Single-phase hydraulic binder, methods for the production thereof and structural material produced therewith

US8226763B2 · kind B2 · utility

Assignee

• KARLSRUHER INSTITUT FÜR TECHNOLOGIE · DE

Inventors

• Guenter Beuchle · Karlsruhe, DE
• Peter Stemmermann · Karlsruhe, DE
• Uwe Schweike · Karlsruhe, DE
• Krassimir Garbev · Blankenloch, DE

Key dates

• Filing date: Jul 16, 2008
• Grant date: Jul 24, 2012
• Expiry date: May 3, 2029

Classification

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

Abstract

The invention relates to a monophase hydraulic binder containing silicon, calcium, oxygen and hydrogen atoms in an arrangement comprising silicate building units having an average connectedness of no more than Q1.5 and silanol groups, with none or a part of the calcium atoms being substituted for by a metal atom M[6]x+ sixfold or higher-coordinated with oxygen and/or none or a part of the silicon atoms being substituted for by a metal atom M[4]y+ tetrahedrally coordinated with oxygen, the molar ratio of[CaO+(x/2)·(M[6]x+Ox/2)]:[SiO2+M[4]y+Oy/2]having a value of 0.75 to 2.75, and the binder containing an H2O content of 3.5% by weight to 20% by weight, as well as a mixture containing this binder.Furthermore, the invention relates to methods for manufacturing the binder or a mixture containing this binder by converting calcium-containing and silicate-containing starting materials into a preproduct which at least in part contains a calcium hydroxosilicate, subsequent grinding of the calcium hydroxosilicate until the monophase hydraulic binder forms, and optionally drying the monophase hydraulic binder to an H2O content of 3.5% by weight to 20% by weight.Finally, the invention relates t…