THERMAL TREATMENT OF KAOLIN CLAY TO OBTAIN METAKAOLIN

被引：189
作者：
Ilic, Biljana R. [1 ]
Mitrovic, Aleksandra A. [1 ]
Milicic, Ljiljana R. [1 ]
机构：
[1] Inst Testing Mat, Belgrade, Serbia
来源：
HEMIJSKA INDUSTRIJA | 2010年 / 64卷 / 04期
关键词：
Kaolin; Metakaolin; Calcination; Dehydroxylation; POZZOLANIC ACTIVITY; CEMENT PASTES; HYDRATION; CONCRETE;
D O I：
10.2298/HEM1N01003220141
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The metakaolin was produced by thermal treatment (calcination) of the starting high-quality kaolin clay from Serbia. The optimal calcination parameters, for which nearly complete dehydroxylation of the material was achieved, are: temperature 650 degrees C and heating time of 90 min. The conversion of the kaolinite to metakaolinite was confirmed by XRD and IR analyses of the starting and thermally treated kaolin samples. The pozzolanic activity was determined by Chapelle test. The obtained value 0.65 g Ca(OH)(2)/g of metakaolin indicates that produced metakaolin may be used as supplementary cementitious material.
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页码：351 / 356
页数：6
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