Dependence of the asphalt sample composition on its tensile strength

Opisana je obrada rezultata mjerenja vlačne čvrstoće asfaltnih uzoraka različitog sastava kojom je nađena ovisnost čvrstoće o sastavu asfaltnog uzorka. Vlačna čvrstoća mjerena je indirektnom metodom, a sastav asfaltnog uzorka definiran je prema prostornom modelu u kojem su komponente izražene volumnim koncentracijama. Traženjem trenda međusobne ovisnosti i statističkom obradom rezultata mjerenja nađena je funkcionalna ovisnost vlačne čvrstoće asfaltnog uzorka o njegovu sastavu.The analysis of results obtained by measuring tensile strength of asphalt samples of different composition, is described. It was established that the tensile strength is dependent on the asphalt sample composition. The tensile strength was measured by indirect method, and the asphalt sample composition was defined based on the space model in which components were presented by volume concentrations. After analysis of interaction patterns and following statistical processing of measurement results, it was established that the asphalt sample tensile strength is functionally dependent on its composition

Separation of Acids from Asphalts

A procedure has been devised for the rapid separation of acids from asphalts using a modified soxhlet filled with potassium hydroxide treated silica. Acids from a whole air blown asphalt and from the maltene and asphaltene fractions from thls asphalt were extracted by this procedure and characterized by Infrared spectroscopy