S19 Structural examinations and application of the perlite of the Republic of Macedonia

Филип Јовановски

Благица Цекова

Perlite represents volcanic glass. The components of the perlite are: quartz, plagioclass, K-feldspat, biotite, muscovite and in small amounts zirconium, chalcopyrite and apatite. This material origins from magmatic rocks. The obtained chemical analyzes show that SiO₂ is dominant oxide with 75.47 mass% and Al₂O₃ 12.77 mass%. and small amount of Fe₂O₃, 0.94 mass%. The water content is in the range of 2-5%. The perlite has crystalline structure, proved by IR- analyzes. The IR spectrum contains characteristic picks for perlite: strips for OH groups, molecular water and characteristic strips for Si – O – Si bands. The natural perlite can be modified by alumo-silicate gel and by thermal processing and the obtained expanded perlite can be used in civil and agricultural engineering. In the frame of this work the obtained results are presented in table and graphical forms.

Key words: perlite, chemical analyze, structural investigation

Structural examinations and application of the perlite of the Republic of Macedonia