公开(公告)号：US10144673B2

公开(公告)日：2018-12-04

申请号：US15560552

申请日：2016-04-20

Applicant: BASF SE

Inventor： Manfred Bichler ,  Martin Winklbauer ,  Torben Gaedt ,  Joachim Dengler ,  Christoph Hesse ,  Bernhard Mayr

IPC: C04B28/02 ,  C04B40/00 ,  C04B14/04 ,  C04B22/00 ,  C04B22/06 ,  C04B24/24 ,  C04B24/26 ,  C04B103/14

Abstract: The invention relates to a method for producing a calcium silicate hydrate-comprising hardening accelerator in powder form, which comprises the steps of (a) providing an aqueous suspension comprising calcium silicate hydrate; (b) mixing at least one calcium compound, selected from calcium acetate, calcium formate, calcium hydroxide, calcium oxide, and mixtures of two or more of said compounds, with the aqueous suspension comprising calcium silicate hydrate; and (c) drying the resulting mixture. The invention also relates to the hardening accelerator obtainable by this method, to the use thereof, and to building material mixtures which comprise the hardening accelerator.