AASHTO T 48-18 PDF Download

AASHTO T 48-18 is a standard method of testing the flash point of asphalt binder using the Cleveland open cup apparatus. The flash point of a material is the lowest temperature at which it releases sufficient vapor to form an ignitable mixture with the air. The flash point test is important in determining the safety of handling and transporting asphalt binders.

The Cleveland open cup apparatus is used in this standard method for its simplicity and accuracy. The apparatus consists of a metal cup filled with the asphalt binder, which is heated at a controlled rate. A small flame is then passed over the surface of the binder, and the temperature at which a flash of flame occurs is recorded as the flash point.

The procedure outlined in AASHTO T 48-18 provides specific guidelines on the equipment setup, heating rate, and testing conditions to ensure consistent and reliable results. It also includes provisions for multiple determinations to establish the flash point with greater accuracy.