New building materials. A contribution to environmental protection. Subproject: Fly ash cement
Abstract
Fly ash cement was developed from a mixture of Portland cement and fly ash as a hydraulic binding agent. In laboratory investigations, fly ash cement was produced by homogenizing Portland cement, clinkers, and fly ash as well as by grinding Portland cement, clinkers, gypsum and fly ash together. The experiments indicate that grinding the components together gives higher compressive strength than grinding separately, followed by homogenizing. Investigations were conducted in which the fly ash cement was produced by grinding the components together with a fly ash content of 30% by weight. This cement meets specifications and fits into the range of the cement standard DIN 1164. For the Federal Republic of Germany, it is officially permitted for the first time for construction purposes as fly ash cement, designated as FAZ 35 F.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- December 1980
- Bibcode:
- 1980STIN...8212285D
- Keywords:
-
- Ashes;
- Cements;
- Construction Materials;
- Environment Protection;
- Grinding (Comminution);
- Binders (Materials);
- Gypsum;
- Homogenizing;
- Product Development;
- Standardization;
- Engineering (General)