Barriers to the implementation 3d printing concrete technology in Sri Lanka

Abstract

3D Printing Concrete (3DPC) is a rapid and emerging innovation that has changed the landscape of the construction industry as we know it with its advantages that include reduced construction time, minimised material waste, improved design flexibility, and enhanced sustainability. Irrespective of the growth experienced worldwide, the adoption of 3DPC in Sri Lanka is negligible because of numerous constraints that prevent large-scale implementation. This study explores the barriers to the implementation of 3DPC in Sri Lanka through a qualitative methodology consisting of a literature review and semi-structured interviews with fourteen experts from academia and the industry. The results show a broad array of obstacles, identified in seven categories including both resource constraints and financial constraints, construction related challenges, stakeholder resistance, legal and regulatory gaps, environmental concerns, and socio-cultural barriers. These barriers were emphasising the technological, institutional, and cultural challenges Sri Lanka encounters while adopting advanced construction methods. The study concludes overcoming such barriers must follow a concerted approach of government, industry stakeholders, and academia in delivering standards, training, financial support, and awareness initiatives.