掺橡胶颗粒半柔性路面材料路用性能研究

发布时间：2019-05-09 00:03

【摘要】：随着车流量和轴载的不断增加,传统的柔性路面沥青混凝土和刚性水泥混凝土路面暴露出的问题,已经满足不了发展需求。基于此半柔性路面诞生了,半柔性路面结构作为一种新型路面结构,它是基于大空隙沥青混凝土为母体(空隙率达到20%～25%),往里面灌入高流动度且强度达到规范要求的水泥砂浆复合形成的。半柔性路面具有高于水泥混凝土的柔性和沥青混凝土的刚性,吸收了两种传统路面的优点。橡胶颗粒作为一种高弹且对水和温度不敏感的材料,加入半柔性路面材料中不仅提高其路用性能又能保护环境。因此,对这种路面材料进行开发和应用研究具有非常大的现实意义和实用价值。本文是基于国内外研究基础上,通过室内试验对水泥砂浆的配合比进行各项性能测试研究,最终确定了满足相关规范要求的水泥砂浆配合比。以大空隙沥青混凝土 OGFC--13为母体,设计孔隙率为24%,采用外掺法把橡胶颗粒掺进去。然后灌浆、养护试件,对掺橡胶颗粒半柔性路面材料试件的高温稳定性、低温抗裂性、水稳性、保水量性等路用性能进行研究。通过室内各项试验结果表明:掺橡胶颗粒半柔性路面材料具有良好的应用前景与价值。
[Abstract]:With the increasing of traffic flow and axle load, the problems exposed by the traditional asphalt concrete and rigid cement concrete pavement can not meet the demand of development. Based on this semi-flexible pavement was born, semi-flexible pavement structure as a new type of pavement structure, it is based on large void asphalt concrete as the matrix (voidage of 20% / 25%), It is formed by filling the cement mortar with high mobility and strength to meet the requirements of the specification. Semi-flexible pavement has higher flexibility than cement concrete and rigidity of asphalt concrete, which absorbs the advantages of two kinds of traditional pavement. Rubber particles are highly elastic and insensitive to water and temperature. The addition of semi-flexible pavement materials can not only improve the road performance but also protect the environment. Therefore, the development and application of this kind of pavement material has great practical significance and practical value. Based on the research both at home and abroad, this paper tests and studies the properties of cement mortar through laboratory tests, and finally determines the mix ratio of cement mortar which meets the requirements of relevant specifications. Taking OGFC--13 as the matrix, the design porosity is 24%, and the rubber particles are added into the asphalt concrete by the external mixing method. Then grouting and maintenance tests are carried out to study the high temperature stability, low temperature crack resistance, water stability and water retention of semi-flexible pavement specimens mixed with rubber particles. The results of laboratory tests show that rubber particle semi-flexible pavement material has good application prospect and value.
【学位授予单位】：内蒙古农业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U414

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