| Popis: |
India is the fastest growing country among developing countries of the world wherein infrastructural growth road development is utmost essential for the country. But with time bitumen becomes more stiff and brittle due to changes in molecular structure of bitumen and increase in viscosity too that adversely affect the performance of pavement as it leads to the crack on pavement, rutting, fatigue cracks, loss of visco-elasticity of binder. To overcome this problem an attempt is made to modify the properties of VG-40 binder by the addition of Zycotherm EZ with suitable dosages. Laboratory investigation is carried out to evaluate the properties of VG-40 binder with and without modifier. Also, effect of heat and air on a moving film of semi-solid binder is determined using RTFOT in accordance with ASTM D 2872 (2006) |
