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近年来高速公路的数量日益增多,为了增加沥青混凝土路面的耐磨性,对中性和酸性的石料使用也大大增加。但在使用中性和酸性的石料时,其与沥青一样的基性使得与沥青的粘附性不够,容易造成沥青混凝土路面使用早期就出现剥落的现象。本试验通过在矿粉中加入石灰提高了矿粉的碱性,不仅能够增强沥青混合料的抗剥落性,还能获得好的社会经济效益。
In recent years, the number of expressways is increasing. In order to increase the wear resistance of asphalt pavement, the use of neutral and acidic stones is also greatly increased. However, when using neutral and acidic stone, its basicity with asphalt makes the adhesion with asphalt insufficient, which will easily cause the asphalt concrete pavement to peel off early. In this experiment, the alkaline of ore powder is increased by adding lime in the ore powder, which not only can improve the anti-spalling property of the asphalt mixture, but also obtain good social and economic benefits.