ACCELERATOR MIXTURE AND METHOD OF USE

摘要

The invention concerns an alkali -free and HF-free accelerator mixture which contains aluminium in oxidation state 3, sulphate and hexaf luorosilicic acid, a process for the preparation of said accelerators and the use of said accelerators for the coating of substrates with concrete or mortar. Furthermore the invention relates to concrete or mortar containing accelerators according to the invention and the hardened layers produced by applying the accelerators to concrete or mortar. The invention relates also to the use of hexaf luorosilicic acid as a stabilizer.