Fresh properties of cement pastes or mortars incorporating waste glass powder and cullet

•There is a good correlation between the hydration and the stiffening or flow.•The stiffening is highly controlled by fineness and morphology of glass powder.•An increase of glass powder fineness results in a reduction in the flow of mortar.•It is feasible to produce architectural mortar containing...

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Bibliographic Details
Published in:Construction & building materials 2017-01, Vol.131, p.793-799
Main Authors: Lu, Jian-xin, Duan, Zhen-hua, Poon, Chi Sun
Format: Article
Language:English
Subjects:
Flowability
Fresh property
Heat of hydration
Stiffening
Waste glass powder (WGP)
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Summary:•There is a good correlation between the hydration and the stiffening or flow.•The stiffening is highly controlled by fineness and morphology of glass powder.•An increase of glass powder fineness results in a reduction in the flow of mortar.•It is feasible to produce architectural mortar containing glass powder and cullet. This work was aimed at studying the fresh properties of cement-based mixtures containing waste glass powder (WGP) and waste glass cullet (WGC) obtained from crushed post-consumer beverage bottles. The experimental results show the setting time of the WGP modified pastes were prolonged due to the lower rate of hydration. Irrespective of the addition WGP, a good correlation between the early hydration characteristics and the stiffening or flowability can be established. However, during the first 30 min of hydration, the fresh properties of the WGP modified mortars were predominantly dependent on the particle size and the morphology of the WGP investigated.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2016.11.011