Asphalt paving mix formed of recycled asphalt concrete for paving at ambient temperatures and a process for making the same

摘要

An improved asphalt mix and a process for making the same are disclosed. The asphalt mix includes aggregate grains and additive oil. The aggregate grains are obtained from crushing recycled asphalt concrete at an ambient temperature to such an extent that each aggregate grain will retain asphalt on its surface. The additive oil is preferably hydrocarbon oil having a low vapor pressure so as to be practically nonvolatile at ambient temperatures. The additive oil also has mutual solubility with asphalt at ambient temperatures. When the aggregate grains and the additive oil are mixed together at an ambient temperature, the asphalt on the surfaces of aggregate grains swells by absorbing the oil, so that the asphalt on the grains will amalgamate together when compacted at ambient temperatures to form a pavement. The asphalt concrete formed of the asphalt mix achieves sufficient strength immediately after compaction at an ambient temperature. The asphalt mix does not congeal easily and, thus, is suited for long-term storage.