自主研发了一套室内沥青水发泡设备,研究发现:随着发泡用水量的提高,发泡沥青膨胀倍率增加,半衰期降低,最适宜的发泡用水量为1.5%;发泡后70号普通基质沥青和SBS改性沥青的针入度均有所增加,软化点降低,布氏旋转黏度值下降;用DSR评价沥青流变性能得出沥青发泡后黏性部分和弹性部分均有所降低;发泡沥青混合料的拌和和成型温度实现降温15℃左右,混和料空隙率和热拌沥青混合料相当。 Independent research and development of a set of indoor asphalt water foaming equipment, the study found that: with the foam water increased, the expansion of foamed bitumen increases, the half-life decreases, the most appropriate foaming water consumption of 1.5%; foaming 70 The penetration of common matrix asphalt and SBS modified asphalt increased, the softening point decreased, and the Brookfield rotational viscosity decreased. By using DSR to evaluate the rheological properties of asphalt, the viscous and elastic parts of asphalt were found Reduce; mixing and molding of foamed asphalt mixture to achieve cooling temperature of about 15 ℃, the mixed material porosity and hot mix asphalt mixture.