Testing the durability of alkali-activated concretes

Author(s): John Provis
Paper category: Proceedings
Book title: Proceedings of the International Conference on Sustainable Materials, Systems and Structures (SMSS2019) New Generation of Construction Materials
Editor(s): Marijana Serdar, Nina Štirmer, John Provis
ISBN: 978-2-35158-217-6,
Vol 1. ISBN: 978-2-35158-223-7
e-ISBN: 978-2-35158-218-3
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 141-141
Total Pages: 1
Language : English

Abstract: This presentation will summarise some of the results obtained from the round-robin testing programme of RILEM TC 247-DTA, where a set of alkali-activated concretes were designed, produced in different laboratories, and tested according to a number of standard durability test methods. The reproducibility of individual tests in each laboratory was in general very good, although with some notable exceptions including the ASTM C1202 "Rapid Chloride Permeability Test", which gave scattered results. The inter-laboratory reproducibilities of durability test results were moderate, but in several cases better than the reproducibility of compressive strength testing data for the same concretes. There was also not a clear correlation between the strength obtained in each lab for a specific mix, and the transport-related durability characteristics of the same concrete in that laboratory; durability and strength appear to be significantly decoupled in alkali-activated concretes. The results of this work provide important information highlighting areas in which further understanding of both materials and test methods is required.

Online publication : 2019
Publication type : full_text
Public price (Euros) : 0.00