VG grades are known by the Indian government as the preferred type of bitumen for road construction. In 1991, the Bureau of Indian Standards adopted a new grading method for bitumen, named viscosity ...

The two main problems that occur in asphalt concrete (tarmac) surfaces are that wheel ruts are formed when the material is too soft, or that the surface cracks when too hard. Climate Considerations In ...

Greenvale Energy is on the path towards a commercial bitumen product after testwork at the Alpha project in Queensland recorded the highest conversion to date. GRV’s latest testwork shows company ...

Viscosity, or a fluid’s resistance to flow, is independent of the rate of shear or shear stress, at a given temperature, for Newtonian fluids. Non-Newtonian fluids such as polymer solutions often ...