Case Study on Carbon Footprint Assessment during Materialization Stage of Prefabricated Concrete Buildings Based on BIM
Based on the self-designed carbon footprint measurement system and the bill of quantities derived by BIM,an empirical study was carried out on the carbon footprint evaluation of four concrete construction examples in the physical and chemical stages from the six stages of building materials production,building materials transportation,component production,component transportation,site construction installation and site construction management.The results show that the carbon emission of prefabricated concrete buildings in the physicochemical stage is lower than that of traditional cast-in-place buildings,and the carbon concentration reduction can reach 29.760 1～41.947 2 kgCO2e/m2.The carbon emissions of building materials production accounted for more than 88%of the total carbon emissions of different types of concrete buildings in the physical and chemical stage,which is the main stage to achieve building carbon emission reduction,followed by the site construction stage,carbon emissions ac-counted for less than 10%,while the carbon emissions of building materials transportation,component production,component transportation and site construction management and other stages accounted for less than 2%.Steel and concrete are the main sources of carbon footprint of building materials production,accounting for nearly 30%to 50%of carbon emissions,followed by cement and masonry materials.The research can provide a theoretical reference for further carbon reduction of prefabricated concrete buildings under the background of"double carbon".
NETL
NSTL
万方数据
维普
