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Emulsions effects on the friction on the formwork/concrete interface



Author(s): Laiymani Issam, Libessart Laurent, Hammouni Salim, Djelal Chafika, Vanhove Yannick
Paper category: Proceedings
Book title: International RILEM Workshop on Rheological Measurements of Cement-based Materials IRWRMC’18
Editor(s): Chafika DJELAL, Yannick VANHOVE
Print-ISBN: 978-2-35158-230-5
e-ISBN: 978-2-35158-231-2
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 100 - 104
Total Pages: 5
Language: English


Abstract: To ensure an easy demoulding of the concrete, the release agent must form a homogeneous film on the formwork to resist the friction of the concrete on the walls of the formwork. The adherence or the affinity of oil with the support was studied via the Solid/Liquid energy adhesion. This energy was calculated using the Zisman equation which utilizes the angle of drop and the surface tension Liquid/Vapour. Two emulsion formulations were compared. To correlate these results, the behavior of the oil films to the interface concrete/formwork is studied with a plane/plane tribometer for the complex mediums.


Online publication : 2019
Publication type : full_text
Public price (Euros) : 0.00