改性沥青相容性的要点分析

Points analysis of modified asphalt compatibility

近年来,我国高等高速公路普遍呈现出交通密度大、车辆载荷重以及车辆荷载间歇性时间短等多种特点,这些特点的出现导致沥青路面在高温的影响下出现了严重的车辙,由于长时间的路面压力导致沥青的抗压能力逐渐降低,防滑性能也不断减弱,在低温情况下沥青容易产生裂痕,最终使得沥青路面的寿命减少。为了延长沥青路面的使用年限,必须提升沥青的流变性质使其能够适应现代化交通工具的要求。因此,需要对沥青进行改性,不仅能够改善沥青混合料在高温情况下的使用性能,同时能增强抗车辙以及抗老化的能力。本文就改性沥青相容性的主要问题和重点内容进行分析。

In recent years,China＇s higher traffic density highways are showing a big,heavy vehicle load and vehicle load intermittent short time, and other characteristics,the emergence of these features lead to a serious asphalt pavement rutting under the influence of high temperature,due to the asphalt road leading to prolonged pressure of compression capacity decreased,slip resistance has also been reduced, at low temperatures asphalt prone to cracks, ultimately makes the life of the asphalt pavement is reduced.In order to extend the life of asphalt pavement,asphalt rheological properties must be raised to enable them to adapt to modern transport requirements.Therefore, the need for bitumen modification,not only to improve asphalt at high temperatures using performance,and can enhance the anti-rutting and anti-aging ability.In this paper, an analysis of the main problems of compatibility and modified asphalt highlights.