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1. (WO2017198930) BINDER BASED ON CALCIUM ALUMINOSILICATE DERIVATIVES FOR CONSTRUCTION MATERIALS.

Pub. No.:    WO/2017/198930    International Application No.:    PCT/FR2017/051134
Publication Date: Fri Nov 24 00:59:59 CET 2017 International Filing Date: Fri May 12 01:59:59 CEST 2017
IPC: C04B 28/08
C04B 28/14
C04B 28/16
Applicants: SAINT-GOBAIN WEBER
Inventors: DUDDA, Udo
HESSELBARTH, Frank
Title: BINDER BASED ON CALCIUM ALUMINOSILICATE DERIVATIVES FOR CONSTRUCTION MATERIALS.
Abstract:
The present invention relates to a hydraulic binder comprising at least 80% by weight of a ground granulated blast-furnace slag and at least one accelerator of the hardening reaction, said accelerator comprising at least one source of calcium sulfate and at least one nucleating agent in the form of particles, the BET specific surface area of which is greater than 1 m2/g and the size of which is such that 50% of the particles have a mean diameter of less than 5 µm, said particles being chosen from calcium carbonates, magnesium carbonates, calcium magnesium carbonates, calcium silicate hydrates, aluminum silicate hydrates, alone or as a mixture. This binder may be used in a mortar and concrete composition which, once mixed with water, makes it possible to obtain construction materials.