The Effect of Basalt Fiber on Mechanical, Microstructural, and High-Temperature Properties of Fly Ash-Based and Basalt Powder Waste-Filled Sustainable Geopolymer Mortar

Mahmoud Ziada, Savaş Erdem, Yosra Tammam, Serenay Kara and Roberto Alonso González Lezcano
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Mahmoud Ziada: School of Civil Engineering, Avcilar Campus, Istanbul University-Cerrahpasa, 34200 Istanbul, Turkey
Savaş Erdem: School of Civil Engineering, Avcilar Campus, Istanbul University-Cerrahpasa, 34200 Istanbul, Turkey
Yosra Tammam: Civil Engineering Department, Avcilar Campus, Istanbul Gelisim University, 34200 Istanbul, Turkey
Serenay Kara: School of Civil Engineering, Avcilar Campus, Istanbul University-Cerrahpasa, 34200 Istanbul, Turkey
Roberto Alonso González Lezcano: Architecture and Design Department, Escuela Politécnica Superior, Universidad CEU San Pablo, 28040 Madrid, Spain

Sustainability, 2021, vol. 13, issue 22, 1-22

Abstract: As the human population grows and technology advances, the demand for concrete and cement grows. However, it is critical to propose alternative ecologically suitable options to cement, the primary binder in concrete. Numerous researchers have recently concentrated their efforts on geopolymer mortars to accomplish this objective. The effects of basalt fiber (BF) on a geopolymer based on fly ash (FA) and basalt powder waste (BP) filled were studied in this research. The compressive and flexural strength, Charpy impact, and capillary water absorption tests were performed on produced samples after 28 days. Then, produced samples were exposed to the high-temperature test. Weight change, flexural strength, compressive strength, UPV, and microstructural tests of the specimens were performed after and before the effect of the high temperature. In addition, the results tests conducted on the specimens were compared after and before the high-temperature test. The findings indicated that BF had beneficial benefits, mainly when 1.2 percent BF was used. When the findings of samples containing 1.2 percent BF exposed to various temperatures were analyzed, it was revealed that it could increase compressive strength by up to 18 percent and flexural strength by up to 44 percent. In this study, the addition of BF to fly ash-based geopolymer samples improved the high-temperature resistance and mechanical properties.

Keywords: geopolymer; fly ash; basalt fiber; basalt waste aggregate; mechanical properties (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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