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Role of demoulding agents during self-compacting concrete casting in formwork



Title: Role of demoulding agents during self-compacting concrete casting in formwork
Author(s): C. Djelal, Y. Vanhove, P. De Caro, A. Magnin
Paper category : journal
Serial title: Concrete Science and Engineering
Abreviated Serial title: Concr. Sc. Eng.
ISSN: 1295-2826
Publisher: RILEM Publications SARL
Volume: 4
Issue: 15
Issue date: 2002-09-01
Publication year: 2002
Pages: 470 - 476
Total Pages: 7
Nb references: 16
Language: English


Abstract: The use of “super-plasticisers” to obtain concretes that
are highly workable, easy to place in formwork and
require no vibration has spread throughout Europe in the
last few years. The placing process for fresh so-called Self-
Compacting Concrete (SCC) is linked to the friction that
occurs at the concrete/wall interface.
A rectilinear movement tribometer has been developed.
Tests performed with certain modifications of the
interface conditions show that friction is governed by the
characteristics (viscosity, tensioactivity, etc.) of the
demoulding agents used. The interface appears to
undergo two types of phenomena:
– shear stress in the thick lubricating layer, which entails
low shear stresses,
– granular behaviour. The shear stress is higher in the second
case.


Online publication: 2002-06-20
Classification: Scientific Reports
Publication type : full_text
Public price (Euros): 0.00


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