Investigation of the effect of consolidation ...
Document type :
Article dans une revue scientifique: Article original
DOI :
Permalink :
Title :
Investigation of the effect of consolidation on cement flow behaviour
Author(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
Journal title :
Advances in Cement Research
Abbreviated title :
Adv. Cem. Res.
Volume number :
32
Pages :
315-322
Publication date :
2020-07-01
ISSN :
0951-7197
English keyword(s) :
modellingrheological
rheological properties
compressive strength
rheological properties
compressive strength
HAL domain(s) :
Chimie/Catalyse
English abstract : [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 ...
Show more >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.Show less >
Show more >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.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Collections :
Research team(s) :
Catalyse pour l’énergie et la synthèse de molécules plateforme (CEMOP)
Submission date :
2022-03-02T07:14:44Z
2024-02-05T17:08:28Z
2024-02-05T17:08:28Z