Relation between working properties and structural properties from 27Al, 29Si and 31P NMR and XRD of acid-based geopolymers from 25 to 1000°C

Hélène Celerier , Jenny Jouin (1) , Ameni Gharzouni (1) , Virginie Mathivet (2) , Isabel Sobrados (3) , Nicolas Tessier-Doyen (4) , Sylvie Rossignol (1)

1 IRCER-AXE3 - IRCER - Axe 3 : organisation structurale multiéchelle des matériaux
2 DMAS, ONERA, Université Paris Saclay (COmUE) [Châtillon]
3 ICMM - Instituto de Ciencia de Materiales de Madrid
4 IRCER-AXE1 - IRCER - Axe 1 : procédés céramiques

Highlights: (maximum 85 characters, including spaces, per bullet point).  Acid-based geopolymers display different processing-dependent working properties.  Acid-based geopolymers are mostly composed of Al-O-P and Si(OH)4 networks.  The quantities of Al-O-P and unreacted metakaolin govern the thermal resistance.  The increase of the Young's modulus is related to a higher thermal resistance.  Ordered structures and low amounts of physisobed water lead to water resistance.

Domaines: Chimie; Matériaux; Sciences de l'ingénieur [physics]; Matériaux

Hélène Celerier, Jenny Jouin, Ameni Gharzouni, Virginie Mathivet, Isabel Sobrados, et al.. Relation between working properties and structural properties from 27Al, 29Si and 31P NMR and XRD of acid-based geopolymers from 25 to 1000°C. Materials Chemistry and Physics, 2019, 228, pp.293-302. ⟨10.1016/j.matchemphys.2019.02.049⟩. ⟨hal-02333610⟩