eprintid: 11238
rev_number: 8
eprint_status: archive
userid: 3393
dir: disk0/00/01/12/38
datestamp: 2018-07-26 03:49:05
lastmod: 2018-07-26 03:49:05
status_changed: 2018-07-26 03:49:05
type: article
metadata_visibility: show
creators_name: Olofinnade, O. M.
creators_name: Ede, A. N.
creators_name: Ndambuki, J.M.
creators_name: Ngene, Ben U.
creators_name: Akinwumi, I. I.
creators_name: Ofuyatan, Olatokunbo M.
creators_id: NdambukiJM@tut.ac.za
creators_id: isaac.akinwumi@covenantuniversity.edu.ng
title: Strength and microstructure of eco-concrete
produced using waste glass as partial and
complete replacement for sand
ispublished: pub
subjects: TA
subjects: TH
divisions: sch_civ
full_text_status: none
keywords: compressive strength; eco-friendly concrete; waste glass sand; microstructure;
split tensile strength; sustainability
abstract: The sustainable benefits of waste glass usage in concrete include the
possibility of reducing solid waste and greenhouse gas emission and preservation of
raw materials. This current study examines the effect of recycled waste glass as a
partial and complete substitute for natural sand in producing eco-friendly concrete.
The recycled waste glass was proportioned in levels of 25, 50, 75 and 100% by
weight to substitute sand in the concrete using a mix ratio of 1:2:4 (cement:sand:
gravel) at a W/C ratio of 0.5 targeting 20 MPa strength at 28 days. Tests, which
include X-ray fluorescence (XRF), were conducted on the waste glass and cement
materials; slump test was performed on the freshly prepare concrete at different
percentage glass content. Compressive and tensile strength tests were performed
on 60 specimens after 3, 7, 28 and 90 days of curing. The concrete microstructure
was examined using the scanning electron microscope (SEM). Results showed that workability and the mechanical strength of the concrete produced decreased with
increasing waste glass content. However, concrete containing 25% and 50% waste
glass contents showed significant enhancement in strength, but it is recommended
that the optimum glass content should be 25% for the production of sustainable
eco-concrete.
date: 2018
date_type: published
publication: Cogent Engineering
volume: 5
publisher: Taylor and Francis
refereed: TRUE
issn: 2331-1916
official_url: https://www.tandfonline.com/doi/pdf/10.1080/23311916.2018.1483860
citation:   Olofinnade, O. M. and Ede, A. N. and Ndambuki, J.M. and Ngene, Ben U. and Akinwumi, I. I. and Ofuyatan, Olatokunbo M.  (2018) Strength and microstructure of eco-concrete produced using waste glass as partial and complete replacement for sand.  Cogent Engineering, 5.   ISSN 2331-1916