Tables of penetration grade asphalt
Performance Grade Performance Grade Performance Grade PG bitumen is bitumen which is graded based on its performance at different temperatures. The Long-Term Pavement Performance LTPP has given certain algorithm to calculate the temperature of the pavement based on the temperature of the air above. From this, the highest and the lowest temperatures of the pavement is calculated and the bitumen that performs well in that temperature range is selected. Penetration grading and viscosity grading are somewhat limited in their ability to fully characterize asphalt binder for use in Hot Mix Asphalt HMA pavement. Therefore, as part of the Superpave research effort new binder tests and specifications were developed to more accurately and fully characterize asphalt binders for use in HMA pavements.
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PENETRATION GRADE BITUMEN
What will be the equivalent PG- Grade of Pen 40/50 asphalt binder?
With the years, the mode of characterization of bitumen was felt to be changed. In fact, there is a huge gap in India between proper characterization of bitumen and its implementation in the refineries true to the specification and the ambitious planning of creation of important public assets in the highway sector whose durability and serviceability is very important towards the socioeconomic improvement of the country. In this paper, an attempt has been made to find out the changes of characterization of bitumen mainly in Indian context with the technical justifications behind them. A brief description of the world-wide scenario in this field has also been enumerated in this paper. At that time, all bitumen available was natural bitumen.
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Penetration/Viscosity Graded Asphalt Cements
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