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Use of a high-calcium fly ash in blended type cement production |
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| Authors: | Joanna Papayianni |
| Affiliation: | Department of Civil Engineering, Aristotle University of Thessaloniki, Laboratory of Reinforced Concrete, Box 482, 54006, Thessaloniki, Greece |
| Abstract: | Eighty percent of fly ash produced by Greek Public Power Corporation (PPC) is of a high-calcium variety. It has a low insoluble residue and a high content in CaO as well as in SO3. It also shows self-cementing properties. About 20% of it is used by cement companies in blended type cement production. In this paper mechanical strengths and some other characteristics concerning blended cement and concrete made with it are presented. Special difficulties anticipated in using such a marginal fly ash in cement are also mentioned. |
| Keywords: | Blended cement high-calcium fly ash sulfates homogeneity mechanical strength concrete strength development |
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