Mechanical properties and thermal conductivity of fly ash-based geopolymer foams with polypropylene fibers

Agustini, Ni Komang Ayu and Triwiyono, Andreas and Sulistyo, Djoko and Suyitno, S. (2021) Mechanical properties and thermal conductivity of fly ash-based geopolymer foams with polypropylene fibers. Applied Sciences (Switzerland), 11 (11). ISSN 20763417

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Abstract

This paper focuses on the effect of polypropylene (PP) fibers on the mechanical properties and thermal conductivity of fly ash-based geopolymer foams. Class C Fly ash (FA) was used as a binder material. A mixture of sodium silicate (SS) and sodium hydroxide (SH) was used as an alkaline activator of the geopolymer binder. The foams were prepared mechanically by mixing the foaming agent with distilled water at high pressure. The foams were added to the geopolymer admixture with volumes of 40 and 60. A small dosage of PP was varied from 0, 0.25, and 0.50 by weight of fly ash (FA). The result showed that the strength of foamed geopolymer rises as the PP fiber content increases. The PP fiber was proven to increase the tensile strength of foamed geopolymer due to the ability of PP fiber to connect the crack and improve the tensile strength. The PP fiber amount in this study significantly affects the thermal conductivity of foamed geopolymer. However, the thermal conductivity in this study has the same properties as lightweight concrete and a little higher than gypsum board. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Item Type: Article
Additional Information: Cited by: 23; All Open Access, Gold Open Access
Uncontrolled Keywords: foamed geopolymer; polypropylene; thermal conductivity; mechanical properties
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering > Civil Engineering & The Enviromental Department
Depositing User: Sri JUNANDI
Date Deposited: 28 Oct 2024 03:31
Last Modified: 28 Oct 2024 03:31
URI: https://ir.lib.ugm.ac.id/id/eprint/8542

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