How many yards in a ton of Gravel, Sand, Cement, Rock, Asphalt, .
Crushed asphalt has a density of 45 lb/ft3, which equates to kg/m3 in SI measurements. As a result, 1 yard of asphalt is equivalent to tons. So, one tonne of gravel contains cubic metres of gravel. 2. Liquid asphalt The density of liquid asphalt is 65 lb/ft3 which equates to kg/m3 in SI measurements.