Exploitation of kaolins in concrete technology
Abstract
The subject of this dissertation is the Exploitation of Kaolins in Concrete Technology. Kaolinite, the main mineral in kaolin, is transformed, after thermal treatment, in metakaolinite, a material with a remarkable pozzolanic reactivity. The target of this work is the exploitation of Hellenic poor kaolinitic deposits for the production of metakaolin and its use for the production of high performance concrete. The dissertation comprises three well defined stages. Thorough study of the kaolin thermal treatment and the reactivity of the produced metakaolin. This stage includes i) the selection and full characterization of Hellenic kaolins having different chemical and mineralogical composition, ii) the optimization of thermal treatment as far as time, temperature and fineness are concerned, iii) the investigation of the relation between the kaolin's structure and the reactivity of the produced metakaolin and iv) the study of the pozzolanic reaction of metakaolin. As it is concluded the cr ...
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