印度尼西亚布敦岩改性沥青（BRA）在宣大高速公路表面层的应用

Application of BRA in Xuanda Expressway Road Surface

本文介绍了印尼布敦岩天然沥青改性沥青的性能、作用，根据具体工程实例介绍了该改性沥青在沥青混凝土表面层的施工工艺，得出了添加该沥青改性剂能有效改善沥青混凝土的抗车辙能力、提高沥青混凝土的高温稳定性、低温抗裂性能、延长沥青路面使用寿命的结论。

The property and function of BRA are introduced. The construction technique of BRA used in road surface of asphalt concrete. Practice shows that the adding of BRA can enhance the ability of anti-the track of a wheel, the stability of high temperature, the ability of anti-crack and prolong the life of the road.