Innovative binder based on activated fly ash for products with chemical and corrosive load

摘要

Cement based products are in general not resistant against acids. Ca-ions built during the hydration dissolve in small quantities in water and cause efflorescence as well as spalling inside the concrete matrix. To avoid such corrosive attacks or damages to the concrete matrix it is commonly attempted to reduce the cementitious content by mixing the concrete with a certain amount of latent hydraulic or pozzolanic materials. The author describes a new binder system which provides the possibility to reduce the cementitious content to zero by activating fly ash with additives.