Magnetic Susceptibility Properties of Portland Cement

Abstract

The raw materials for making cement consist of raw materials and auxiliary materials where the raw materials consist of Limestone (CaO) (± 80 %), Silica (SiO2) (± 10 %), Clay (Al2O3) (± 8 %), and Iron Sand (Fe2O3) (± 2%) while the auxiliary materials consist of Gypsum (Ca(SO4).2H2O), Pozzolan and Limestone (High Grade). The purpose of this study was to analyze the mineral content contained in iron sand (Fe2O3) used in cement mixtures. To see the mineral content in this cement, can use the magnetic method, one of which is the susceptibility method which is also assisted by the extraction method on cement to purify the iron sand contained in the cement later. The tool used is a Magnetic susceptibility meter type MS2B and extracted using strong and weak magnets 10 times. The extraction results with weak and strong magnets were obtained from 0.011759 gr to 0.35648 gr from 100 gr cement. Sensitivity test was carried out on cement samples with values ranging from 41.27 x 10-8 m3/kg to 44.2 x 10-8 m3/kg.