	US 12,109,663 B2
	Method in dry-shake coating of a concrete floor
Mika Ahonen, Kyröskoski (FI)
Assigned to CONCRIA OY, Ylöjärvi (FI)
Appl. No. 17/298,244
Filed by CONCRIA OY, Ylöjärvi (FI)
PCT Filed Sep. 3, 2019, PCT No. PCT/FI2019/050622 § 371(c)(1), (2) Date May 28, 2021, PCT Pub. No. WO2020/109650, PCT Pub. Date Jun. 4, 2020.
Claims priority of application No. 20186027 (FI), filed on Nov. 30, 2018.
Prior Publication US 2022/0088736 A1, Mar. 24, 2022
Int. Cl. C04B 41/52 (2006.01); B24B 1/00 (2006.01); B24B 7/18 (2006.01); C04B 41/50 (2006.01); C04B 41/70 (2006.01); C04B 41/00 (2006.01)

CPC B24B 1/00 (2013.01) [B24B 7/18 (2013.01); C04B 41/5089 (2013.01); C04B 41/52 (2013.01); C04B 41/70 (2013.01); C04B 41/00 (2013.01)]

6 Claims

1. A method in dry shake coating of a concrete floor, said method comprising:

spreading an underlying layer of dry shake material on top of the concrete floor surface;

spreading a colloidal silica-based medium over the surface of the underlying dry shake layer before and/or during troweling the dry shake layer and before applying a next dry shake layer;

troweling the surface of the underlying dry shake layer followed by applying the next dry shake layer;

troweling the lastly spread dry shake layer of the concrete floor; wherein

the colloidal silica-based medium enhances bonding between sequentially-applied dry-shake layers and enables increasing an overall thickness of the dry shake coating.