Assessing carbon dioxide emissions for long-span cable stay bridge of railway construction project
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Abstract
The purpose of this study was to assess the quantity of greenhouse gas emissions associated with the long-span cable stay bridge of railway construction project. The amount of greenhouse gas in term of carbon dioxide equivalent (CO2-eq) emission was calculated from the construction project of a double-track railway cable stay bridge across the Mae Klong River in Thailand. Then, the results of the calculation were classified according to work types such as bored pile, foundation, column and pier head, pylon and segment, pre-stressed wire and cable. The study also included the emission of machinery and material transportation on the site, from cradle to gate and gate to gate. Both national and international database of carbon dioxide emissions coefficients were applied. The results showed that total CO2-eq emission emit 10,144,522 kg CO2-eq or 29,837 tons CO2-eq per kilometer. The types of work that emit the most carbon dioxide is pylon and segment which accounted for 36.0%. Meanwhile, the CO2-eq emission from bored piles, footing, column and pier head, prestressed wire and cable, and transportation of machinery and material within site accounted for 23.0%, 18.0%, 10.0%, 9.5%, and 3.5%, respectively. To sum up, the CO2-eq emission is caused by up to 89.0% of construction materials production.
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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
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