bitumen AC-30

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 unit of viscosity grading system is Poise. The viscosity grading can be done on both original (as-supplied) asphalt binder which is called AC grading and aged residue binder which is called AR grading. The AC grading is related to absolute viscosity at 60 c in 100 poises.
Here are six asphalt cement (AC) viscosity grades: AC-2.5 (which is the softest grade), AC-5, AC-20, AC-30, and AC-40(which is the hardest grade). As a brief explanation, AC-2.5 is asphalt cement with a target viscosity of 250 poises at 60c. (250 are divided by 100).

applications

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 in the manufacture of hot mix asphalt for bases and wearing courses, and possesses characteristics and qualities unique sand quite different from other agents. They achieve very flexible and tenacious connections with other materials due mainly to viscoelastic response of bitumen, which behavior depends on how fast charges are applied.
INTERNATIONAL BITUMEN SUPPLY guarantee to supply the viscosity grade AC-30 in compliance to
the mentioned specification in table.

Specification