Concrete article comprising a surface with low open-porosity

(10) WO 2012/020012 A1
(22) 9 August 2011 (09.08.2011)
(43) 16 February 2012 (16.02.2012)
(71) LAFARGE, 61 rue des Belles Feuilles, F-75116 Paris (FR)
(57) The invention relates to an article comprising an article comprising an element made of a high performance concrete or an ultra high performance concrete, said element comprising a surface; and particles of calcium dihydroxide covering more than 60 % of the surface. It also relates to a process for the preparation of such an article comprising the coating walls of a mould with a demoulding composition comprising an aqueous solution comprising...

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