Assessment of concrete prefabrication adoption in Tigray Region: barriers, benefits, and strategic framework for implementation.

Abstract

The global construction industry is increasingly pivoting toward modular and off-site manufacturing to address growing demands for housing and infrastructure. In the Tigray region of Ethiopia, where post-conflict reconstruction requires urgent and scalable solutions, the adoption of efficient building methodologies has become a developmental priority. This research investigates the impact of concrete prefabrication encompassing off-site manufacturing, logistics, and on-site assembly on construction efficiency and economic viability. The study employs a mixed-methods research design, integrating interviews with industry professionals and comparative case studies of conventional versus prefabricated projects. Key Performance Indicators (KPIs) such as labor costs, material utilization, project duration, and waste generation were evaluated. Data collection was supported by 95 distributed questionnaires, yielding 73 valid responses (a 76.8% response rate), providing a robust empirical basis for analysis. The findings demonstrate that projects utilizing prefabricated components achieved a 30% to 60% reduction in construction duration, primarily due to the concurrent execution of factory production and site preparation. Furthermore, the study identified cost savings ranging from 5% to 20%, driven by enhanced material efficiency and reduced on-site labor requirements. The controlled factory environment also contributed to superior quality control and structural consistency compared to traditional methods. Despite these advantages, significant barriers to adoption remain, including limited local manufacturing capacity, logistical constraints, and a shortage of specialized technical expertise. To mitigate these challenges, the study recommends targeted institutional support, investment in regional production facilities, and the implementation of specialized vocational training. Strengthening policy frameworks and fostering public private partnerships will be essential to scaling these technologies. Ultimately, this research concludes that concrete prefabrication provides a rapid, cost-effective, and resilient pathway for the reconstruction and long-term development of the Tigray region.