含除冰剂的沥青性能研究

Study on Performance of Asphalt Containing Deicer Agent

在沥青路面中添加炭黑以及自主研制的除冰剂可以减少沥青路面由于冻胀或温度应力产生的裂缝造成的路面磨损,对改性沥青性能进行针入度、软化点、延度和马歇尔试验等评定。结果表明,随着炭黑含量的增加,沥青的针入度和延度呈减小趋势,软化点稍有降低;当炭黑的含量为10%时,沥青的改性效果最好。当制备的除冰剂和炭黑复合加入到沥青中,沥青芯样有一定的防腐和防冻性能;改性后的沥青混合料稳定度和流值都增加,增加了沥青路面的耐磨性能。

In order to reduce the pavement wear caused by cracks which were made by frost heave or temperature stress,the carbon black had been added to the asphalt roadbed with the as-prepared deicer agent,and the properties of the modified asphalt were evaluated through penetration,softening point,ductility and Marshall tests.The results showed that with the increase of the content of carbon black,the penetration and ductility of the asphalt decreased,and the softening point decreased slightly.When the content of rubber powder and carbon black was 10%,the modified effect of asphalt was the best.When the as-prepared deicer agent and rubber powder(carbon black)were added into the asphalt,the asphalt had some antiseptic and anti-freezing properties,and the stability and flow value of the modified asphalt mixture increased with increased wear resistance of the asphalt pavement.