聚氨酯空隙弹性路面混合料的性能研究

发布时间：2018-03-24 04:16

本文选题：聚氨酯胶黏剂　切入点：空隙弹性　出处：《东南大学》2016年硕士论文

【摘要】：道路交通噪声污染正日益成为危害道路沿线居民和驾乘人员身心健康的重要因素。当车辆行驶速度在30km/h以上时,轮胎/路面噪声成为交通噪声的主要来源之一。欧美和日本等国家经过多年研究发现,空隙弹性路面(PERS)是当前降低轮胎/路面噪声最有效的低噪声路面。本文通过室内试验对PERS的混合料配合比设计、路用性能、抗滑性能、界面行为等进行研究,为我国PERS的研究提供参考。首先,根据道路工程特点明确聚氨酯胶黏剂应具备的特性,使用单组分湿固化聚醚型聚氨酯胶黏剂作为PERS混合料的胶结料。接着,确定了PERS混合料配合比设计的三个关键影响因素：聚氨酯膜厚度、空隙率、橡胶颗粒体积用量。参照OGFC矿料级配确定了PERS混合料的级配；同时,论证了OGFC混合料沥青膜厚度计算方法适用于聚氨酯膜厚度的计算。其次,研究了PERS混合料的减振性能、抗车辙性能、水稳定性与抗剥落性能、低温弯曲性能。试验结果表明：PERS有良好的抗车辙性能；橡胶颗粒越多,PERS混合料的动态模量越小、相位角越大,减振性能越突出；聚氨酯膜厚度增大,水稳定性与抗剥落性能提高,抗弯拉强度增大；空隙率越大,水稳定性与抗剥落性能越差,抗弯拉强度越小；橡胶颗粒用量增加,水稳定性变差、抗剥落性能提高、抗弯拉强度下降。最后,论文对PERS的抗滑性能和界面行为进行了研究,并利用有限元计算了车载作用下PERS路面的层间剪力。试验结果表明,金刚砂撒布量为4g/300cm2以上时,可显著提高PERS的抗滑性能。未做处理的层间斜剪试验得出,PERS混合料聚氨酯膜厚度的增加,层间抗剪强度增大；PERS混合料与沥青路面的粘结强度低于与水泥路面的粘结强度。层间处理的斜剪试验结果表明,环氧沥青、聚氨酯胶黏剂、聚氨酯细砂层作为粘结层均可提高界面抗剪强度。
[Abstract]:Road traffic noise pollution is increasingly becoming an important factor that endangers the physical and mental health of residents and drivers along the road. Tire / road noise has become one of the main sources of traffic noise. Porous elastic pavement (pers) is the most effective low noise pavement for reducing tire / road noise. The mixture mix design, road performance, skid resistance and interface behavior of PERS are studied in this paper. First of all, according to the characteristics of road engineering, the polyurethane adhesive is used as the binder of PERS mixture, and the one-component wet curing polyether polyurethane adhesive is used as the binder of PERS mixture. Three key factors affecting the mix ratio design of PERS mixture are determined: polyurethane film thickness, void ratio, rubber particle volume dosage. The gradation of PERS mixture is determined by referring to the OGFC mineral aggregate gradation, at the same time, It is proved that the calculation method of asphalt film thickness of OGFC mixture is suitable for the calculation of polyurethane film thickness. Secondly, the damping performance, rutting resistance, water stability and peeling resistance of PERS mixture are studied. Low temperature bending properties. The test results show that the weight pers has good rutting resistance, the smaller the dynamic modulus of the rubber particles is, the larger the phase angle is, the more outstanding the damping performance is, and the thicker the polyurethane film is, The higher the void ratio, the worse the water stability and peeling resistance, the smaller the flexural tensile strength, the worse the water stability and spalling resistance, the worse the water stability, the higher the spalling resistance, the higher the water stability, the higher the spalling resistance. Finally, the anti-slip performance and interface behavior of PERS are studied, and the interlayer shear force of PERS pavement under the action of vehicle is calculated by finite element method. The experimental results show that when the amount of carborundum is over 4g/300cm2, The slip resistance of PERS can be improved significantly. The thickness of polyurethane film of pers mixture is increased by untreated interlaminar oblique shear test. The bond strength of pers mixture with asphalt pavement is lower than that of cement pavement. The results of slanting shear test show that epoxy asphalt, polyurethane adhesive, epoxy asphalt, polyurethane adhesive, The interfacial shear strength can be improved by using polyurethane fine sand layer as bond layer.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U414

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