Publication:
Thermal insulation and mechanical properties in the presence of glass bubble in fly ash geopolymer paste
Thermal insulation and mechanical properties in the presence of glass bubble in fly ash geopolymer paste
Date
2022-01-01
Authors
Noor Fifinatasha Shahedan
Mohd. Mustafa Al Bakri Abdullah
Norsuria Mahmed
Liew Yun Ming
Shayfull Zamree Abd. Rahim
Ikmal Hakem Abdul Aziz
Kadir A.A.
Sandu A.V.
Mohd Fathullah Ghazli@Ghazali
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Abstract
The density, compressive strength, and thermal insulation properties of fly ash geopolymer paste are reported. Novel insulation material of glass bubble was used as a replacement of fly ash binder to significantly enhance the mechanical and thermal properties compared to the geopolymer paste. The results showed that the density and compressive strength of 50% glass bubble was 1.45 g/ cm3 and 42.5 MPa, respectively, meeting the standard requirement for structural concrete. Meanwhile, the compatibility of 50% glass bubbles tested showed that the thermal conductivity (0.898 W/mK), specific heat (2.141 MJ/m3K), and thermal diffusivity (0.572 mm2/s) in meeting the same requirement. The improvement of thermal insulation properties revealed the potential use of glass bubbles as an insulation material in construction material.
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Keywords
Fly ash | Geopolymers | Glass bubble | Thermal insulation