Scholarlink

<p>The selection of subbase material is a strategic process that must balance performance, cost-efficiency, and resource availability. As natural aggregates become increasingly scarce in urban regions, alternative solutions are gaining importance. This study investigates the mechanical enhancement of Clayey Sand (SC) subbase soil through cement stabilization, integrating both laboratory and field evaluations. Initial characterization involved determining optimal water and cement contents using Modified Proctor and Unconfined Compressive Strength (UCS) tests. Subsequent laboratory testing included the California Bearing Ratio (CBR), followed by field assessments using Light Weight Deflectometer (LWD) and Plate Loading Test (PLT) methods. Microstructural changes in the stabilized soil were examined via scanning electron microscopy. Analytical techniques such as Response Surface Methodology (RSM) and Classification and Regression Trees (CART) were employed to interpret the experimental data and identify key influencing parameters. The results indicate that stabilizing SC subbase soil with 5% cement and an optimum water content of 11.8% significantly improves its mechanical performance. Key enhancements include a UCS of 2.842&#xa0;MPa, a CBR of 326% under 65 blows, an LWD elastic modulus of 180.4&#xa0;MPa, and a PLT elastic modulus of 277.74&#xa0;MPa. These findings underscore the suitability of cement-treated SC soil as a durable and effective pavement material for accommodating moderate to heavy traffic loads, particularly in the western and northwestern regions of Iran.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Laboratory and Field Study of Strength and Quality Control of Cement Stabilized Subbase

  • 期刊论文

  • 发表日期：

    2025年10月8日

查看全文
  • Milad Khaksar,
  • Alireza Khavandi,
  • Mohammad Mehdi Khabiri

摘要

The selection of subbase material is a strategic process that must balance performance, cost-efficiency, and resource availability. As natural aggregates become increasingly scarce in urban regions, alternative solutions are gaining importance. This study investigates the mechanical enhancement of Clayey Sand (SC) subbase soil through cement stabilization, integrating both laboratory and field evaluations. Initial characterization involved determining optimal water and cement contents using Modified Proctor and Unconfined Compressive Strength (UCS) tests. Subsequent laboratory testing included the California Bearing Ratio (CBR), followed by field assessments using Light Weight Deflectometer (LWD) and Plate Loading Test (PLT) methods. Microstructural changes in the stabilized soil were examined via scanning electron microscopy. Analytical techniques such as Response Surface Methodology (RSM) and Classification and Regression Trees (CART) were employed to interpret the experimental data and identify key influencing parameters. The results indicate that stabilizing SC subbase soil with 5% cement and an optimum water content of 11.8% significantly improves its mechanical performance. Key enhancements include a UCS of 2.842 MPa, a CBR of 326% under 65 blows, an LWD elastic modulus of 180.4 MPa, and a PLT elastic modulus of 277.74 MPa. These findings underscore the suitability of cement-treated SC soil as a durable and effective pavement material for accommodating moderate to heavy traffic loads, particularly in the western and northwestern regions of Iran.