eprintid: 17108
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/71/08
datestamp: 2023-12-19 03:23:33
lastmod: 2023-12-19 03:23:33
status_changed: 2023-12-19 03:07:28
type: article
metadata_visibility: show
creators_name: Rahman, S.H.A.
creators_name: Farhan, S.A.
creators_name: Sazali, Y.A.
creators_name: Shafiee, L.H.
creators_name: Husna, N.
creators_name: Hamid, A.I.A.
creators_name: Shafiq, N.
creators_name: Zulkarnain, N.N.
creators_name: Habarudin, M.F.
title: Effect of Elastomeric Expandable Additive on Compressive Strength and Linear Expansion of Fly-Ash-Based Strength-Enhanced Geopolymer Cement for Shrinkage-Resistant Oil-Well Cementing
ispublished: pub
note: cited By 1
abstract: The present study aimed to investigate the effect of an expandable additive on the com-pressive strength and linear expansion of geopolymer cement, which is an alternative to ordinary Portland cement, for oil-well cementing. Fly-ash-based geopolymer cement samples, with the ad-dition of slag cement as a strength enhancer, were prepared by using an elastomeric expandable additive (R-additive), which consists of styrene�butadiene rubber with a specific gravity of 0.945, at concentrations of 10, 15, 20 and 25 by weight of the solid blend, and cured in a water bath at 60�C and atmospheric pressure, and a curing chamber at 90�C and 3000 psi, or approximately 20.68 MPa. Mixability, amount of free water and slurry density were studied, and the effects of the concentration of R-additive on the compressive strength (F) and linear expansion (�l/l0 ) of the samples were analyzed. When cured at 60�C and atmospheric pressure, the highest F of 15.01 MPa was obtained when the concentration of R-additive was 10, while the highest �l/l0 of 0.9985 was obtained when the concentration of R-additive was 25. An increase in the curing temperature and pressure to 90�C and 3000 psi (�20.68 MPa) resulted in the reduction of F from 15.01 to 14.62 MPa and from 10.33 to 9.61 MPa, and the increase in �l/l0 from 0.52 to 0.63, and from 0.99 to 1.32, when the concentrations of R-additive were 10 and 25, respectively. The findings suggest that the formulations adopted, which contain R-additive at concentrations ranging from 10 to 25, fulfilled the requirements of the oil and gas industry. © 2021 by the authorsLicensee MDPI, Basel, Switzerland.
date: 2022
publisher: MDPI
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85124547617&doi=10.3390%2fapp12041897&partnerID=40&md5=53f9bf8a9eee913e0e93e1ad95312b10
id_number: 10.3390/app12041897
full_text_status: none
publication: Applied Sciences (Switzerland)
volume: 12
number: 4
refereed: TRUE
issn: 20763417
citation:   Rahman, S.H.A. and Farhan, S.A. and Sazali, Y.A. and Shafiee, L.H. and Husna, N. and Hamid, A.I.A. and Shafiq, N. and Zulkarnain, N.N. and Habarudin, M.F.  (2022) Effect of Elastomeric Expandable Additive on Compressive Strength and Linear Expansion of Fly-Ash-Based Strength-Enhanced Geopolymer Cement for Shrinkage-Resistant Oil-Well Cementing.  Applied Sciences (Switzerland), 12 (4).   ISSN 20763417