公开(公告)号：US20200276729A1

公开(公告)日：2020-09-03

申请号：US16645964

申请日：2018-09-05

Applicant: HOLCIM TECHNOLOGY LTD.

Inventor： Matthieu HORGNIES ,  Fabienne LEGRAND ,  Gérard MOLINÈS ,  Laurent MEUNIER ,  Isabelle DUBOIS-BRUGGER

IPC: B28B19/00 ,  B32B7/12 ,  B32B13/00 ,  B24C1/06

Abstract: In a method of manufacturing a concrete element having a functional layer, a rear side of the functional layer being bonded to the concrete element by an adhesive, the roughness of the rear side of the functional layer is increased by sand blasting, wherein the sand blasting is carried out for obtaining a surface roughness Ra of the rear side of the functional layer of between 1.5 μm and 6 μm.