Basic physical properties of sandy soil.

The susceptibility of sandy soil slopes to erosion, particularly during rainfall events, poses significant challenges for soil conservation and ecological slope protection. This study explores the potential of nano-polymeric curing agents (NPCA) as a sustainable solution to enhance water stability and slope integrity. Reinforcement depth experiments were conducted to determine the optimal application depth of NPCA, while permeability and erosion tests assessed its impact on water retention and soil stability. Advanced analytical techniques, including scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FTIR), were employed to examine the interactions between NPCA and soil particles. Results show that a 3% NPCA content (mass ratio) achieves the maximum reinforcement depth of 23 mm. Within the optimal reinforcement range (mass ratio

沙质土质边坡的侵蚀敏感性，尤其在降雨工况下，给水土保持与生态护坡工作带来了显著挑战。本研究探讨了纳米聚合固化剂（nano-polymeric curing agents, NPCA）作为可持续解决方案，以提升土体水稳性与边坡整体性的潜力。为确定NPCA的最优施用深度，本研究开展了加固深度试验；同时通过渗透性试验与侵蚀试验，评估其对土体保水性与稳定性的影响。本研究采用扫描电子显微镜（scanning electron microscopy, SEM）与傅里叶变换红外光谱（Fourier-transform infrared spectroscopy, FTIR）等先进分析技术，探究NPCA与土壤颗粒之间的相互作用机制。研究结果表明，当NPCA掺量为3%（质量比）时，可实现最大加固深度23 mm。在最优加固范围内（质量比