Tables of penetration grade asphalt
Table 1. IP 58 80 max. IP 58 70 80 80 90 max. Polymer-modified bitumens are not currently covered by any British Standard. For polymer-modified bitumens, information on specifications and MSDSs should be obtained from the binder supplier.
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Penetration grade bitumen: An Ideal Bitumen for Road Construction
Penetration grade bitumen: An Ideal Bitumen for Road Construction - Highways Today
Railroad ballast structure layer may experience a decline in mechanical and geometrical performance due to heavy train and environmental loads. In order to improve the quality of ballast structure, the addition of asphalt to ballast layer can be considered as a solution. Compressive strength test was performed to analyze the weight of specimen, vertical deformation, and ballast material abrasion. The problems experienced by the Indonesian government in the development of rail transport among others are expensive infrastructure procurement and high maintenance costs, especially of ballast layer. According to Indraratna et al.
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Penetration grades are one of the most common types of bitumen for road construction. This type of bitumen is known for its durability and resistance to temperature changes; therefore, numerous oil refineries across the world have special plants for producing penetration grades. Each subgrade of penetration bitumen has a number that shows its level of stiffness. In refineries, bitumen is tested by penetration method in which the expert perforates a standard needle in the bitumen and measure the speed of penetration to indicate the stiffness. Accordingly, it is a perfect choice for road engineers in various regions, particularly Asia and South-East Africa.
Mixed Bitumen Warning. Iran PG Bitumen Supplier. Bitumen exploration in Ondo, Nigeria. Jey Oil Refining Company. Bitumen Delivery Terms.
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