description Bitumen VG-40 is special formulated bitumen, which is obtained by a technique of physical/chemical modification that alters the chemistry and balance of the bituminous components to a desired optimum. They are formulated to resist both pavement rutting at higher temperatures and thermal shrinkage cracking at lower temperatures. In addition, bitumen VG-40 better withstand fatigue […]
description Bitumen Grade VG 30 It is a kind of bitumen, which is produced during the process of oxidation of vacuum bottom in distillation tower and is categorized based on its viscosity grade. The main common usage of bitumen VG-30 is primarily used to construct extra heavy duty Bitumen pavements that need to endure substantial […]
description Viscosity Grade bitumen is specified by ASTM Standard D3381-09 and AASHTO M226-80 (2008). VG Bitumen specifications cover by Viscosity at 60 ̊C (140 °F). We have two methods of grading: • Standard Viscosity Grade Bitumen (AC-Grades), in which the Viscosity of the standard bitumen (asphalt) is measured at 60 ºC (140 ºF). • RTFOT […]
description According to viscosity (degree of fluidity) grading, higher the grade, stiffer the Bitumen. Tests are conducted at 60 C and 135 C, which represent the temperature of road surface during summer (hot climate, similar to northern parts of India) and mixing temperature respectively. The penetration at 25 C, which is annual average pavement temperature, […]
description Viscosity Grade Bitumen (Asphalt) is a Bitumen grade mostly used as a Paving Grade and it’s suitable for road construction and for the asphalt pavements producing with premier attributes. VG Bitumen is usually used in the production of hot mix asphalt. Viscosity Grade Bitumen is petroleum grade bitumen, which produced from fractional vacuum bottom […]
description The viscosity grading system is more comprehensive compared to the penetration grading system. Viscosity is the conversion of fluidity. It’s a general concept for the texture of substances. Chemically speaking, viscosity is applied as a consistency measurement. Viscosity test is conducted at 60 c (the maximum pavement temperature). Good to know that the measurement […]
description Asphalt cement grade of bitumen is one of the main categories of viscosity grade bitumen. The American Association of State Highway Official (AASHTO) has classified viscosity grade bitumen into two categories as follow. First one is AC, which stands for Asphalt Cement, and the second one is AR, which is the abbreviated form of […]
description Standard Viscosity Grade Bitumen AC , in which the Viscosity of the standard bitumen (asphalt) is measured at 60 degrees C (140 degrees F). It is usually used as a Paving Grade Bitumen suitable for road construction and for the production of asphalt pavements with superior properties. This grade of Bitumen is mainly used […]
description At the bitumen production reactor, during the air acting, the mixture of the two Vacuum Bottom (VB) and Vacuum Silas (VS) feedstock is put under a degree of pressure and temperature (between 200-300˚C) of which the hydrogen atoms content in the bitumen molecules oxidized, and obtains with higher hydrocarbons polymerization reaction that has lower […]
description At the bitumen production reactor, during the air acting, the mixture of the two Vacuum Bottom (VB) and Vacuum Silas (VS) feedstock is put under a degree of pressure and temperature (between 200-300˚C) of which the hydrogen atoms content in the bitumen molecules oxidized, and obtains with higher hydrocarbons polymerization reaction that has lower […]
