Binder made of blast-furnace slag

US9266775B2 · kind B2 · utility

Assignee

• SAINT-GOBAIN WEBER · FR

Inventors

• Frank Hesselbarth · Recklinghausen, DE
• Udo Dudda · Bochum, DE

Key dates

• Filing date: Jul 17, 2013
• Grant date: Feb 23, 2016
• Expiry date: Jul 17, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P40/10
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A binder for construction materials containing a ground granulated blast furnace slag and at least one mono-, di- or trivalent metal salt chosen from bismuth, copper, silver or tin salts. The salt is capable of forming, during mixing with said slag, a metal sulfide for which the solubility product KSP, measured at 25° C., is less than 10−10.