公开(公告)号：US20220306535A1

公开(公告)日：2022-09-29

申请号：US17639028

申请日：2020-08-27

Applicant: HOLCIM TECHNOLOGY LTD

Inventor： Florent DALAS ,  Sébastien GEORGES ,  Cyril MOUNIE ,  Florent SKAWINSKI

IPC: C04B28/04 ,  C04B14/28 ,  C04B22/12 ,  C04B24/38 ,  C04B38/02 ,  C04B40/00

Abstract: A method for the production of a cavity filled with a low-density mineral foam includes (i) preparing a cement slurry including Portland cement; ultrafine particles of which the D50 is from 10 to 600 nm; a water reducing agent; a manganese salt; and water; wherein the mass ratio of manganese salts/Portland cement is below 0.014; (ii) adding to the cement slurry obtained after (i) a gas-forming liquid including a gas-forming agent; and a viscosity-modifying agent which is a polymer chosen among anionic bio-based polymer, amphiphilic bio-based polymer, alkali swellable acrylic polymer and mixture thereof; to obtain a foaming slurry; (iii) filling the cavity with the foaming slurry obtained at (ii); (iv) leaving the foaming slurry to expand within the cavity.