eprintid: 10971
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/09/71
datestamp: 2023-11-10 03:25:33
lastmod: 2023-11-10 03:25:33
status_changed: 2023-11-10 01:14:16
type: article
metadata_visibility: show
creators_name: Ahmad, F.
creators_name: Ullah, S.
creators_name: Merican, N.H.B.H.
creators_name: Oñate, E.
creators_name: Al-Sehemi, A.G.
creators_name: Yeoh, G.H.
title: An investigation on thermal performance of wollastonite and bentonite reinforced intumescent fire-retardant coating for steel structures
ispublished: pub
keywords: Aluminum compounds; Bentonite; Binding energy; Building materials; Coatings; Electrons; Fire protection; Fires; Fourier transform infrared spectroscopy; Gas chromatography; Grinding (machining); High resolution transmission electron microscopy; Mass spectrometry; Morphology; Photoelectron spectroscopy; Pyrolysis; Reinforcement; Scanning electron microscopy; Steel structures; Transmission electron microscopy; X ray diffraction; X ray photoelectron spectroscopy, Elemental compositions; Field emission scanning; Functional group analysis; Intumescent fire retardant coatings; Pyrolysis gas chromatography; Structural steels; Wollastonite; XPS analysis, Thermogravimetric analysis
note: cited By 30
abstract: This research investigates the synthesis of new formulations of intumescent coating with improved thermal performance for steel structures. The coating formulations were based on the expandable graphite reinforced with wollastonite and bentonite. Ten samples of five formulations were synthesized by varying grinding time duration between 1 and 2 min. To analyse the substrate temperature of coated steel, fire test was performed according to ASTM-E119. The char morphology was observed by Field Emission Scanning Electron (FESEM) and Transmission Electron Microscopy (TEM). FTIR and X-ray Diffraction (XRD) test is conducted to analyse the composition of the residual char. The residual char mass was perceived by Thermogravimetric analysis (TGA) of the coating. X-ray Photo Electron Spectroscopy (XPS) was utilized for binding energy and elemental composition of the char. One-hour fire protection test showed 166 °C, the lowest substrate temperature of IFRC5-2 and 40.46 residual mass was obtained by TGA analysis. XRD analysis showed that residual char has aluminum borate and borophosphate and confirmed by functional group analysis using and FTIR. FESEM and TEM illustrated that char relates to hexagonal particles of wollastonite. XPS analysis of IFRC5-2 showed the carbon and oxygen contents were 41.40 and 51.20. Pyrolysis-Gas Chromatography�Mass Spectrometry (Pyrolysis GC�MS) results showed IFRC-5 produced less concentration of the gaseous products compared to IFRC-C. The formulations developed by grinding solid ingredients for 2 min showed improved thermal performance compared with the formulation produced by grinding solid ingredients for 1 min. Longer grinding time and higher amount of filler improved the thermal properties of the intumescent coating. © 2019
date: 2019
publisher: Elsevier Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85071396836&doi=10.1016%2fj.conbuildmat.2019.116734&partnerID=40&md5=343079d73229525688bc0fb6b90056b5
id_number: 10.1016/j.conbuildmat.2019.116734
full_text_status: none
publication: Construction and Building Materials
volume: 228
refereed: TRUE
issn: 09500618
citation:   Ahmad, F. and Ullah, S. and Merican, N.H.B.H. and Oñate, E. and Al-Sehemi, A.G. and Yeoh, G.H.  (2019) An investigation on thermal performance of wollastonite and bentonite reinforced intumescent fire-retardant coating for steel structures.  Construction and Building Materials, 228.   ISSN 09500618