eprintid: 18193
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/81/93
datestamp: 2024-06-04 14:10:20
lastmod: 2024-06-04 14:10:20
status_changed: 2024-06-04 14:01:41
type: article
metadata_visibility: show
creators_name: Baena, J.C.
creators_name: Wang, C.
creators_name: Kabir, I.I.
creators_name: Khalid, A.
creators_name: Nazir, M.T.
creators_name: Yuen, A.C.Y.
creators_name: Ahmad, F.
creators_name: Yeoh, G.H.
title: Fire behaviour of waterborne intumescent coatings on timber substrate for bushfire exposure
ispublished: pub
keywords: Coatings; Cost effectiveness; Fire protection; Fires; Graphite; Resins; Timber, Ammonium polyphosphates; Bushfire attack level; Bushfires; Expandable graphite; Exposed to; Fire behaviour; Intumescent coating; Radiata pine; Timber substrates; Waterborne acrylic resin, Heat flux
note: cited By 4
abstract: The fire behaviour of radiata pine timber, treated with intumescent coatings and exposed to heat flux conditions equivalent to a high-risk bushfire attack level (BAL) is investigated. The experiment is designed for coated timber exposed to bushfire attack levels greater than 19 kW/m2 and up to 29 kW/m2 (BAL-29) in accordance with AS 3959. The timber was coated with a DFT of 400 μm of the developed intumescent formulations based on expandable graphite (EG), ammonium polyphosphate (APP) and a waterborne acrylic resin with high adhesion strength. The coated timbers were tested according to AS3959, for a BAL-29 rating, using a cone calorimeter at 25 kW/m2 for 10 min. Most of the coated samples reported a substantial reduction in the peak heat release rate (p-HRR) and average HRR with values not greater than 100 kW/m2 and 60 kW/m2, respectively. These results satisfy the requirements for bushfire-resistant timber at BAL-29 rating. Formulation 4 (F4), with EG:APP ratio of 3:1 and resin content of 45 wt was identified as the most cost-effective formulation. Coatings with high loading of EG and APP provided the best fire protection to the timber substrate, however, a larger char with a less compact structure is formed. © 2023 Elsevier Ltd
date: 2023
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85163725638&doi=10.1016%2fj.firesaf.2023.103836&partnerID=40&md5=4999428d203aa700e020ca6b9271b7ba
id_number: 10.1016/j.firesaf.2023.103836
full_text_status: none
publication: Fire Safety Journal
volume: 140
refereed: TRUE
citation:   Baena, J.C. and Wang, C. and Kabir, I.I. and Khalid, A. and Nazir, M.T. and Yuen, A.C.Y. and Ahmad, F. and Yeoh, G.H.  (2023) Fire behaviour of waterborne intumescent coatings on timber substrate for bushfire exposure.  Fire Safety Journal, 140.