Can waste foundry sand fully replace structural concrete sand?

Journal article


Mavroulidou, M (2018). Can waste foundry sand fully replace structural concrete sand? Journal of Material Cycles and Waste Management. 21 (3), pp. 594-605.
AuthorsMavroulidou, M
Abstract

Foundry sand (FS) waste creates a serious solid waste management problem worldwide due to the high volumes produced,
necessitating alternatives to landfilling. A possible route is its use in concrete; however, the current consensus is that FS can
only be used for modest sand replacements, based mostly on evidence on concrete with clay-bound FS (greensand). Con-
versely, this study assessed salient properties of structural concrete with chemically bound FS (polymeric resin binder), for
which there is very little information. Concrete mixes were prepared in which FS replaced regular concrete sand partially or
fully. The results showed that unlike greensand, the tested chemically bound FS could replace regular concrete sand fully,
giving highly workable mixes with good mechanical properties (compressive, splitting and flexural strengths and static modu -
lus of elasticity) similar to those of mixes with regular concrete sand; the effect of FS content on these properties was not
statistically significant. Durability in terms of water absorption, carbonation and alkali–silica reaction tests was not adversely
affected. The possibility of using high contents of this type of FS in concrete (as opposed to greensand) gives promise for an
additional outlet route for large quantities of this waste material with clear economic and environmental benefits.

KeywordsIndustrial solid waste management; Chemically bound foundry sand; Resin-bound foundry sand; Concrete properties; Concrete durability
Year2018
JournalJournal of Material Cycles and Waste Management
Journal citation21 (3), pp. 594-605
PublisherSpringer Verlag
ISSN1438-4957
Digital Object Identifier (DOI)doi:10.1007/s10163-018-00821-1
Publication dates
Print19 Dec 2018
Publication process dates
Deposited02 Jan 2019
Accepted11 Dec 2018
Publisher's version
License
CC BY 4.0
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https://openresearch.lsbu.ac.uk/item/8683q

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