Title :

Comparative study of the tribological behaviour of emulsions and demoulding oils at the concrete/formwork interface

Author(s) :

Libessart, Laurent [Auteur correspondant]
Laboratoire Génie Civil et Géo-Environnement [Béthune] [LGCgE]
Djelal, Chafika [Auteur]
Laboratoire Génie Civil et Géo-Environnement [Béthune] [LGCgE]
de Caro, Pascale [Auteur]
Laboratoire de Chimie Agro-Industrielle [LCA]
Laiymani, Issam [Auteur]
Laboratoire Génie Civil et Géo-Environnement [Béthune] [LGCgE]

Journal title :

Construction and Building Materials

Publisher :

Elsevier

Publication date :

2020

ISSN :

0950-0618

English keyword(s) :

Tribometer
Friction
Emulsion
Adhesion energy
Interface
Demoulding oil

HAL domain(s) :

Chimie

English abstract : [en]

To ensure a performing demoulding, a release agent must resist the friction of concrete on the formwork. Emulsions are interesting alternatives that leads to a reduced consumption of oil on construction sites. The behaviours ...
Show more >To ensure a performing demoulding, a release agent must resist the friction of concrete on the formwork. Emulsions are interesting alternatives that leads to a reduced consumption of oil on construction sites. The behaviours of two commercial emulsions are compared with two conventional demoulding oils. The adhesion energy calculated were favourable to the emulsions. The water evaporation kinetics leads to the measurements of film thickness. Tests with the tribometer have shown that the films produced from the emulsions generate a friction reduction of 30% and 40% at the concrete/formwork interface. Such performance can be explained by Wenzel's state of wettability, which facilitates the film fit into the formwork roughness.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

• Laboratoire Génie Civil et géo-Environnement (LGCgE) - ULR 4515

Source :

Harvested from HAL

Submission date :

2025-02-26T10:21:57Z