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Mechanical and thermal performance of a geopolymeric and hybrid material based on fly ash

Vásquez Molina, Diego Alejandro and Mejía Arcila, Johanna Mercedes and Mejía de Gutiérrez, Ruby (2016) Mechanical and thermal performance of a geopolymeric and hybrid material based on fly ash. DYNA, 83 (195). pp. 216-223. ISSN 2346-2183

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This article presents an evaluation of the thermal behavior of a hybrid (FA/OPC) and geopolymer (FA100) material. The FA100 system is based on fly ash (FA), which has an elevated content of unburned material (14.8%). The FA/OPC system is comprised of a mixture of fly ash and ordinary Portland cement (OPC) at a proportion of 80/20. The thermal performance was evaluated by several tests, such as exposure to high temperatures (up to1000°C) and direct flame resistance. In addition, the effect of cyclic exposure was studied at 700°C for 10 cycles. FA/OPC hybrid material retains 92% of its initial strength and FA100 retains 113.3% of its initial strength at 700°C. Both materials can withstand 10 exposure cycles with a strength loss of less than 45%. In direct flame exposure, a temperature gradient of about 500°C was observed. These results indicate that these types of materials could possibly be used as fire-resistant materials in civil structures.

Tipo de documento:Artículo - Article
Palabras clave:fly ash, geopolymer, hybrid material, fire resistance
Temática:6 Tecnología (ciencias aplicadas) / Technology > 62 Ingeniería y operaciones afines / Engineering
Unidad administrativa:Revistas electrónicas UN > Dyna
Código ID:58936
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :31 Oct 2017 17:20
Ultima modificación:27 Noviembre 2017 22:05
Ultima modificación:27 Noviembre 2017 22:05
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