Scholarlink

The utilization of recycled aggregate from construction demolition waste in road subgrade construction is a crucial step in addressing the issue of waste dumping, leading to significant environmental and economic benefits. However, limited research has been conducted on the particle migration and crushing characteristics of recycled aggregate when used as cement-stabilized materials during field compaction. To address this gap, this study was conducted in Hunan to analyze the chemical and physical properties of cement-stabilized recycled aggregate materials. Subsequently, compaction procedures for cement-stabilized recycled aggregate subgrade were presented, and the motion and breakage characteristics of the aggregate particles were tested. The results revealed that the acceleration of cement-stabilized recycled aggregate particles under weak vibration from heavy steel wheels was 10–45 times higher compared to mechanical static compaction. Under static compaction using engineering machinery, the aggregate particles primarily rotated along vertical and lateral directions, whereas under weak vibration from heavy steel wheels, the rotation was predominantly along the vertical direction. Moreover, under the weak vibration of the steel wheel, particles primarily turned along the vertical direction, while under the static pressure from engineering machinery, the vibration energy of particles mainly transferred along the vertical and longitudinal directions. Conversely, under the weak vibration from the heavy steel-wheel vibratory roller, the energy is transferred along the vertical direction and the traffic direction. Additionally, it was observed that the particle breakage of cement-stabilized recycled aggregate particles during field compaction was less severe compared to laboratory static compaction. The sub-particle distribution curve of the mixture under field compaction exhibited an intermittent pattern, distinctly different from the more pronounced particle distribution curve observed under laboratory static compaction.

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

Research on Field Compaction Characteristics of Cement-Stabilized Recycled Aggregate Road Subgrade Based on SmartRock

  • 会议论文

  • 发表日期：

    2025年

查看全文
  • Xiao Yuanjie,
  • Yang Tao,
  • Wang Meng,
  • Chen Yuliang,
  • Meng Fanwei,
  • Wang Xiaoming,
  • Hua Wenjun,
  • Wang Zheng

摘要

The utilization of recycled aggregate from construction demolition waste in road subgrade construction is a crucial step in addressing the issue of waste dumping, leading to significant environmental and economic benefits. However, limited research has been conducted on the particle migration and crushing characteristics of recycled aggregate when used as cement-stabilized materials during field compaction. To address this gap, this study was conducted in Hunan to analyze the chemical and physical properties of cement-stabilized recycled aggregate materials. Subsequently, compaction procedures for cement-stabilized recycled aggregate subgrade were presented, and the motion and breakage characteristics of the aggregate particles were tested. The results revealed that the acceleration of cement-stabilized recycled aggregate particles under weak vibration from heavy steel wheels was 10–45 times higher compared to mechanical static compaction. Under static compaction using engineering machinery, the aggregate particles primarily rotated along vertical and lateral directions, whereas under weak vibration from heavy steel wheels, the rotation was predominantly along the vertical direction. Moreover, under the weak vibration of the steel wheel, particles primarily turned along the vertical direction, while under the static pressure from engineering machinery, the vibration energy of particles mainly transferred along the vertical and longitudinal directions. Conversely, under the weak vibration from the heavy steel-wheel vibratory roller, the energy is transferred along the vertical direction and the traffic direction. Additionally, it was observed that the particle breakage of cement-stabilized recycled aggregate particles during field compaction was less severe compared to laboratory static compaction. The sub-particle distribution curve of the mixture under field compaction exhibited an intermittent pattern, distinctly different from the more pronounced particle distribution curve observed under laboratory static compaction.