دراسة اثر مصدر البتومين على خواص الخلطات الخرسانية

Abstract

The importance of roads is obvious to every body as it is considered one of the most important factors of infrastructure for any state . The importance of the design an aspha mixture is due to its preservation and continuity on the road since it is the most costly components of the mixture depends on the components of the mixture and the type of piles and bitumen and the method of design and execution . Since asphalt is the basic component and the bond in the asphalt mixture therefore care must be taken that the specified technical requirement in the specification are realized . This research is for the study of the effect of the source of bitumen on the characteristics of the asphalt mixture Asphalt 60/70 from three different sources (Egypt – Soudi Arabia and Iran) were used in Khartoum state according to the specific ations to make three asphalt mixtures and this was done after camying oil the physical experiments on bitumen bearing in mind that the type of pile used in the study was on source from tebol toriya from one the quarries. The research applied marshals method to evaluate the asphalt mixture . BAND2 programme was used to study the characteristics of asphalt and asphalt mixture by using loading time at different degrees of temperature and the study concluded that conformity in the bitumen ratio , change in mixing time , some differences in asphalt mixture characteristics and the difference in the degree of elasticity affects the thrust indicator. This research recommends carrying out more experiments and studies of the remaining chemical and physical characteriss of asphalt and asphalt mixture due to their availability in Sudan laboratories at the time being.