Study on the improvement effect of water-based polyurethane/cellulose acetate composite on silty clay for slope ecological restoration in seasonally frozen soil regions

2026-06-19

PRE

Xinhao Wu

Chenglong Yu *

Libo Liu

Huanan Liu

Jiquan Zhang

Yichen Zhang

Qinze Du

Haoxin Chen

DOI：10.1016/j.ecoleng.2026.108069

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• Novel WPU-CA composite for eco-engineering steep slopes in seasonally frozen regions. • Optimal ratio is 1:5 (WPU:CA) at 4% concentration. • Enhances soil shear strength, erosion resistance, and frost resistance. • Promotes plant growth at 3–4%, balancing reinforcement and ecology. • Stabilization mechanism: binding soil particles and filling pores (SEM).

Study on the improvement effect of water-based polyurethane/cellulose acetate composite on silty clay for slope ecological restoration in seasonally frozen soil regions

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