Evaluation of fire, high-temperature and water erosion resistance of fiber-reinforced lightweight pozzolana-based geopolymer mortars

G. Silva, J. Salirrosas, G. Ruiz, S. Kim, J. Nakamatsu, R. Aguilar

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7 Citas (Scopus)

Resumen

The development of new building materials requires intensive analyses of their durability under aggressive conditions. Therefore, the current study evaluated the capacity of a fiber-reinforced lightweight pozzolana-based geopolymer mortar to resist the action of fire, high temperatures and water erosion. The fire resistance and heat absorption capacity were evaluated through the exposure of disc samples to a direct flame at 1000 °C and the measurement of reverse-side temperature, respectively. To evaluate the high-temperature resistance, uniaxial compression tests were performed on cubic samples after their exposure to oven-temperatures of 300°C, 500°C, 800°C, and 1000°C. Finally, water jet erosion and permeability tests were performed to analyze the interaction of the material with water. The results of the fire tests indicate that fiber-reinforced lightweight pozzolana-based geopolymer mortars are able to absorb up to approximately 65% of heat flame with only slight degradation. On the other hand, uniaxial compression tests showed a temperature resistance up to 800°C, above this temperature the cubic samples experimented significant volumetric changes that might have been caused by a reaction of remaining hydrogen peroxide or gas expansion. Finally, water exposure tests showed that the material is highly permeable and has a remarkable resistance to water erosion.

Idioma originalInglés
Número de artículo012016
PublicaciónIOP Conference Series: Materials Science and Engineering
Volumen706
N.º1
DOI
EstadoPublicada - 25 nov. 2019
EventoInternational Conference on Development of Eco-Friendly Composite Materials Based on Geopolymer Matrix and Reinforced with Waste Fibers 2019, FIBER 2019 - Montevideo, Uruguay
Duración: 28 nov. 201929 nov. 2019

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