A comparative investigation of eco-friendly fly ash-based geopolymer mortar produced by using electrical and heat curing: Mechanical properties, energy consumption and cost

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dc.authoridURUNVEREN, HUSAMETTIN/0000-0002-7665-8701
dc.contributor.authorUrunveren, Husamettin
dc.contributor.authorBeycioglu, Ahmet
dc.contributor.authorResulogullari, Emriye Cinar
dc.contributor.authorDisken, Nihal Bayramoglu
dc.date.accessioned2025-01-06T17:38:08Z
dc.date.available2025-01-06T17:38:08Z
dc.date.issued2024
dc.description.abstractThis study investigates the eco-friendly fly ash-based geopolymer mortar (GM) production using electrical curing (EC) and heat curing. Within the scope of the study, GM produced using the EC method was compared with GM produced using the heat curing (HC) method in terms of mechanical properties, energy consumption, and cost. The study consists of a preliminary experiment to determine the parameters to be used, mortar experiments using the limited parameters defined in preliminary experiments, and an energy consumption and cost analysis. In the preliminary experiments, different mix designs produced according to different MS modulus and Na 2 O concentrations were studied to decide an applicable range for temperatures of HC and an applicable range for voltages of EC. In the second stage, EC and HC were compared according to temperature changes in GMs, current changes in GMs, and compressive strength (CS). As a final stage, an energy consumption and cost analysis were performed to compare two curing methods according to the updated dollar-based unit prices for electricity per kWh for industrial uses in various countries in February 2024. Results showed that the MS modulus should be at least 1.2 and the Na 2 O concentration should be 10 % on average to obtain a workable mortar. The compressive strength of all mortars with any MS modulus increased up to 100 degrees C and then decreased HC applied samples. Stress values of 20, 25, 30, and 35 volts are applicable and the highest compressive strength values could be obtained with 25 volts, and 6 h of application is sufficient at 25 volts EC. MS module is a key parameter in current and temperature change. In EC application, 30 volts is the threshold value, and when an electrical voltage above 30 volts is applied, the mortar 's internal temperature suddenly reaches the peak value and the desired compressive strength results cannot be achieved. According to the cost analysis, it is seen that the HC electricity cost is 6.78 times more than the EC cost. A comprehensive efficiency calculation is strongly recommended for future studies. It has also been concluded that geopolymers could gain strength at much lower voltage values, so they have the potential to consume less electrical energy in comparison to conventional concrete.
dc.description.sponsorshipAdana Alparslan Turkes, Science and Technology University Scientific Research Projects Coordination Department [21103011]
dc.description.sponsorshipThis article has been supported by the Adana Alparslan Turkes, Science and Technology University Scientific Research Projects Coordination Department under 21103011 Project No.
dc.identifier.doi10.1016/j.conbuildmat.2024.137200
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.scopus2-s2.0-85197473315
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2024.137200
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2495
dc.identifier.volume439
dc.identifier.wosWOS:001266519000001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofConstruction and Building Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241211
dc.subjectGeopolymer mortar
dc.subjectElectrical curing
dc.subjectHeat curing
dc.subjectCompressive strength
dc.subjectCost analysis
dc.titleA comparative investigation of eco-friendly fly ash-based geopolymer mortar produced by using electrical and heat curing: Mechanical properties, energy consumption and cost
dc.typeArticle

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