BITUMEN BLASTING PROCESS AND APPARATUS THEREFOR

摘要

Soft asphalt is hardened by passing a stream of air into and through the asphalt in a molten state. The air stream forms air bubbles which rise through the asphalt. The air bubbles are forcibly coalesced into air sacs and the air sacs are redispersed into air bubbles. The air bubbles may be coalesced into air sacs and redispersed more than once.