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目前鉴定沥青材料质量的最普通方法,是用各种仪器(针入度仪、软化点仪、标准粘度计等)来测定沥青材料的条件粘度;鉴定地沥青混合料质量的最普通方法,是在不同温度(22℃、50℃)下,测定混合料试件的极限抗压强度。这些试验方法由于与实际使用情况脱节,所得数据,不能完全准确地说明材料在使用过程中的物理状态或力学性质。例如沥青材料的测定法,局限于一种正温度,不能判断路面在天然条件下全部温度范围内(通常为—40°～+60℃)沥青材料粘度变化的大小和性质;地沥青混合料的测定法,在刚性压模下所进行柔性路面材料的静力试验,不能完善地反映汽车行驶时的受力情况,因此,这些方法有商讨和改进的必要。
The most common way of identifying the quality of bituminous materials currently is to determine the conditional viscosity of the bituminous material using various instruments (pin gauges, softening point gauges, standard viscometers, etc.); the most common method of identifying the quality of bituminous mixtures is At different temperatures (22 ℃, 50 ℃), determine the ultimate compressive strength of the specimen mixture. Due to the fact that these test methods are out of step with the actual situation, the data obtained can not fully explain the physical state or mechanical properties of the material during its use. For example, the determination of asphalt material, limited to a positive temperature, can not determine the natural conditions in the road surface temperature range (usually -40 ° ~ +60 ℃) the size and nature of the viscosity changes of asphalt material; asphalt mixture Determination method, the static test of flexible pavement materials under rigid stamper, can not fully reflect the force situation when the car is running, therefore, these methods are necessary to discuss and improve.