Autogenous shrinkage of alkali-activated slagfly ash pastes

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

Alkali-activated materials based on industrial by-products such as fly ash (FA) or blast furnace slag (BFS) have shown promising potential to replace Ordinary Portland Cement (OPC) in the construction industry1. However, alkali-activated FA reacts slowly at room temperature and alkali-activated BFS shows quick setting and large shrinkage. When FA and BFS are blended the alkali-activated blends can counterbalance some disadvantages when FA and BFS are activated alone. It has been reported that activated BFS and FA (AASF) has high compressive strength, low porosity and good durability2,3. However, the autogenous shrinkage of AASF is still higher than that of OPC4. The large autogenous shrinkage will hinder a wider application of this environmentally-friendly material. This paper aims to experimentally study the
autogenous shrinkage phenomenon of AASF in comparison with OPC paste. The
mechanism behind the autogenous shrinkage of AASF is discussed.
Original languageEnglish
Title of host publicationProceedings of the 5th International Slag Valorisation Symposium
Subtitle of host publicationLeuven, 03-05/04/2017
Pages369-372
Publication statusPublished - 2018
Event5th International Slag Valorisation Symposium - Leuven, Belgium
Duration: 3 Apr 20185 Apr 2018
Conference number: 5
http://slag-valorisation-symposium.eu/2017/

Conference

Conference5th International Slag Valorisation Symposium
CountryBelgium
CityLeuven
Period3/04/185/04/18
Internet address

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  • Cite this

    Li, Z., Nedeljkovic, M., Zuo, Y., & Ye, G. (2018). Autogenous shrinkage of alkali-activated slagfly ash pastes. In Proceedings of the 5th International Slag Valorisation Symposium: Leuven, 03-05/04/2017 (pp. 369-372)