EPJ Web of Conferences 6, 23005 (2010)
https://doi.org/10.1051/epjconf/20100623005

Early-age volume changes of extrudable reactive powder concrete

¹ Laboratoire de Matériaux Polymères aux Interfaces, Boulevard François Mitterand, 91025 Evry Cedex
² Laboratoire des Solides Irradiés, Ecole Polytechnique, 91128 Palaiseau Cedex, France
³ GeM, UMR CNRS 6183 – Research Institute of Civil Engineering and Mechanics, 58 rue Michel Ange, B.P. 420, 44606 Saint-Nazaire Cedex, France
⁴ Laboratoire d’Artois Mécanique et Habitat, Université d’Artois, route de l’Université, 62408 Béthune, France

^a e-mail : pierre.mounanga@univ-nantes.fr

Abstract

This article presents a study on the early-age autogenous deformations of Extrudable Reactive Powder Concretes (ERPCs), especially designed for the making of concrete pipes by extrusion. Different ERPC mixtures, with variable amounts of polycarboxylate superplasticizer (SP), have been investigated. Results on 28-day mechanical properties, early-age hydration rate, autogenous shrinkage and premature cracking risk are analyzed and discussed in relation with the ERPC mix parameters.