Clay characterizations in kampung kor and kampung seribong, kota bharu by using slip casting

The areas involved in this research are Kampung Kor and Kampung Seribong, Kota Bharu, Kelantan which is 15 km apart. The clay samples were collected along the same river bank but at different location. The aim of this study is to characterize and compare the quality and strength of the clay soil, since the color of these two clays were different. In this experiment, clay samples were prepared through slip casting method and fired at 900, 1000, and 1100 °C for 8 hours. Physical and mechanical testing were conducted to determine the properties of the clay. The physical tests in this experiment were Bending Modulus, MOR and Impact Strength, while the mechanical test is a percentage of bulk density, porosity and shrinkage. The results show that the clays were not only different in color intensity but also the strength and mineral percentages, even though the clay samples were collected at the same river. The characteristic of clay from Kampung Kor has whitish-grey colour; smooth finishing surface; and higher bending modulus with 30508.14 N/mm2, thus it is suitable for producing tiles, sewer pipes and flower pot products. While the clay from Kampung Seribong has brownish-grey colour and gritty textured surface and possible to be produced as pottery products and clay-based souvenirs. Moreover, it has lower bending modulus with 25466.82 N/mm2 than the clay in Kampung Kor. Thus, the different location of the clay sample contributed to the physical and mechanical properties of the clay.