	US 12,252,447 B2
	Multi-component inorganic capsule anchoring system based on ground-granulated blast-furnace slag
Mark Whittaker, Landsberg am Lech (DE); and Markus Schönlein, Gilching (DE)
Assigned to Hilti Aktiengesellschaft, Schaan (LI)
Appl. No. 17/997,702
Filed by Hilti Aktiengesellschaft, Schaan (LI)
PCT Filed May 6, 2021, PCT No. PCT/EP2021/062013 § 371(c)(1), (2) Date Nov. 1, 2022, PCT Pub. No. WO2021/228684, PCT Pub. Date Nov. 18, 2021.
Claims priority of application No. 20174879 (EP), filed on May 15, 2020; application No. 20174882 (EP), filed on May 15, 2020; and application No. 20174887 (EP), filed on May 15, 2020.
Prior Publication US 2023/0167033 A1, Jun. 1, 2023
Int. Cl. C04B 40/06 (2006.01); C04B 7/153 (2006.01); C04B 14/06 (2006.01); C04B 28/08 (2006.01); C04B 40/00 (2006.01)

CPC C04B 40/0641 (2013.01) [C04B 7/1535 (2013.01); C04B 14/06 (2013.01); C04B 28/082 (2013.01); C04B 40/0039 (2013.01)]

20 Claims

1. A two-component inorganic capsule anchoring system for chemical fastening of anchors, bolts, screw anchors, screw bolts, and post-installed reinforcing bars in mineral substrates, comprising:

a curable powdery ground-granulated blast-furnace slag-based component A, and

an initiator component B in aqueous-phase for initiating a curing process,

wherein the powdery ground-granulated blast-furnace slag-based component A comprises silica dust,

wherein component B comprises an alkali- or alkaline earth-hydroxide, alkali- or alkaline earth-carbonate, or alkali- or alkaline earth-sulfate component,

wherein components A and B are present in a capsule and are separated within the capsule to inhibit reaction between components A and B,

wherein the capsule is a two-component inorganic plastic or foil capsule that is a capsule-in-capsule or foil-in-foil system,

wherein the A and B components are kept separate by walls or foil bags,

wherein components A and B react during the chemical fastening, and

wherein component B does not contain a filler.