การประมาณค่าคาร์บอนแฝง : กรณีศึกษาอาคารโรงงานแห่งหนึ่ง

Abstract

The construction of buildings causes greenhouse gas emissions. This study aims to estimate and analyze the embodied carbon in the structural and architectural elements of a case study: a one-story reinforced concrete factory building with an area of 90 square meters in Chiang Mai Province. The research followed the life cycle assessment framework of ISO 14040 standards and the construction life cycle assessment framework of the BS EN 15978:2011 standard. Greenhouse gas-emitting activities during the factory construction were identified using the work breakdown structure technique. The study revealed that the total embodied carbon from all work of the factory amounted to 29,353.47 kgCO2e, with structural work and architectural work accounting for 15,139.16 kgCO2e and 11,939.44 kgCO2e, respectively. Consequently, the ratio of embodied carbon in structural work to architectural work was 1:0.79 and Construction Site Support accounting for 2,274.87 kgCO2e. Furthermore, construction products (A1-3) amounted to 22,926.93 kgCO2e, the transports (A4) amounted to 1,338.38 kgCO2e while emissions due to site activities (A5a) amounted to 3,547.33 kgCO2e and materials wasted on site (A5w) amounted to 1,540.83 kgCO2e. The study also identified that Reinforced Concrete work, Walling work, and Structural work are the primary source of embodied carbon in the factory, contributing 67.50 %.