Binder based on activated ground granulated blast furnace slag useful for forming a concrete type material

US9856174B2 · kind B2 · utility

Assignee

• Stephan Steinkeller · AE

Inventor

• Gerhard Koch · Nagold, DE

Key dates

• Filing date: Sep 26, 2014
• Grant date: Jan 2, 2018
• Expiry date: Sep 26, 2034

Classification

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

Abstract

A binder material useful for forming a concrete type material includes, calculated on a dry, water and carbon dioxide free basis, a base component constituting 50-95 wt % of the binder material, the base component having ground granulated blast furnace slag and an activator component constituting 5-50 wt % of the binder material. The activator component includes aluminum sulfate and a sodium hydroxide generating compound. The final binder material includes, calculated on a dry, water and carbon dioxide free basis, ground granulated blast-furnace slag 35-95 wt %, aluminum sulfate AI2(SO4)3 1-25 wt %, and sodium hydroxide generating compound 4-35 wt %.