Improvement of tucco properties through aging at elevated temperatures and high humidity level

(22) 04.08.2017

(43) 20.02.2020

(57) The invention pertains to a method for stabilizing stucco wherein – a fresh stucco is provided; – water is added to the fresh stucco to obtain moistened stucco, and – the moistened stucco is maintained at a temperature of at least 30 °C for a time interval of at least 30 minutes to obtain a stabilized stucco. The process allows inter alia for an easy adjustment of the activity of the stabilized stucco, which is useful to e.g. adjust setting time of a corresponding stucco slurry. The invention further pertains to a method for producing gypsum plasterboards, wherein a stabilized stucco obtained with the above method is used.

(71) Knauf Gips KG (DE)