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Clean Technologies and Environmental Policy

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24.04.2018 | Original Paper

Fire-resistant geopolymer bricks synthesized from high-calcium fly ash with outdoor heat exposure

verfasst von: Prinya Chindaprasirt, Ubolluk Rattanasak

Erschienen in: Clean Technologies and Environmental Policy | Ausgabe 5/2018

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Abstract

This research proposed an alternative utilization of high-calcium fly ash to produce geopolymer bricks for fire-resistant applications. Outdoor heat exposure (OHE) was applied to cure geopolymer mortar. The temperature was up to 40 °C. Geopolymer brick was created with a 30-day compressive strength of 47 MPa via OHE curing for 3 days. The brick experienced a low weight loss after the firing test, which indicated its fire-resistant property. For the flame test, the maximum temperature on the opposite side of the brick from the flame was lower than 380 °C, with no observable cracks, complying with the fire-test requirement. Therefore, high-calcium fly ash geopolymer cured with OHE is suitable for use as a fire-resistant material. In addition, outdoor heat exposure is a promising renewable means to cure geopolymer.

Vorheriger Artikel Steel slag and iron ore tailings to produce solid brick

Nächster Artikel Zn–Al–CO3 layered double hydroxides prepared from a waste of hot-dip galvanizing process

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Titel: Fire-resistant geopolymer bricks synthesized from high-calcium fly ash with outdoor heat exposure
verfasst von: Prinya Chindaprasirt
Ubolluk Rattanasak
Publikationsdatum: 24.04.2018
Verlag: Springer Berlin Heidelberg
Erschienen in: Clean Technologies and Environmental Policy / Ausgabe 5/2018
Print ISSN: 1618-954X
Elektronische ISSN: 1618-9558
DOI: https://doi.org/10.1007/s10098-018-1532-4

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