Scholarlink

<p>The study utilized two cementitious materials (CM) to modify the engineering properties of expansive soil (ES) for reducing swelling and shrinkage phenomena. A series of tests were conducted using CM in 25 different proportions with replacement levels of ES reaching up to 16%. This research mainly focuses on strength characteristics of ES proven by microstructural analysis (MA). Main evaluated parameters included unconfined compressive strength (UCS), California bearing ratio (CBR) and expansion ratio (ER). In case of MA, techniques such as field emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS), X-ray fluorescence (XRF) and X-ray diffraction (XRD) were used. The UCS and CBR with ER test were conducted after 0, 4, 7, 14, 28, 56, 90, 180, 365 and 0, 7, 14, 28&#xa0;days of curing, respectively. The UCS and CBR values were increased by 14.34 and 68.98 times respectively with increasing the percentage of CM. Swelling of ES was decreased by 92.69% with increasing the percentages of CM by using ER. The creation of impermeable CSH and CAH gels is revealed by FESEM. EDS and XRF were used to determine elemental compositions. Pozzolanic reactions in soil treated with CM are the primary cause of increase in UCS and CBR values. This study focuses on improving highway subgrade performance by using CM to stabilize ES for flexible pavement applications.</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

Stabilizing Expansive Soil using Cementitious Materials

  • 期刊论文

  • 发表日期：

    2026年4月9日

查看全文
  • Dharmendra Singh,
  • Vijay Kumar,
  • Ayush Mittal

摘要

The study utilized two cementitious materials (CM) to modify the engineering properties of expansive soil (ES) for reducing swelling and shrinkage phenomena. A series of tests were conducted using CM in 25 different proportions with replacement levels of ES reaching up to 16%. This research mainly focuses on strength characteristics of ES proven by microstructural analysis (MA). Main evaluated parameters included unconfined compressive strength (UCS), California bearing ratio (CBR) and expansion ratio (ER). In case of MA, techniques such as field emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS), X-ray fluorescence (XRF) and X-ray diffraction (XRD) were used. The UCS and CBR with ER test were conducted after 0, 4, 7, 14, 28, 56, 90, 180, 365 and 0, 7, 14, 28 days of curing, respectively. The UCS and CBR values were increased by 14.34 and 68.98 times respectively with increasing the percentage of CM. Swelling of ES was decreased by 92.69% with increasing the percentages of CM by using ER. The creation of impermeable CSH and CAH gels is revealed by FESEM. EDS and XRF were used to determine elemental compositions. Pozzolanic reactions in soil treated with CM are the primary cause of increase in UCS and CBR values. This study focuses on improving highway subgrade performance by using CM to stabilize ES for flexible pavement applications.