Abstract: An improved asphalt mix and a process for making the same are proposed. The asphalt mix includes new aggregate and new asphalt, which are mixed together at a high temperature so that the asphalt covers the surfaces of the new aggregate. The mix further includes recycled aggregate obtained from crushing recycled asphalt concrete at an ambient temperature to such an extent that each aggregate grain will retain some asphalt on its surface. The recycled aggregate at an ambient temperature is mixed with the new aggregate covered with the new asphalt to form an asphalt composition, and to lower the overall asphalt composition temperature to, at the maximum, approximately 100° C. To the asphalt composition thus formed, additive oil is mixed to complete the asphalt mix. The additive oil has a low vapor pressure so as to be practically nonvolatile and has mutual solubility with asphalt.

Abstract: 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.

Abstract: An improved asphalt mix and a process for making the same are disclosed. The asphalt mix includes aggregate grains, new asphalt, 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 recycled asphalt on its surface. The new asphalt is heated and is mixed with the additive oil. The additive oil is preferably hydrocarbon oil having a low vapor pressure so as to be practically nonvolatile. The additive oil also has mutual solubility with asphalt. The mixture of the new asphalt and the oil is then mixed with the aggregate grains at an ambient temperature so that the mixture will cover the surfaces of the aggregate grains, and the recycled asphalt on the surfaces of aggregate grains will swell by absorbing the oil. The recycled asphalt on the grains is sufficiently swollen so as to amalgamate together when the asphalt mix is compacted at ambient temperatures to form a pavement.