An Analysis of the Characteristics of Environmental Impact for PSC Beam Bridges using Life Cycle Assessment

This study aims to analyze characteristics of environmental load for the construction phase of PSC beam bridge based on Life Cy cle Assessment. For detail computation of environmental load, the construction materials and energy consumption are derived from th e BOQ, also connecting with environmental load by Korea LCI Database Information Network. The characteristic of environmental impact was analyzed by 25 cases and cut-off ratio was 80% to 94%. The result sorted by construction materials revealed that environmental load were 53.3% for ready-mixed concrete, 9.6% for wire rod, 7.8% for rebar, 6.8% for cement, 5.5% for plywood, a nd 5.2% for energy. Furthermore, the result of environmental impact revealed that 45.5% for global warming, 30.4% for abiotic reso urces depletion, 10.5% for human toxicity, and 8.9% for photochemical oxidant creation. In the future, we can make a decision conside ring environmental load based on LCA at design phase.Key words : LCA (Life Cycle Assessment), LCI (Life Cycle Inventory), Environmental load, PSC beam bridge, BOQ (Bill of Quantity) 2015 “ ” . ISO 14040 Series LCA (Life Cycle Assessment) . PSC beam (Life Cycle Assessment, LCA) . 34 , (53.3%), (9.6%), (7.8%), (6.8%) (5.5%), (5.2%) , (45.5%), (30.4%), (10.5%), (8.9%) . LCA , . : , , , PSC beam , Construction Management