高模量沥青混合料试验研究与应用

Experimental Study and Application of High Modulus Asphalt Mixtures

摘要:

为探讨高模量沥青混合料的性能特点和路用性能表现，以实体项目为依托，对高模量沥青混合料BBME（Béton Bitumineux à Module élevé，BBME）、EME（Enrobé à Module élevé，EME）进行试验研究。马歇尔试验结果表明：高模量沥青混合料与传统改性沥青混合料相比，具有高油石比、低空隙率和高饱和度特点。通过水稳定性、高温稳定性和低温抗裂性能试验，检验了高模量沥青混合料能均衡高温和低温性能，综合性能远超过传统改性沥青混合料的性能。对现场施工路段进行质量检测，结果表明路面使用效果较好。应用成果证明高模量沥青混合料是一种高品质的筑路材料，适合于交通量较高的城市道路的沥青路面上、中、下面层，值得在该地区公路工程中广泛应用及进一步推广。

Abstract:

In order to explore the performance characteristics and pavement performance of high modulus asphalt mixtures, based on an actual project, the experiment research on high modulus asphalt mixtures BBME (Béton Bitumineux à Module élevé) and EME (Enrobé à Module élevé) was carried out. Through the Marshall test, the results show that high modulus asphalt mixtures have the characteristics of high asphalt-aggregate ratio, low void ratio and high saturation compared with the traditional modified asphalt mixtures. By testing the water stability, high-temperature stability and low-temperature crack resistance, it was tested that the high modulus asphalt mixture can achieve a balance between high-temperature and low-temperature performances, and the comprehensive performance far exceeds that of traditional modified asphalt mixtures. Quality inspections are carried out on the on-site construction road sections. The results show that the pavement usage effect is good. The successful application proves that high modulus asphalt mixture is a high-quality road construction material, and is suitable for the upper, middle and lower layers of asphalt pavements on urban roads with high traffic volumes, which is worth widely applying and further promoting in highway engineering in this region.