Analysis of carbon reduction benefits from construction waste resource utilization
JIANG Jing
LI Fei
ZHANG Zheng
ZHOU Li'an
Abstract：To quantitatively assess the carbon reduction benefits of construction waste resource utilization,the life cycle as-sessment method is applied,with direct landfilling as the baseline,to construct a carbon emission calculation method for stages in-cluding raw material and waste transportation,production of recycled aggregates,and waste landfilling.A carbon emission accounting framework is established,and a typical construction waste resource utilization plant in Beijing is taken as an example to calculate and analyze carbon emission reduction pathways.The research results show that comprehensive utilization of 100 million tons of construction waste in the case study can reduce CO2 emissions by approximately 1.302 million tons.During the life cycle of con-struction waste resource utilization,emission reduction is influenced by transportation distance and resource utilization rate.When the transportation distance increases to 60 km,the emission reduction rate of electric transport vehicles is 11.7％slower than that of diesel-powered transport vehicles.When the resource utilization rate is higher than 90％,the emission reduction of electric transport vehicles increases by 3.39 kgCO2e compared to diesel-powered transport vehicles,making electric transport vehicles a more effective emission reduction choice.
Keywords：recycled aggregateslife cycle assessmentcarbon emissionstransportation distanceresource utilization rate
Publication Date：2023-11-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 6-10,43 )