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本文是在青藏公路试验路面和实验室室內路面材料试验的基础上对路面材料的热学特性作了一些研究和讨论。对包括沥青、无规聚丙烯及其混合物、石灰土、水泥土和水泥混凝土等12种材料,做了一系列的试验并测定了这些路面材料的主要热学特性指标,以便能在多年冻土地区中应用。试验后对其结果进行了详细比较,并论述了影响材料热学指标的几个主要影响因素。以便找出一些能用于多年冻土地区的,并具有较低导热性能的合用材料。
This paper made some research and discussion on the thermal properties of pavement materials on the basis of the test of the pavement materials in Qinghai-Tibet Highway and the laboratory. A series of tests were conducted on 12 materials including bitumen, atactic polypropylene and blends thereof, limestone, cement and cement concrete, and the main thermal characteristics of these pavement materials were measured so that they could be applied in permafrost areas In the application. After the test, the results were compared in detail, and discussed several main influencing factors of material thermal indicators. In order to find some of the materials that can be used in permafrost and have lower thermal conductivity.