eprintid: 16909
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/69/09
datestamp: 2023-12-19 03:23:24
lastmod: 2023-12-19 03:23:24
status_changed: 2023-12-19 03:07:06
type: article
metadata_visibility: show
creators_name: Abdulkadir, I.
creators_name: Mohammed, B.S.
creators_name: Ali, M.O.A.
creators_name: Liew, M.S.
title: Effects of Graphene Oxide and Crumb Rubber on the Fresh Properties of Self-Compacting Engineered Cementitious Composite Using Response Surface Methodology
ispublished: pub
keywords: Aggregates; Design of experiments; Rubber; Self compacting concrete; Surface properties, Crumb rubber; Engineered cementitious composite; Engineered cementitious composites; Fresh properties; Graphene oxide; Response-surface methodology; Self-compacting; Self-compacting engineered cementitious composite, Graphene
note: cited By 11
abstract: Graphene oxide-modified rubberized engineered cementitious composite (GO-RECC) is attracting the attention of researchers because of the reported benefits of the GO and crumb rubber (CR) on the strength and deformation properties of the composite. While it is well established that GO negatively affects the workability of cementitious composites, its influence on the attainment of the desired self-compacting (SC) properties of ECC has not yet been thoroughly investigated, especially when combined with crumb rubber (CR). In addition, to simplify the number of trial mixes involved in designing SC-GO-RECC, there is a need to develop and optimize the process using Design of Experiment (DOE) methods. Hence, this research aims to investigate and model using response surface methodology (RSM), the combined effects of the GO and CR on the SC properties of ECC through the determination of T500, slump flow, V-funnel, and L-box ratio of the SC-GORECC as the responses, following the European Federation of National Associations Representing for Concrete (EFNARC) 2005 specifications. The input factors considered were the GO by wt. of cement (0.02, 0.04, 0.06, and 0.08) and CR as a replacement of fine aggregate by volume (5, 10, and 15). The results showed that increasing the percentages of GO and CR affected the fresh properties of the SC-GORECC adversely. However, all mixes have T500 of 2.4 to 5.2 s, slump flow of 645 to 800 mm, V-funnel time of 7.1 to 12.3 s, and L-box ratio (H2/H1) of 0.8 to 0.98, which are all within acceptable limits specified by EFNARC 2005. The developed response prediction models were well fitted with R2 values ranging from 91 to 99. Through the optimization process, optimal values of GO and CR were found to be 0.067 and 6.8, respectively, at a desirability value of 1.0. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
date: 2022
publisher: MDPI
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85128289824&doi=10.3390%2fma15072519&partnerID=40&md5=3f4e57965b46cda9a5ce9acd63d53c4b
id_number: 10.3390/ma15072519
full_text_status: none
publication: Materials
volume: 15
number: 7
refereed: TRUE
issn: 19961944
citation:   Abdulkadir, I. and Mohammed, B.S. and Ali, M.O.A. and Liew, M.S.  (2022) Effects of Graphene Oxide and Crumb Rubber on the Fresh Properties of Self-Compacting Engineered Cementitious Composite Using Response Surface Methodology.  Materials, 15 (7).   ISSN 19961944