Scholarlink

<p>The efficiency of transportation networks is significantly influenced by the condition of both the surface and subsurface layers of pavements. This study investigates how subsurface issues, such as inadequate compaction, drainpipe leakages, and the migration of soil fines during dewatering, contribute to surface defects like potholes and sinkholes, ultimately impacting traffic operational performance. In urban areas, frequent road relaying and underground utility installations often overlook subsurface integrity, leading to unnoticed cavity formations. Experimental studies were conducted to simulate cavity propagation in both flexible and rigid pavements due to water infiltration. The results highlight that flexible pavements exhibit surface potholes due to swelling, whereas rigid pavements may develop hidden voids without early surface symptoms. Laboratory tests revealed that soil density significantly affects the loss of fines and resulting settlement, with better compaction reducing both. A field study assessed pavement deterioration using the pavement condition index (PCI), showing a marked decline in PCI over time when subsurface defects remained untreated. Geophysical methods such as ground penetrating radar (GPR) and multichannel analysis of surface waves (MASW) effectively identified weak zones before major damage occurred. The study emphasizes the critical need for comprehensive subsurface assessment and timely intervention to ensure sustainable pavement performance and traffic safety in urban infrastructure.</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

Role of subsurface in pavement condition and traffic operational efficiency

  • 期刊论文

  • 发表日期：

    2026年8月3日

查看全文
  • P Anbazhagan,
  • K Panjami,
  • N Chandan Gowda

摘要

The efficiency of transportation networks is significantly influenced by the condition of both the surface and subsurface layers of pavements. This study investigates how subsurface issues, such as inadequate compaction, drainpipe leakages, and the migration of soil fines during dewatering, contribute to surface defects like potholes and sinkholes, ultimately impacting traffic operational performance. In urban areas, frequent road relaying and underground utility installations often overlook subsurface integrity, leading to unnoticed cavity formations. Experimental studies were conducted to simulate cavity propagation in both flexible and rigid pavements due to water infiltration. The results highlight that flexible pavements exhibit surface potholes due to swelling, whereas rigid pavements may develop hidden voids without early surface symptoms. Laboratory tests revealed that soil density significantly affects the loss of fines and resulting settlement, with better compaction reducing both. A field study assessed pavement deterioration using the pavement condition index (PCI), showing a marked decline in PCI over time when subsurface defects remained untreated. Geophysical methods such as ground penetrating radar (GPR) and multichannel analysis of surface waves (MASW) effectively identified weak zones before major damage occurred. The study emphasizes the critical need for comprehensive subsurface assessment and timely intervention to ensure sustainable pavement performance and traffic safety in urban infrastructure.