Evaluation research of emission reduction efficiency in the materialization stage of MiC
As the main direction of the future construction industry,it's particularly important to evaluate the emission reduction efficiency of Modular Integrated Construction(MiC),and the main reason for the difference in carbon emission between MiC and cast-in-place buildings or traditional prefabricated buildings is focused on the materialization stage.Therefore,this paper digs deeper into the carbon emission impact factors in the molularization stage of MiC and establishes an evaluation index system from six aspects:project profile,building materials consumption,energy consumption,transportation and storage,construction organization,and ecological environment.Besides we verify the feasibility and universality of the evaluation indexes in the latter part of the paper.On this basis,the FAHP evaluation method is used to construct an evaluation model of emission reduction efficiency in the modularization phase.Finally,Both the rationality of the evaluation indexes and the feasibility of the efficiency evaluation model are verified by combining the MiC project cases,and energy-saving and emission reduction measures are proposed from four aspects:building materials consumption,project profile,construction organization,and energy consumption.The case analysis shows that the consumption of building materials has the greatest impact on the efficiency of carbon emission,followed by project profile and construction organization,then energy consumption,ecological environment,transportation,and storage;the choice of modular prefabricated materials and the use of green materials are particularly important;the MiC project case has great advantages in energy saving and emission reduction in project profile and construction organization,and energy saving and emission reduction in four aspects:building materials consumption,energy consumption,transportation and storage,and ecological environment still need to be strengthened.Through the evaluation study of emission reduction efficiency in the materialization stage of MiC,we explore its energy saving and emission reduction potential and provide a reference for energy saving and emission reduction.