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Recycled foam concrete masonry and porcelanite rocks-based lightweight geo-polymer concrete at elevated temperatures

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dc.citedby0
dc.contributor.authorTurkey F.A.en_US
dc.contributor.authorBeddu S.en_US
dc.contributor.authorAl-Hubboubi S.K.en_US
dc.contributor.authorBasri H.B.en_US
dc.contributor.authorSidek L.M.en_US
dc.contributor.authorAhmed A.N.en_US
dc.contributor.authorid57819385900en_US
dc.contributor.authorid55812080500en_US
dc.contributor.authorid57202304860en_US
dc.contributor.authorid57065823300en_US
dc.contributor.authorid35070506500en_US
dc.contributor.authorid57214837520en_US
dc.date.accessioned2025-03-03T07:41:57Z
dc.date.available2025-03-03T07:41:57Z
dc.date.issued2024
dc.description.abstractThis study investigated the mechanical and microstructural properties of lightweight aggregate geo-polymer concrete (LWAGC) produced by alkali-activating glass powder (GP) and Fly Ash (FA) at elevated temperatures ranging from 200 to 800�C. It also examined the effects of incorporating crushed foam masonry (RFA) and crushed porcelanite rock aggregates (PA) into FA and GP-based geo-polymer concrete, both before and after exposure to ambient and high temperatures. A low-calcium type of FA was used as a binder in the geo-polymer concrete paste, with a 10 % replacement of glass powder. The concrete samples were heated at temperatures of 200�C, 400�C, 550�C, and 800�C for a duration of 60 minutes, with a heating rate of 7�C per minute. It was observed that the inclusion of weaker coarse aggregate resulted in a reduction of the compressive strength of the concrete. The geo-polymer concrete was subjected to tests for water absorption, mass loss, cracking, and microstructure analysis at elevated temperatures. The findings indicate that at heating temperatures of 400�C and above, the geo-polymer concrete underwent degradation and dehydration. The test findings also revealed residual compressive strengths of 104.9 %, 97.2 %, 81.8 %, and 64.2 % for the (RFA) types, and 107.3 %, 94.8 %, 78.3 %, and 58.8 % for the (PA) types. Additionally, the density decreased by 1.02 %, 4.88 %, 8.10 %, and 13.88 % for (RFA) and (PA) types, respectively, and by 0.27 %, 1.91 %, 4.67 %, and 10.79 % overall. The results indicate that the compressive strength of the concretes increased after exposure to elevated temperatures of 35�C and 200�C. However, when exposed to temperatures ranging from 400�C to 800�C, the strength of the LWAGC started to degrade and decline. Based on the obtained findings, the present study recommends performing laboratory tests on construction waste generated during demolition while developing and evaluating numerical models that predict the behavior of the resulting demolition materials when incorporated in the production of geo-polymer concrete. ? 2024 The Authorsen_US
dc.description.natureFinalen_US
dc.identifier.doi10.1016/j.aej.2024.06.043
dc.identifier.epage180
dc.identifier.scopus2-s2.0-85197393290
dc.identifier.spage171
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85197393290&doi=10.1016%2fj.aej.2024.06.043&partnerID=40&md5=710e5bb3766b2bc28e93a00d94d35178
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/36327
dc.identifier.volume105
dc.pagecount9
dc.publisherElsevier B.V.en_US
dc.sourceScopus
dc.sourcetitleAlexandria Engineering Journal
dc.subjectCompressive strength
dc.subjectConcrete aggregates
dc.subjectDemolition
dc.subjectGlass
dc.subjectLight weight concrete
dc.subjectRecycling
dc.subjectWater absorption
dc.subjectAggregate type
dc.subjectConcrete masonry
dc.subjectElevated temperature
dc.subjectFoam concretes
dc.subjectGlass Powder
dc.subjectHigh-temperature exposure
dc.subjectLightweight aggregate geo-polymer concrete
dc.subjectLightweight aggregates
dc.subjectPolymer concretes
dc.subjectRock aggregates
dc.subjectFly ash
dc.titleRecycled foam concrete masonry and porcelanite rocks-based lightweight geo-polymer concrete at elevated temperaturesen_US
dc.typeArticleen_US
dspace.entity.typePublication
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