Standard Practice for Evaluating the Effects of Heat on Asphalts

Importancia y uso:

5.1 When asphalts are maintained at elevated temperatures in the presence of air, their characteristics may change. Certain blown asphalts also soften when maintained near, and particularly above, their final blowing temperatures under virtually air-free conditions. This may happen if the asphalt is overheated for application purposes. This practice provides a uniform heat-treatment procedure and methods for evaluating the effect of this treatment on some of the characteristics of asphalts. Changes observed when asphalts are overheated are not indicative of changes to be expected when asphalts are heated to normal application temperatures.

Subcomité:

D08.03

Volúmen:

04.04

Número ICS:

91.100.50 (Binders. Sealing materials)

Palabras clave:

asphalts; heat exposure; overheated; physical property changes;