New Demoulding Process for Self-Compacting Concrete without Release Agents

Author(s): Yannick Vanhove, Chafika Djelal, Laurent Libessart
Paper category: Conference
Book Title: 8th International RILEM Symposium on Self-Compacting Concrete - SCC 2016
Editor: Kamal H. Khayat
ISBN: 978-2-35158-156-8
e-ISBN: 978-2-35158-157-5
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 295-305
Total Pages: 11
Language: English

Abstract: A new demoulding process based on concrete polarization using electric potential is applied at a low temperature of 8±2°C. This technique is an alternative solution to compensate disadvantage and some risks associated with the use of mineral-based oil due to its petrochemical origin. The investigated mixtures, commonly used for concrete wall, are a Self Consolidating Concrete and a Normal Concrete. Results indicate that the proposed polarization technique can provide an effective means to separate the concrete and the formwork without demoulding oil. Tests realized on site show very good facing quality of the concretes without attachment points. A chromatography analysis on the pore solution of the concrete and on the transported water by electro-osmosis shows that ions concentrations are not affected.

Online publication: 2016
Publication Type: full_text
Public price (Euros): 0.00