Use of alkali activated high-calcium fly ash binder for kaolin clay soil stabilisation: Physicochemical evolution - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Construction and Building Materials Année : 2019

Use of alkali activated high-calcium fly ash binder for kaolin clay soil stabilisation: Physicochemical evolution

Résumé

This study addresses the use of alkali activated high-calcium fly ash-based binder to improve engineering characteristics of soft clay-rich soils as an alternative to common stabilisers. The physico-chemical reaction sequence has been investigated by considering the binder alone and the binder mixed with kaolin. An insight into the reactivity evidenced that calcium-containing phases derived from high-calcium fly ash represent the reactive phases and, hence, pozzolanic activity is the dominant process. New compounds are formed, thenardite Na2SO4 and an amorphous silicate consisting of chains combined with calcium probably incorporating three-dimensional four-fold aluminium environments.
Fichier principal
Vignette du fichier
S0950061818331817.pdf (1.79 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-01976909 , version 1 (21-10-2021)

Licence

Identifiants

Citer

Elodie Coudert, Michael Paris, Dimitri Deneele, Giacomo Russo, Alessandro Tarantino. Use of alkali activated high-calcium fly ash binder for kaolin clay soil stabilisation: Physicochemical evolution. Construction and Building Materials, 2019, 201, 14p. ⟨10.1016/j.conbuildmat.2018.12.188⟩. ⟨hal-01976909⟩
101 Consultations
97 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More