Technology of Producing Sulfur-Asphalt Binders for Road Construction

Resumo

A technology has been developed for producing an asphalt binder for road construction based on oil distillation residues modified with elemental sulfur. A blend of asphalt base and elemental sulfur was exposed to the action of ultrasound with a vibratory power of 2.5 W/cm² and a frequency of 20 kHz at 160°C. The blend was heated exclusively by acoustic vibration energy. Sulfur-asphalt samples conforming to the BND 130/200 brand were obtained. Energy consumption can be reduced and asphalt binder production process can be accelerated by ultrasonic blending.