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Waste glass as partial mineral precursor in alkali-activated slag/fly ash system

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Zhang, Shizhe, Keulen, Arno, Arbi, Kamel, Ye, Guang·2017·Cement and Concrete Research

Abstract

The feasibility of a waste glass powder residue (GP) from glass recycling as partial mineral precursor to produce alkali-activated materials is investigated. GP served as powder coal fly ash (PCFA) replacement within a reference system composed of 50% PCFA and 50% ground granulated blast furnace slag (GGBS). Compared with PCFA, GP was better involved in the alkali activation process by having a higher silica and Ca dissolution. Furthermore, increasing GP replacement up to 30% prolonged the induction period, facilitated the gel formation and yielded a 35% higher 28-day compressive strength. These observations are similar to the effect of using both sodium hydroxide and sodium silicate as alkali activator in alkali-activated slag/fly ash systems. A higher polymerization of the gel network was also observed. Microstructure analysis indicated that the main reaction product is a calcium silicate hydrate type gel substituted with Al and Na (C-(N)-A-S-H type gel). This work largely contributes to the understanding of the reactivity and potential of GP and promotes its practical utilization as a mineral precursor in the production of alkaline cements.

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Metadata

Authors
Zhang, S., Keulen, A., Arbi, K., & Ye, G.
Venue
Cement and Concrete Research
Publisher
Elsevier BV
Published
2017-12
Volume
102
Pages
29-40
ISSN
0008-8846 (ISSN-L)
OpenAlex
W2756644022
Cited by
283
References
58
FWCI
14.56
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Waste glass as partial mineral precursor in alkali-activated slag/fly ash system. https://app.cochat.ai/papers/10.1016/j.cemconres.2017.08.012
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Zhang, S., Keulen, A., Arbi, K., & Ye, G. (2017). Waste glass as partial mineral precursor in alkali-activated slag/fly ash system. Cement and Concrete Research. https://doi.org/10.1016/j.cemconres.2017.08.012

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