US 12,227,457 B2
Admixture for a cementitious material to influence the rheology properties of the cementitious material
Karel Lesage, Nazareth (BE); and Geert de Schutter, Erpe-Mere (BE)
Assigned to Universiteit Gent, Ghent (BE)
Appl. No. 17/287,544
Filed by Universiteit Gent, Ghent (BE)
PCT Filed Oct. 25, 2019, PCT No. PCT/EP2019/079129
§ 371(c)(1), (2) Date Apr. 22, 2021,
PCT Pub. No. WO2020/089048, PCT Pub. Date May 7, 2020.
Claims priority of application No. 18203032 (EP), filed on Oct. 29, 2018.
Prior Publication US 2021/0317039 A1, Oct. 14, 2021
Int. Cl. C04B 24/32 (2006.01); B82Y 25/00 (2011.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01); C04B 24/26 (2006.01); H01F 1/34 (2006.01)
CPC C04B 24/32 (2013.01) [C04B 24/2647 (2013.01); H01F 1/344 (2013.01); B82Y 25/00 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method to control or influence rheological properties of a cementitious material, said method comprising the steps of
providing a flow of a cementitious material comprising an admixture, the admixture comprising cement particles and a compound comprising a backbone chain, said backbone chain being provided with at least one first functionality and at least one second functionality; said at least one first functionality being adapted to adsorb to said cement particles, said at least one second functionality being adapted to respond by activating, deactivating or changing an external trigger signal, said external trigger comprising an electric field, a magnetic field or an electromagnetic field, said responding of said at least one second functionality is influencing said rheological properties of said cementitious material by influencing said adsorption of said at least one first functionality with said cement particles and/or by influencing the interparticle interaction between said cement particles,
conveying said flow of a cementitious material through a channel and optionally through a nozzle;
applying said flow of said cementitious material in a formwork or to a work surface; and
activating, deactivating and/or changing an external trigger signal to activate or deactivate said at least one second functionality, said external trigger comprising an electric field, a magnetic field or an electromagnetic field.