Deicing chemicals, when applied to pavement surfaces, occasionally deposited on the ground beyond the road pavement, thus lead to their accumulation in roadside soils and producing secondary salinisation of the ground water. In order to explore moisture and chemical mass transfer in highway subsoils during the winter period, 9 non-saline soil samples of 1 m length were subject to simultaneously freeze–thaw cycles with freezing rate 2 °C/day. To monitor the dependence of mass transfer from the soil density, each further column was packed with increased dry density than the previous one and supplied with 22 g/L of NaCl solution from the base.

The results show that soil columns with loose density were consolidated throughout the sample length with the maximum in its lower part. Whilst in the dense soil samples, only the top 10 cm was loosened and attracted a large amount of water to form ice lenses. Chemical mass transfer to the freezing front was observed along the entire length of the samples regardless of density and void ratio. The concentration of de-icing chemicals in the pore water exceeded the supplied solution by 2–2.5 times at the capillary raise zone. In this study, chemical mass transfer is considered in terms of the driving forces and the system equilibrium. The driving force was explained as a cryosuction force, effected to the hygroscopic water in a liquid state with dissolved de-icing chemical ions in it, which migrated towards the freezing front. The continuous secondary salinisation, lasting in the highway subsoils for years, requires an accurate protection as the use of plastic membrane or silicone gel insulation.

除冰剂应用于路面时，偶尔会沉积在路面之外的地面上，因此会导致其在路旁土壤中积聚，并导致地下水的二次盐化。为了研究冬季高速公路地下土壤中的水分和化学物质传递，对9个长度为1 m的非盐渍土样品同时进行了2°C /天的冻融循环。为了监测传质与土壤密度之间的关系，每根色谱柱的干密度均比前一根柱高，并从底部加入22 g / L NaCl溶液。

结果表明，松散密度的土柱在整个样品长度内都得到了固结，下部最大。在稠密的土壤样品中，只有最上面的10厘米松动，并吸引了大量的水形成冰晶。沿样品的整个长度观察到化学质量转移到冰冻前沿，而与密度和空隙率无关。在毛细上升区，孔隙水中除冰剂的浓度比所提供的溶液高出2–2.5倍。在这项研究中，根据驱动力和系统平衡来考虑化学传质。该驱动力被解释为冷冻力，该冷冻力作用于液态的吸湿性水中，其中溶解有除冰化学离子，该吸湿性水向冷冻前沿迁移。