Properties of coated and uncoated biomass aggregates and their effects on the strength and water permeability of pervious geopolymer concrete

Arafa, S.A. and Mohd Ali, A.Z.B. and Abdul Awal, A.S.M. and Shamsuddin, Shamrul-Mar and Hossain, M. Zakaria (2018) Properties of coated and uncoated biomass aggregates and their effects on the strength and water permeability of pervious geopolymer concrete. International Journal of GEOMATE, 14 (41). pp. 44-51. ISSN 2186-2982

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Official URL: https://doi.org/10.21660/2018.41.73423

Abstract

Biomass aggregate (BA) is a by-product of biomass industries which is less dense and more porous than natural aggregate. In this two-part study, BA was mixed with fly ash and alkaline liquid, and heated in an oven at 80 °C for 24 h to produce coated biomass aggregate (CBA). The first part of this study was focused on the density, specific gravity, Los Angeles test, water absorption, aggregate impact value, and aggregate crushing value of BA, CBA, and normal aggregates (NA). The second part was focused on compressive strength and water permeability of pervious geopolymer concrete (PGC) that was produced with BA and CBA. Pervious concrete is a non-slip porous pavement concrete that allows water to slip through. In this study PGC was prepared from alkaline solution: fly ash ratio of 0:5, fly ash/coarse aggregate ratio of 1:7, Na2SiO3/NaOH ratio of 2:5, and NaOH concentration of 10 molarity. PGC was cured at 80°C for 24 h. PGC made with CBA had higher compressive strength without much effect on water permeability. It has been found that PGC made with BA and CBA had lower density than PGC made with NA. Results indicated that both BA and CBA are viable alternative aggregates for producing PGC.

Item Type:	Article
Uncontrolled Keywords:	Geopolymer; Biomass aggregate; Pervious concrete; Compressive strength; Water permeability
Subjects:	T Technology > TH Building construction > TH1000-1725 Systems of building construction. Including fireproof construction, concrete construction T Technology > TP Chemical technology > TP315-360 Fuel
Divisions:	Faculty of Civil Engineering and Built Environment > Department of Civil Engineering : Structural and Materials Engineering
Depositing User:	Miss Afiqah Faiqah Mohd Hafiz
Date Deposited:	22 Nov 2021 03:30
Last Modified:	22 Nov 2021 03:30
URI:	http://eprints.uthm.edu.my/id/eprint/3802

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