- Title
- Alkali activated cement mixture at ambient curing : strength, workability, and setting time
- Creator
- Tekle, Biruk; Holschemacher, Klaus
- Date
- 2022
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/197928
- Identifier
- vital:18961
- Identifier
-
https://doi.org/10.1002/suco.202100274
- Identifier
- ISSN:1464-4177 (ISSN)
- Abstract
- The success of ordinary Portland cement (OPC) comes at a risk to the environment because of the large carbon dioxide emissions associated with cement manufacturing. This has led the scientific community to look for alternative cementitious materials with lower environmental impact. Alkali activated cement (AAC) is an excellent alternative to this end. In this study, the effect of binder content, alkaline solid to binder ratio (AS/B), sodium silicate to sodium hydroxide solids ratio (SS/SH), and total water content to total solid binder ratio (TW/TB) on the strength, setting time and flowability of ambient cured AAC mixtures are studied using Taguchi method of experimental design. Binder content was varied from 550 to 750 kg/m3, AS/B ratio from 0.14 to 0.22, SS/SH ratio from 1.5 to 2.5, and TW/TB ratio from 0.29 to 0.39. The study results showed that within the investigated range, an increase in binder content has a minor effect on strength but resulted in a considerable increase in setting time and flowability. An increase in the AS/B ratio resulted in increased flowability and setting time and a decrease in strength. Moreover, the study also investigated the relationship between compressive strength and flexural strength. © 2021 The Authors. Structural Concrete published by John Wiley & Sons Ltd on behalf of International Federation for Structural Concrete.
- Publisher
- John Wiley and Sons Inc
- Relation
- Structural Concrete Vol. 23, no. 4 (2022), p. 2496-2509
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- https://creativecommons.org/licenses/by/4.0/
- Rights
- Copyright © 2021 The Authors
- Rights
- Open Access
- Subject
- 4005 Civil engineering; 4016 Materials engineering; Alkali activated; Ambient curing; Blast furnace slag; Flexural strength; Fly ash; Setting time; Taguchi experimental design; Workability
- Full Text
- Reviewed
- Funder
- The authors gratefully acknowledge the financial support of the Alexander von Humboldt Foundation (1206836‐AUS‐HFST‐P).
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