ORCID
- Li, Long-yuan: 0000-0002-5982-0965
Abstract
This paper details analytical research results into a novel geopolymer concrete embedded with glass bubble as its thermal insulating material, fly ash as its precursor material, and a combination of sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) as its alkaline activator to form a geopolymer system. The workability, density, compressive strength (per curing days), and water absorption of the sample loaded at 10% glass bubble (loading level determined to satisfy the minimum strength requirement of a load-bearing structure) were 70 mm, 2165 kg/m3, 52.58 MPa (28 days), 54.92 MPa (60 days), and 65.25 MPa (90 days), and 3.73 %, respectively. The thermal conductivity for geopolymer concrete decreased from 1.47 to 1.19 W/mK, while the thermal diffusivity decreased from 1.88 to 1.02 mm2/s due to increased specific heat from 0.96 to 1.73 MJ/m3K. The improved physicomechanical and thermal (insulating) properties resulting from embedding a glass bubble as an insulating material into geopolymer concrete resulted in a viable composite for use in the construction industry.
DOI
10.3390/ma14040809
Publication Date
2021-01-25
Publication Title
Materials
Volume
14
Issue
4
First Page
809
Last Page
809
ISSN
1996-1944
Embargo Period
2021-10-19
Organisational Unit
School of Engineering, Computing and Mathematics
Recommended Citation
Shahedan, N. F., Abdullah, M., Mahmed, N., Kusbiantoro, A., Tammas-Williams, S., Li, L., Aziz, I., Vizureanu, P., Wysłocki, J., Błoch, K., & Nabiałek, M. (2021) 'Properties of a New Insulation Material Glass Bubble in Geopolymer Concrete', Materials, 14(4), pp. 809-809. Available at: https://doi.org/10.3390/ma14040809
