Comparison of asphalt mixtures with standard and low-temperature bitumen binders

摘要

The general trend of increasing the protection of environment and the efforts to minimise the energetic costs of production are apparent also in the production of asphalt mixes. The requirement to decrease the consumption of energy is a logical one as our goal is the most economic and sustainable use of non-renewable and renewable sources (8,21 of fuel oil is consumed in average for the production of 1 ton of the asphalt mix). There is a proven direct relationship among the volume of emissions, energy demands and the range of working temperatures as well as economically clearly defined relationship between costs and consumed energy. On the other hand following such requirements and developing technologies consuming less energy should not impact the performance and mechanical or rheological characteristics of pavement construction. The increasing traffic intensity and bearing capacities on the pavement are then the second motivation factor. The paper presents a comparison of selected mechanical and rheological properties of compacted asphalt mixes with standard and low-temperature bitumen binders, with respect to the influence of used additives on the properties of asphalt mix.