A SOLIDIFICATION AND HARDENING ACCELERATOR FOR HYDRAULIC BINDERS AND PROCESS FOR ITS PREPARATION

摘要

Fluoride-free solidification and hardening accelerator comprises a sulfate, aluminum and 1-16 wt.% organic acid. The molar ratio of aluminum to sulfate is less than 0.83. Independent claims are also included for the following: (1) Mixture containing a binder and the above accelerator; and (2) Method for accelerating the solidification and hardening of hydraulic binders using the accelerator.