start date: 2022-09-05; End date: 2022-09-06; Assembly type: Lecture
• Type of resource: Text
• Publisher: Sveučilište u Zagrebu, Građevinski fakultet
• Publishing place: Zagreb
• Access conditions: Open access
• Created on: 2024-07-01 09:19:15