Flame resistance of geopolymer foam coatings ...
Document type :
Article dans une revue scientifique: Article original
Permalink :
Title :
Flame resistance of geopolymer foam coatings for the fire protection of steel
Author(s) :
Sarazin, Johan [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Davy, Catherine A. [Auteur correspondant]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Bourbigot, Serge [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Tricot, Grégory [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Hosdez, Jérôme [Auteur]
Lambertin, David [Auteur]
Fontaine, Gaëlle [Auteur correspondant]
Ecole Nationale Supérieure de Chimie de Lille [ENSCL]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Davy, Catherine A. [Auteur correspondant]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Bourbigot, Serge [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Tricot, Grégory [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Hosdez, Jérôme [Auteur]
Lambertin, David [Auteur]
Fontaine, Gaëlle [Auteur correspondant]
Ecole Nationale Supérieure de Chimie de Lille [ENSCL]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Journal title :
Composites Part B: Engineering
Abbreviated title :
Composites Part B: Engineering
Volume number :
222
Pages :
109045
Publisher :
Elsevier BV
Publication date :
2021-10
ISSN :
1359-8368
English abstract : [en]
This research investigates the fire resistance of novel geopolymer (GP) foams, based on alkali-activated metakaolin and silica fume (SF). Fresh GP foams are applied as coatings on steel plates. After one week curing, the ...
Show more >This research investigates the fire resistance of novel geopolymer (GP) foams, based on alkali-activated metakaolin and silica fume (SF). Fresh GP foams are applied as coatings on steel plates. After one week curing, the foams are subjected to a flame burn-through test. Changes in their physico-chemical properties are characterized before and after fire test, mainly with XRD, quantitative MAS NMR, electron probe micro-analysis, quantitative X ray micro-computed tomography and heat conductivity. Results show that GP foams are excellent thermal barriers, providing up to 251 °C less than for uncoated steel plate. Their porosity ranges between 25 and 81%, for typical pore sizes d50 from 0.5 to 3.0 mm 29Si MAS NMR shows that the proportion of GP cement only decreases from 60-68% to 53–58% after fire. SF expands and creates small pores in the coating, which is favorable to decrease heat conductivity by a factor of 2 whatever the foam.Show less >
Show more >This research investigates the fire resistance of novel geopolymer (GP) foams, based on alkali-activated metakaolin and silica fume (SF). Fresh GP foams are applied as coatings on steel plates. After one week curing, the foams are subjected to a flame burn-through test. Changes in their physico-chemical properties are characterized before and after fire test, mainly with XRD, quantitative MAS NMR, electron probe micro-analysis, quantitative X ray micro-computed tomography and heat conductivity. Results show that GP foams are excellent thermal barriers, providing up to 251 °C less than for uncoated steel plate. Their porosity ranges between 25 and 81%, for typical pore sizes d50 from 0.5 to 3.0 mm 29Si MAS NMR shows that the proportion of GP cement only decreases from 60-68% to 53–58% after fire. SF expands and creates small pores in the coating, which is favorable to decrease heat conductivity by a factor of 2 whatever the foam.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
European Project :
Administrative institution(s) :
Université de Lille
CNRS
INRA
ENSCL
CNRS
INRA
ENSCL
Collections :
Research team(s) :
Ingénierie des Systèmes Polymères
Submission date :
2021-06-23T08:43:18Z
Files
- 2021 06 J COMP part B Proof .pdf
- Version soumise (preprint)
- Open access
- Access the document