Ring Ball Apparatus

The softness of bitumen depends, among other factors, on the temperature of the material; as the temperature rises, the bitumen becomes softer. The device consists of a Pyrex beaker, a brass frame, two tapered rings, two ball centering guides, and two balls.

EN 1427 ASTM D36 AASHTO T53 NF T66 008 BS 2000 UNI 4161 DIN 52011 UNE 7111

YKM-AS211