Мodification of road bitumen with humic acids
Modifying road bitumen of the BND 70/100 brand with humic acids was carried out. In particular, the influence of the duration of the process and the amount of addition on the quality characteristics of the binder was studied. It was established that humic acids negatively affect the plastic properties of bitumen (deteriorate the softening temperature, penetration, and ductility), positively affect its elasticity, and have practically no effect on the ability of the binder to adhere to the surface of the mineral material.