A study on low energy demand materials used in glasscrete to counteract alkali-silica reactions

Conference item


Mavroulidou, M and Awoliyi, S (2017). A study on low energy demand materials used in glasscrete to counteract alkali-silica reactions. 15th International Conference on Environmental Science and Technology CEST2017. Rhodes, Greece 31 Aug - 02 Sep 2017 London South Bank University.
AuthorsMavroulidou, M and Awoliyi, S
Abstract

The potential of waste glass use in concrete as an alternative outlet to landfilling is excellent; however glasscrete (i.e. concrete with glass aggregate) suffers from durability problems caused by alkali-silica reactions (ASR). The use of pozzolanic materials to counteract ASR has been increasingly studied. This paper investigates the ability of selected low-energy demand binders/pozzolans to counteract ASR in glasscrete: these include paper sludge ash (PSA), a by-product of the paper making industry, used together with a standardised pozzolanic material for concrete, i.e. Pulverised Fly Ash (PFA) an industrial byproduct of electric power stations. A number of laboratory tests were performed on the different glasscrete mixes to assess properties (workability, compressive and tensile strengths and elasticity moduli and water absorption). Mortars were also tested for alkali-silica reaction (ASR) using the accelerated mortar bar test, which showed that ASR was effectively counteracted, towards better glasscrete durability. Glasscrete mixes were identified, with similar strengths as the respective control mixes with natural aggregates. Workability was however affected in all mixes and should be addressed in further research.

KeywordsSolid waste management, glasscrete, alkalisilica
Year2017
PublisherLondon South Bank University
Publisher's version
License
CC BY 4.0
Publication dates
Print31 Aug 2017
Publication process dates
Deposited30 Oct 2017
Accepted23 Apr 2017
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https://openresearch.lsbu.ac.uk/item/86y11

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