Patent ID: 7740701
Filing Date: 2010-06-22
Classification: C04B,Y02W

Abstract:
1. A hydraulically setting mortar composition containing at least one hydraulically setting component, at least one lightweight filler, at least one cellulose ether, at least one setting retarder and optionally further additional additives, including fillers and dispersion powders, wherein: a. for a mixing water requirement of approximately 20 to 45 wt. %, based on the dry content of the mortar composition, a1. the weight ratio of the lightweight filler to the cellulose ether is approximately 0.001:1 to 10:1 and a2. the weight ratio of the setting retarder to the cellulose ether is approximately 0.3:1 to 10:1 and b. in the case of a mixing water requirement of approximately 45 to 100 wt. %, based on the dry content of the mortar composition, b1. the weight ratio of lightweight filler to cellulose ether is approximately 0.01:1 to 30:1 and b2. the weight ratio of setting retarder to cellulose ether is 0.07:1 to 10:1 and c. the lightweight filler used has a bulk density of less than approximately 600 g/l and at ambient temperature a water absorption capacity of approximately 80 wt. % or higher; wherein at least one hydraulically setting component is a Portland cement.