What is the typical thermal BTU value for a pound of asphalt?

BTU varies by temperature and per cent mineral matter in the asphalt. A range is usually quoted, but we have used approximately 158,500 BTU/gal. This value is an average for an AC-10 grade. Most refineries will have a calorimeter somewhere in the lab that is used to run this test. Each company should run its own test on the specific product that is being used.