Understanding barriers and enablers of carbon data management for carbon assessment in the Sri Lankan construction industry: a stakeholder perspective

Abstract

Accurate carbon assessment is essential for reducing emissions in the construction industry, as it ensures reliable decision-making, compliance with sustainability targets, and identification of effective reduction strategies. Yet several challenges related to data management hinder its effective implementation in Sri Lanka. A mixed approach was used, involving 18 expert interviews and a questionnaire survey with 69 responses from professionals experienced in carbon assessment and sustainable construction. The analysis revealed that the highest-ranking barriers include the lack of national databases (RII = 0.93), dependence on international datasets, and incomplete or unavailable project-specific data. Additional, challenges related to embodied energy estimation, verification of self-reported data, and inadequate stakeholder coordination were also highlighted. On the other hand, the study identified several enablers, including the use of digital tools such as Building Information Modelling and estimating software, national databases, integration of carbon data during early design stages, and increased awareness among stakeholders. The research emphasises the need for a national database, structured data-sharing practices, government support to overcome prevailing challenges. The findings contribute valuable insights for policymakers, professionals, and academics aiming to enhance the reliability and consistency of carbon assessments in Sri Lankan construction projects.