Normative documents in many countries that regulate the construction of highways and railways subgrade, in order to reduce the costs, allow the use of soils from nearby excavations and quarries. Large length of roads leads to noticeable variations in the properties of soils along the construction line, which is reflected in design decisions. For example, the results of laboratory studies performed in this work demonstrate a scatter in the optimum moisture content of cohesive soils up to 40 %, and a spread in the soil densities after compaction, up to 20 %. In such conditions, the task of achieving the required quality of construction is partially transferred to the input control of materials, allowing determining its compliance with the requirements of the project. Since the use of input control technologies can increase the construction time, they must rapid. In this study, to accelerate the routines for comparing soil properties, a method for determining the mineral composition based on the use of infrared spectroscopy technologies is developed. The use of this method allows determining the mineral composition of soil building materials by the IR spectroscopy with an accuracy of 10–15 %.

为了降低成本，许多国家规范公路和铁路路基建设的规范性文件允许使用附近挖掘和采石场的土壤。较长的道路会导致沿施工线的土壤特性发生明显变化，这在设计决策中得到了体现。例如，这项工作进行的实验室研究结果表明，粘性土壤的最佳水分含量最高可达40％，压实后土壤密度的分布最高可达20％。在这种情况下，实现所需建筑质量的任务会部分转移到材料的输入控制中，从而确定其是否符合项目要求。由于使用输入控制技术会增加施工时间，他们必须迅速。在这项研究中，为了加快比较土壤特性的程序，开发了一种基于红外光谱技术确定矿物成分的方法。使用此方法可以通过红外光谱法测定土壤建筑材料的矿物成分，准确度为10％至15％。