eprintid: 9481
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/94/81
datestamp: 2023-11-09 16:36:07
lastmod: 2023-11-09 16:36:07
status_changed: 2023-11-09 16:29:06
type: article
metadata_visibility: show
creators_name: Mohammed, B.S.
creators_name: Achara, B.E.
creators_name: Liew, M.S.
title: The influence of high temperature on microstructural damage and residual properties of nano-silica-modified (NS-modified) self-consolidating engineering cementitious composites (SC-ECC) using response surface methodology (RSM)
ispublished: pub
keywords: Compressive strength; Fibers; High temperature engineering; Microcracks; Microstructure; Multiobjective optimization; Scanning electron microscopy; Silica; Surface properties; Temperature control, Engineered cementitious composite (ECC); High temperature; Nano Silica; Residual compressive strength; Response surface methodology, High temperature effects
note: cited By 32
abstract: In this study, nano-silica (NS) has been incorporated into self-consolidating engineered cementitious composites (SC-ECC) for improving materials utilization and performance. Accordingly, the experimental results of the influence of nano-silica (NS) and polyvinyl alcohol (PVA) fibre on the high temperature resistance and microstructure of NS-modified SC-ECC is reported. Standard ECC mix (ECC M45) was adopted to develop mix matrix of composites with PVA fibre at 0.5, 1, 1.5, and 2, while NS at 1, 2, 3, and 4 with the aim of investigating the behaviour of the materials at high temperatures. The NS-modified SC-ECC specimens were considered at various high temperatures up to 400 °C for residual compressive strength assessment using response surface methodology (RSM). While the microstructure of the mix containing 2 each of NS and PVA fibre at a high temperature up to 400 °C were investigated for microstructural properties through mercury intrusion porosimetry (MIP) and scanning electron microscopy (SEM). The incorporation of NS and PVA fibre improved the performance of ECC due to the physiochemical effects and microcracks� bridging ability of NS and PVA fibres, respectively, which was further confirmed by the microstructural studies. The developed prediction model using RSM shows a strong degree of correlation and predictability between the dependent (residual compressive strength) variable and the independent (NS, and PVA) variables after high temperatures exposure. The multi-objective optimization results revealed that the criteria settings at 2 each of NS and PVA fibre achieved a residual compressive strength of about 101 MPa while optimizing the high temperature resistance up to about 293 °C. © 2018
date: 2018
publisher: Elsevier Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85055257850&doi=10.1016%2fj.conbuildmat.2018.10.114&partnerID=40&md5=54455b178daffb08343feb1b7630e03b
id_number: 10.1016/j.conbuildmat.2018.10.114
full_text_status: none
publication: Construction and Building Materials
volume: 192
pagerange: 450-466
refereed: TRUE
issn: 09500618
citation:   Mohammed, B.S. and Achara, B.E. and Liew, M.S.  (2018) The influence of high temperature on microstructural damage and residual properties of nano-silica-modified (NS-modified) self-consolidating engineering cementitious composites (SC-ECC) using response surface methodology (RSM).  Construction and Building Materials, 192.  pp. 450-466.  ISSN 09500618