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<p>A comprehensive understanding of the thermal-hydraulic-mechanical-chemical (THMC) behavior evolution in cement-stabilized marine clays with varying initial moisture contents is essential for effective engineering management. Column tests were performed to examine the influence of varying initial moisture contents (17%, 18.91%, 22%, and 25%) on the development of Unconfined Compressive Strength (UCS), California Bearing Ratio (CBR), and hydraulic conductivity in cement-stabilized clay. Additionally, the variations in internal temperature, volumetric water content (VWC), matric suction, and electrical conductivity (EC) were systematically monitored, and scanning electron microscopy (SEM) experiments were performed to examine the effects of initial moisture content on the microstructural evolution of cement-stabilized marine clays. The results showed that the optimum construction moisture content for cement-stabilized clay is 22%. At this moisture content, the cement-stabilized marine clay cured for 28 days achieved an UCS of up to 968.58&#xa0;kPa, a CBR of up to 143.96%, and a hydraulic conductivity reduced to 9.54&#xa0;cm·s⁻¹. Variations in moisture content directly affect VWC and matric suction (H) in cement-stabilized marine clays, while also modifying dissolved ion concentration, influencing electrical conductivity (C). Additionally, moisture content affects cement hydration rates, governing compressive strength (M), structural stability, and internal temperature (T) development. These results demonstrate the moisture content critically governs THMC behavior.</p>

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Initial moisture effects on THMC processes in cement-stabilized marine clay

  • 期刊论文

  • 发表日期：

    2025年10月14日

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  • Shaoping Huang,
  • Yunyi Xu,
  • Henglin Xiao,
  • Gaoliang Tao,
  • Weihao Liu,
  • Hao Wan,
  • Ding Zhou

摘要

A comprehensive understanding of the thermal-hydraulic-mechanical-chemical (THMC) behavior evolution in cement-stabilized marine clays with varying initial moisture contents is essential for effective engineering management. Column tests were performed to examine the influence of varying initial moisture contents (17%, 18.91%, 22%, and 25%) on the development of Unconfined Compressive Strength (UCS), California Bearing Ratio (CBR), and hydraulic conductivity in cement-stabilized clay. Additionally, the variations in internal temperature, volumetric water content (VWC), matric suction, and electrical conductivity (EC) were systematically monitored, and scanning electron microscopy (SEM) experiments were performed to examine the effects of initial moisture content on the microstructural evolution of cement-stabilized marine clays. The results showed that the optimum construction moisture content for cement-stabilized clay is 22%. At this moisture content, the cement-stabilized marine clay cured for 28 days achieved an UCS of up to 968.58 kPa, a CBR of up to 143.96%, and a hydraulic conductivity reduced to 9.54 cm·s⁻¹. Variations in moisture content directly affect VWC and matric suction (H) in cement-stabilized marine clays, while also modifying dissolved ion concentration, influencing electrical conductivity (C). Additionally, moisture content affects cement hydration rates, governing compressive strength (M), structural stability, and internal temperature (T) development. These results demonstrate the moisture content critically governs THMC behavior.