INVESTIGATION OF THE EFFECT OF CALCINATION TEMPERATURE AND FINENESS OF KAOLIN FROM BALIKESİR REGION ON POZZOLANIC ACTIVITY

Authors : Nuri Işıldar, Mutlu İrem Tuncer, Metin Davraz, Şemsettin Kılınçarslan

Pages : 623-631

Doi:10.21923/jesd.1508001

View : 61 | Download : 51

Publication Date : 2025-06-27

Article Type : Research Paper

Abstract :The use of mineral additives in cement production supports an environmentally friendly production process by reducing the amount of clinker and significantly reducing CO2 emissions. Methacholine, obtained as a result of calcination of kaolin at high temperatures, is used effectively as a pozzolan. The study was carried out in two stages to determine the effect of calcination temperature and fineness on the pozzolanic activity index. In the first stage, kaolin was calcined at 3 different temperatures: 600°C, 750°C and 900°C. Mortar samples in accordance with the standard were prepared to determine the pozzolanic activity strength index depending on the calcination temperature. When the 28-day pozzolanic activity strength index results were examined, it was seen that kaolin calcined at 600°C provided the best strength value of 122%. In the second part of the study, the material calcined at 600 °C was ground to three different finenesses as 13800 cm2/g, 15900 cm2/g and 18700 cm2/g, and mortar samples were prepared to determine the pozzolanic activity strength index. As the fineness increased, the pozzolanic activity strength index values also increased.
Keywords : Kaolin, Metakaolin, İncelik, Basınç Dayanımı, Puzolanik Aktivite

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