橡胶颗粒沥青混合料桥面铺装破冰效果室内试验研究

定义了橡胶颗粒沥青混合料室内破冰效果定量评价方法及指标Rc,并对不同面层厚度、橡胶颗粒掺量及冰层厚度条件下的结冰试件进行了室内破冰试验,定量分析各因素对破冰效果的影响,主要结论:面层厚度每增加1 cm,破冰率增加7%,橡胶颗粒掺量每增加1%,破冰率增加5%,冰层破碎效果随面层厚度及橡胶颗粒掺量增加呈线性增长;室内有效破冰厚度不大于5 mm,冰层持续增加,破冰效果急剧下降。

Laboratory Research on Ice-Breaking Effect of Rubber Particle Asphalt Mixture Bridge Deck Pavement

The article defines the laboratory ice-breaking effect quantitative evaluation method and index Rc of rubber particle asphalt mixture, and introduces the laboratory ice-breaking test of frozen tested examples under the conditions of the different pavement thicknesses, rubber particle contents and ice thicknesses so as to quantitatively analyze the influence of each factor on the ice-breaking effect. The main conclusion is that the ice-breaking rate increases 7% while the pavement thickness increases 1 cm each, and increases 5% while the rubber particle content increases 1% each. The ice-breaking effect presents the linear growth with the increase of pavement thickness and the rubber particle content; and the ice-breaking effect declines sharply while the indoor effective ice-breaking thickness is not larger than 5 mm and the ice thickness increases continuously.