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我国经济的飞速发展,道路交通起了关键的作用。普通沥青砼存在低温易开裂、高温易软化的弊端,使道路在自然因素等作用下产生老化等现象,严重影响了道路的使用寿命。只需在沥青混合料中加入0.0.5%~3%的新研制的HD系列抗车辙添加剂,就能明显提高沥青混合料的抗高温稳定性,同时还可改善其抗水损坏和抗低温开裂性能等。介绍了D-Ⅱ改性剂的性能、改性原理和在路面工程中应用。同时通过工程实例,阐述了改性沥青的施工要求、施工注意事项、机器投料以及保管要求。通过对D-Ⅱ改性沥青的描述,为其在调整公路中的应用提供了良好的借鉴。
China’s rapid economic development, road traffic played a key role. Ordinary asphalt concrete has the defects of low temperature easy to crack and high temperature easy to soften, causing the road to age under the action of natural factors and the like, which seriously affects the service life of the road. Simply add 0.0.5% ~ 3% newly developed HD series of anti-rutting additives to the asphalt mixture can significantly improve the high temperature stability of asphalt mixture, but also can improve its resistance to water damage and resistance to low temperature cracking Performance and so on. The properties of D-Ⅱ modifier, modification principle and application in pavement engineering are introduced. At the same time, through the engineering examples, the construction requirements of modified asphalt, construction precautions, machine feeding and storage requirements are expounded. Through the description of D-Ⅱ modified asphalt, it provides a good reference for its application in adjusting the highway.