PROPOSAL OF A SIMPLE ESTIMATION METHOD OF CO₂ EMISSIONS FROM PC PIER CONSTRUCTION BASED ON TREND ANAlYSIS

Abstract

 It is desirable to position efforts to decarbonize port construction in the formation of a "carbon neutral port" (CNP). In order to efficiently reduce CO₂ emissions during construction of port structures, a simple estimation of CO₂ emissions at the design stage would be useful for evaluating specific low-carbon measures and their effects.

 In this study, CO₂ emissions during construction were first calculated for six PC piers, and a trend analysis was conducted. In addition, a simple estimation method of CO₂ emissions from the superstructure of PC piers was studied for use in the design phase. As a result of the trend analysis, most of the CO₂ emissions were derived from materials, and a correlation was observed between the CO₂ emissions and the total mass of the steel pipe piles. The proposed simplified estimation method was able to estimate the CO₂ emissions from the construction of the superstructure with an accuracy of 65 to 87 %.