Composition for bituminous paving and bituminous paving procedure

摘要

A process for preparing a composition for bituminous paving comprising the steps of a) injecting an aqueous solution comprising water and a lubricating substance in a heated asphalt binder at a temperature of 82-171 ° C (180-340 ° F), for provide a heated foamed asphalt binder; b) mixing the heated, foamed asphalt binder with the heated aggregate, to coat the aggregate and form a warm-mix paving composition containing asphalt binder, lubricant and aggregate, where the lubricating substance is a soap or a cationic surfactant , anionic or non-ionic; the composition for paving the warm mixture comprises 91-97% by weight of aggregate and 3-9% by weight of asphalt binder; and the amount of lubricating substance is 0.01-3% by weight with respect to the weight of asphalt binder.