Scholarlink

<p>Human activities and recurring natural disasters generate large quantities of construction waste while simultaneously increasing the demand for low-cost and emergency shelters. This study investigates the mechanical and hygrothermal performance of rammed earth incorporating construction and demolition waste compared to conventional red brick construction under hot climatic conditions. Two full-scale experimental building units (3.1&#xa0;m × 3.1&#xa0;m × 2.9&#xa0;m) were constructed and monitored under two test scenarios: a baseline condition without surface treatment (Test 1) and a modified condition using a reflective lime-based coating (Test 2). Results show that the rammed earth unit achieved significantly improved thermal stability, with indoor temperature reductions of 4–13&#xa0;°C and time lag up to 420&#xa0;min, compared to 2–11&#xa0;°C and shorter delays in the red brick unit. Relative humidity fluctuations were also significantly damped due to the hygroscopic nature of rammed earth. The findings confirm that thermal mass is the dominant factor governing indoor environmental stability, while surface reflectivity provides secondary improvement. The study provides full-scale experimental evidence supporting the use of construction waste-based earthen materials for sustainable shelter applications in hot climates.</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

Thermal and mechanical performance of rammed earth incorporating construction and demolition waste under real climatic conditions

  • 期刊论文

  • 发表日期：

    2026年6月17日

查看全文
  • R. Y. M. Allam,
  • Rafik Belarbi,
  • Mohamed A. Sultan,
  • Ahmed M. Tahwia,
  • Marwa M. Elbeiali,
  • Waleed Fouad Al-kolaly,
  • Rowan Mohamed Mansour,
  • Hossam Magdy Balaha,
  • Nahed Elawady,
  • M. A. Elfouly,
  • Mona Elwazir

摘要

Human activities and recurring natural disasters generate large quantities of construction waste while simultaneously increasing the demand for low-cost and emergency shelters. This study investigates the mechanical and hygrothermal performance of rammed earth incorporating construction and demolition waste compared to conventional red brick construction under hot climatic conditions. Two full-scale experimental building units (3.1 m × 3.1 m × 2.9 m) were constructed and monitored under two test scenarios: a baseline condition without surface treatment (Test 1) and a modified condition using a reflective lime-based coating (Test 2). Results show that the rammed earth unit achieved significantly improved thermal stability, with indoor temperature reductions of 4–13 °C and time lag up to 420 min, compared to 2–11 °C and shorter delays in the red brick unit. Relative humidity fluctuations were also significantly damped due to the hygroscopic nature of rammed earth. The findings confirm that thermal mass is the dominant factor governing indoor environmental stability, while surface reflectivity provides secondary improvement. The study provides full-scale experimental evidence supporting the use of construction waste-based earthen materials for sustainable shelter applications in hot climates.