Journal article

Effect of recycled glass fines on mechanical and durability properties of concrete foam in comparison with traditional cementitious fines

Alireza Kashani, Tuan D Ngo, Ailar Hajimohammadi

CEMENT & CONCRETE COMPOSITES | ELSEVIER SCI LTD | Published : 2019

Abstract

This paper shows the potential benefits of using recycled glass fines as a sustainable and low-cost alternative compared to fly ash, silica fume and fine sand in concrete foam. One of the main concerns of using recycled glass in concrete is durability and particularly alkali-silica reaction (ASR). SEM-EDS analysis of the mortar with glass showed the formation of ASR gel with a higher silicon to calcium ratio around the glass particles which justified the large ASR expansion. On the other hand, microtomography analysis showed that the porous structure of concrete foam can accommodate the expansion of ASR gel inside the pores with considerably less expansion and no cracking. The majority of th..

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University of Melbourne Researchers

Grants

Funding Acknowledgements

This work was supported by the Sustainability Victoria and ARC Centre for Advanced Manufacturing of Prefabricated Housing. Electron microscopy was carried out at the Bio21 Advanced Microscopy Facility at The University of Melbourne. The authors acknowledge the support of Dr Jay Black and the Trace Analysis for Chemical, Earth and Environmental Sciences (TrACEES) platform from the Melbourne Collaborative Infrastructure Research Program at the University of Melbourne. The authors also thank Hao Xu and Prashi Hemachandra for their help in making samples and running some of the laboratory experiments.