Abstract
Clinker raw material mixtures made from the combination of three different coal ashes with clays and carbonates were studied for their chemical and mineralogical characteristics on calcination. Using different combinations of ash with other raw materials, it was possible to produce a mixture with the desirable chemical composition similar to that produced by the ordinary clay-carbonate mixtures. After heating, both mixtures yielded clinkers with the desirable mineralogical assemblages. However, it was also found that the presence of refractory phases in the ash slowed the crystallization of clinker minerals, by not releasing silica and alumina for reactions. This kinetic influence was found to be of relatively small magnitude and does not defract from the desirability of using coal ash as an additive raw material in cement manufacture.
| Original language | English |
|---|---|
| Pages (from-to) | 503-512 |
| Number of pages | 10 |
| Journal | Cement and Concrete Research |
| Volume | 18 |
| Issue number | 4 |
| DOIs | |
| State | Published - Jul 1988 |
Bibliographical note
Funding Information:Acknowledgement This research was carried out at the geochemistry division of the Geological Survey of Israel. The research was financed by the Geological Survey of Israel and by the Earth Science Research Administration at the Ministry of Energy and Infrastructure.