Shahedan, NF, Abdullah, MMAB, Mahmed, N, Kusbiantoro, A, Tammas-Williams, S, Li, L-Y, Aziz, IH, Vizureanu, P, Wysłocki, JJ, Błoch, K and Nabiałek, M (2021) Properties of a New Insulation Material Glass Bubble in Geo-Polymer Concrete. Materials, 14 (4). ISSN 1996-1944

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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.

Item Type:	Article
Uncontrolled Keywords:	03 Chemical Sciences, 09 Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology
Divisions:	Engineering
Publisher:	MDPI
Related URLs:	https://www.ncbi.nlm.nih.gov/pubmed/33567696
Date Deposited:	01 Mar 2021 10:41
Last Modified:	04 Sep 2021 05:51
DOI or ID number:	10.3390/ma14040809
URI:	https://researchonline.ljmu.ac.uk/id/eprint/14532

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