Investigation of the effect of consolidation ...
Type de document :
Article dans une revue scientifique: Article original
DOI :
URL permanente :
Titre :
Investigation of the effect of consolidation on cement flow behaviour
Auteur(s) :
Turki, Djamel [Auteur]
Saidani, Messaoud [Auteur]
Coventry University
Belarbi, El Habib [Auteur]
Laboratoire Synthèse et Catalyse [Tiaret] [LSCT]
Fatah, Nouria [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Saidani, Messaoud [Auteur]
Coventry University
Belarbi, El Habib [Auteur]
Laboratoire Synthèse et Catalyse [Tiaret] [LSCT]
Fatah, Nouria [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Titre de la revue :
Advances in Cement Research
Nom court de la revue :
Adv. Cem. Res.
Numéro :
32
Pagination :
315-322
Date de publication :
2020-07-01
ISSN :
0951-7197
Mot(s)-clé(s) en anglais :
modellingrheological
rheological properties
compressive strength
rheological properties
compressive strength
Discipline(s) HAL :
Chimie/Catalyse
Résumé en anglais : [en]
One of the main problems affecting the flow of cement bulk powder is the formation of cohesive arching at the outlet of the hopper, causing blockage of the silo opening and bridge formation. A simple concept is established ...
Lire la suite >One of the main problems affecting the flow of cement bulk powder is the formation of cohesive arching at the outlet of the hopper, causing blockage of the silo opening and bridge formation. A simple concept is established which outlines these complications. In this context, the interactions of particles lead to a high degree of consolidation of the cement powder and an increase of adhesion force due to the small size and the large surface area of the cement particles. The results from the consolidation test and the flow properties (cohesion) show that the cement powder flow is mainly controlled by internal forces (Van der Waals and adhesion forces) and external forces. These forces have a direct influence on the powder structure, leading to a variable packing behaviour. Since the problem is attributable mainly to interparticle forces, before storage of the cement powder in the silo, the powder should be fluidised with air at a high velocity to disintegrate the cohesive structure and to overcome this undesirable property of cement flow.Lire moins >
Lire la suite >One of the main problems affecting the flow of cement bulk powder is the formation of cohesive arching at the outlet of the hopper, causing blockage of the silo opening and bridge formation. A simple concept is established which outlines these complications. In this context, the interactions of particles lead to a high degree of consolidation of the cement powder and an increase of adhesion force due to the small size and the large surface area of the cement particles. The results from the consolidation test and the flow properties (cohesion) show that the cement powder flow is mainly controlled by internal forces (Van der Waals and adhesion forces) and external forces. These forces have a direct influence on the powder structure, leading to a variable packing behaviour. Since the problem is attributable mainly to interparticle forces, before storage of the cement powder in the silo, the powder should be fluidised with air at a high velocity to disintegrate the cohesive structure and to overcome this undesirable property of cement flow.Lire moins >
Langue :
Anglais
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Collections :
Équipe(s) de recherche :
Catalyse pour l’énergie et la synthèse de molécules plateforme (CEMOP)
Date de dépôt :
2022-03-02T07:14:44Z
2024-02-05T17:08:28Z
2024-02-05T17:08:28Z