Properties of Concrete with Recycled Aggregates Giving a Second Life to Municipal Solid Waste Incineration Bottom Ash Concrete

Economic and environmental factors call for increased resource productivity. Partial or full replacement of Portland cement by wastes and by-products, and natural aggregates by construction and demolition wastes, are two prominent routes of achieving circular economy in construction and related indu...

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Bibliographic Details
Published in:Sustainability 2022-04, Vol.14 (8), p.4679
Main Authors: Joseph, Aneeta Mary, Matthys, Stijn, De Belie, Nele
Format: Article
Language:English
Subjects:
Aggregates
Ashes
Bottom ash
Cement
Combustion
Concrete
Concrete aggregates
Concrete mixing
Concrete properties
Construction
Environmental factors
Environmental impact
Incineration
Literature reviews
Municipal solid waste
Municipal waste management
Portland cement
Portland cements
Recycling
Solid waste management
Sustainability
Waste disposal
Water absorption
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Summary:Economic and environmental factors call for increased resource productivity. Partial or full replacement of Portland cement by wastes and by-products, and natural aggregates by construction and demolition wastes, are two prominent routes of achieving circular economy in construction and related industries. Municipal solid waste incineration (MSWI) bottom ashes have been found to be suitable to be used as a supplementary cementitious material (SCM) after various treatments. This paper reports a brief literature review on optimum use of recycled aggregates in concrete and an experimental study using replacement of natural aggregate by demolished concrete having MSWI bottom ash as partial replacement of Portland cement, and compares its properties to that of completely natural aggregate concrete. Additional water was added as a compensation for the water absorption by the recycled aggregate during the first 30 min of water contact during concrete mixing. Also the fine fraction of crushed concrete (
ISSN:2071-1050
2071-1050
DOI:10.3390/su14084679