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AuthorIrshidat, Mohammad R.
AuthorAl-Nuaimi, Nasser
AuthorRabie, Mohamed
Available date2023-12-05T10:28:38Z
Publication Date2021
Publication NameConstruction and Building Materials
ResourceScopus
ISSN9500618
URIhttp://dx.doi.org/10.1016/j.conbuildmat.2021.125488
URIhttp://hdl.handle.net/10576/50086
AbstractThis paper investigates the ability of recycling the municipality solid waste incineration (MSWI) ashes as sand replacement in cementitious binder production. Two types of MSWI ashes were considered in this study including fly ash and bottom ash. The ashes were characterized, and then incorporated into the mixes as sand replacement with different ratios: 0%, 10%, 20%, and 30%. Comprehensive experimental work was conducted to investigate the mechanical strengths, workability, density, water absorption, thermal conductivity, thermal stability, chemical composition, and heavy metals content of the prepared binders. The results reflected the ability of producing sustainable cementitious binder with low dosage of MSWI ashes (up to 10%) as sand replacement with good mechanical properties, and accepted workability, water absorption, and thermal stability. Partially substitution of sand with MSWI ashes enhanced the early (3-day) compressive strength of cement mortar. Optimum enhancements of 16% and 45% were achieved at 10% and 20% replacement ratios in the case of mortar with MSWIFA and MSWIBA, respectively. Using the MSWI ashes as sand replacement resulted in better compressive strength of the mortar compared to the common approach of using it as cement replacement. However, the chemical composition analysis showed the presence of heavy metals in the hydration products of the binder. The mobility and leaching of these metals should be taken into consideration before any possible application of these materials.
SponsorThe ICP-OES test was accomplished in the Central Laboratories unit, Qatar University, Qatar.
Languageen
PublisherElsevier
SubjectCementitious binder
Heavy metals
Incineration ashes
Municipal solid waste
Sand replacement
Strength
TitlePotential utilization of municipal solid waste incineration ashes as sand replacement for developing sustainable cementitious binder
TypeArticle
Volume Number312
dc.accessType Abstract Only


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