Solidification/Stabilization of Chromium-Contaminated Soils by Polyurethane during Freeze–Thaw Cycles: Mechanical, Leaching and Microstructure Characterization

• Published in: Materials Vol. 17; no. 6; p. 1347
• Main Authors: Ma, Qiang, Zheng, Pangkun, Chen, Junjie, Lu, Xuesong
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 15.03.2024; MDPI
• Subjects: Abrasion resistance; Cement; Chromium; Complexation; Coordination; Curing; Environmental protection; Feasibility studies; Fourier transforms; Freeze thaw cycles; Freeze-thaw durability; Frozen ground; Functional groups; Heavy metals; Hydration; Ice crystals; In situ leaching; Isocyanates; Leaching; Leather industry; Mechanical properties; NMR; Nuclear magnetic resonance; Pollution; Polyurethane resins; Polyurethanes; Soil contamination; Soil mechanics; Soils; Solidification; Spectrum analysis; Temperature; Toxicity; China; Japan; solidification/stabilization; soil porosity; toxicity leaching ability; freeze–thaw cycle; hexavalent chromium-contaminated soil; FTIR spectroscopy

The treatment of chromium-contaminated soil in seasonal frozen soil areas has been the subject of recent interest. Polyurethane (PU), as a polymer material with excellent freeze–thaw resistance and abrasion resistance, has the potential to solidify Chromium-Contaminated soil in seasonal frozen soil...