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<p>Chemically aggressive environments initiated by industrial spills and leaks can lead to extensive soil heave and deformation, posing serious threats to infrastructure stability. Though several studies have examined acid or alkali-induced swelling, an integrated micromechanistic understanding and comprehensive mitigation framework remain scarce. This study synthesizes findings on chemical heaving in soils of varied mineralogy and highlights the efforts towards sustainable remediation approaches. Acid contamination was shown to dissolve carbonates and generate expansive secondary minerals, while alkali contamination-initiated dissolution-reprecipitation cycles with swelling severity being determined by mineral composition, concentration of contaminants and duration of exposure. Remediation trials revealed that fly ash and ground granulated blast furnace slag (GGBS) perform effectively in alkali environments, while nano calcium silicates synthesized from granite and marble waste showed superior performance against both acidic and alkaline conditions. Thus, valorized industrial waste offers an alternative, sustainable pathway towards long-term remediation of chemically induced heaving.</p>

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Chemical Induced Heaving of Soils: Mechanisms and Remediation Using Industrial by-products

  • 期刊论文

  • 发表日期：

    2026年1月8日

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  • P. Hari Prasada Reddy,
  • Rama Vara Prasad Chavali,
  • Sai Kumar Vindula,
  • T. Aravind Kumar

摘要

Chemically aggressive environments initiated by industrial spills and leaks can lead to extensive soil heave and deformation, posing serious threats to infrastructure stability. Though several studies have examined acid or alkali-induced swelling, an integrated micromechanistic understanding and comprehensive mitigation framework remain scarce. This study synthesizes findings on chemical heaving in soils of varied mineralogy and highlights the efforts towards sustainable remediation approaches. Acid contamination was shown to dissolve carbonates and generate expansive secondary minerals, while alkali contamination-initiated dissolution-reprecipitation cycles with swelling severity being determined by mineral composition, concentration of contaminants and duration of exposure. Remediation trials revealed that fly ash and ground granulated blast furnace slag (GGBS) perform effectively in alkali environments, while nano calcium silicates synthesized from granite and marble waste showed superior performance against both acidic and alkaline conditions. Thus, valorized industrial waste offers an alternative, sustainable pathway towards long-term remediation of chemically induced heaving.