This study has been undertaken to investigate the benefit of using a sustainable water-soluble anionic polyacrylamide on different properties of pavement surface materials for low-volume roads. This study is centered on the engineering and physical properties performance at specimen and particle levels of three types of soils ranged from non-cohesive to medium and very cohesive soils. At specimen level, the mechanism of the polymeric additive stabilisation was investigated using the potential improvements of density, compressive strength, toughness and wearing resistance characteristics. However, at particle level, the stabilisation mechanism was inspected using scanning electron microscope and X-ray diffraction tests. The results show that polyacrylamide was the main agent to enhance the physical and engineering properties of the soils tested. On the other hand, the results from the analysis at particle level show that the anionic polyacrylamide mainly interacts with soil particles by means of physical bonding rather than chemical interaction.

本研究旨在调查使用可持续的水溶性阴离子聚丙烯酰胺对低容量道路路面材料的不同特性的益处。本研究集中于从非粘性土到中等粘性土和非常粘性土的三种土壤的试样和颗粒水平的工程和物理特性性能。在样品水平上，使用密度、抗压强度、韧性和耐磨特性的潜在改进来研究聚合物添加剂稳定的机制。然而，在颗粒水平上，稳定机制是使用扫描电子显微镜和 X 射线衍射测试来检查的。结果表明，聚丙烯酰胺是增强被测土壤物理和工程特性的主要试剂。