玄武岩纤维沥青混合料水损伤衰变规律分析

为分析高温—水浴耦合作用下,玄武岩纤维对沥青混合料抗车辙形变能力和抗水损伤衰变性能的影响。采用PMW汉堡车辙试验,改变水浴温度和车轮行驶速度等试验条件对掺加和不掺玄武岩纤维的沥青混合料板块试件在浸水环境下的水稳定性和抗车辙性能进行评价。试验结果表明,玄武岩纤维可以提高沥青混合料在高温—水浴耦合作用下的水稳定性能和抗车辙性能。通过灵敏度分析得到随着水浴温度的波动,玄武岩纤维沥青混合料的抗车辙变形能力衰减最大。

Analysis The Decay Principle During Water Damage Process of Basalt Fibre Asphalt Mixture

In order to analyse the influence of the basalt fibre on the anti-rutting deformation resistance and water damage resistance of the asphalt mixture under the coupling of the high temperature-water bath,this thesis adopts PMW Hamburg Wheel-track Device Test,changing test conditions such as water bath temperature and wheel speed to evaluate the water stability and anti-rutting performance of asphalt mixture plates test pieces under water immersion.It is worth noting that the asphalt mixture have two types,one is with basalt fibre and the other is without.The results show that basalt fibre can improve the water stability and rutting resistance of asphalt mixture under the coupling of the high temperature-water bath.The conclusion which obtained by sensitivity analysis is that as the water bath temperature fluctuates,the basalt fibre asphalt mixture has the greatest resistance to rutting deformation.