US 12,304,872 B2
Method for producing a composite insulating mineral construction element
Patrick Tintillier, Holderbank (CH); Nicolas Perez, Holderbank (CH); and Florence Serre, Holderbank (CH)
Assigned to HOLCIM TECHNOLOGY LTD, Zug (CH)
Appl. No. 18/044,932
Filed by HOLCIM TECHNOLOGY LTD, Zug (CH)
PCT Filed Sep. 17, 2021, PCT No. PCT/EP2021/075695
§ 371(c)(1), (2) Date Mar. 10, 2023,
PCT Pub. No. WO2022/058544, PCT Pub. Date Mar. 24, 2022.
Claims priority of application No. 20306064 (EP), filed on Sep. 18, 2020.
Prior Publication US 2023/0357092 A1, Nov. 9, 2023
Int. Cl. C04B 38/10 (2006.01); C04B 22/14 (2006.01); C04B 24/10 (2006.01); C04B 28/04 (2006.01); E04B 1/76 (2006.01); C04B 111/00 (2006.01); C04B 111/40 (2006.01)
CPC C04B 38/10 (2013.01) [C04B 22/148 (2013.01); C04B 24/10 (2013.01); C04B 28/04 (2013.01); E04B 1/7604 (2013.01); C04B 2111/00698 (2013.01); C04B 2111/40 (2013.01); C04B 2201/20 (2013.01); C04B 2201/30 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for producing a composite insulating mineral construction element comprising the following steps:
a) filling a cavity of a construction element comprising at least one cavity delimited by at least one inner wall at least partially having a water absorption rate of more than 5 g/(m2·s) at 10 minutes according to standard NF EN 772-11 of August 2011 with a foamed cement slurry comprising a cement being an hydraulic binder comprising a proportion of at least 50% of calcium oxide CaO and silicon dioxide SiO2, a metal salt selected from an aluminium, magnesium or iron salt and mixtures thereof, and a cellulose ether;
b) leaving the foamed cement slurry to set within the cavity resulting in the formation of a mineral foam;
wherein the foamed cement slurry comprises from 0.01 to 0.2% by weight of cellulose ether, relative to the weight of cement.