Analysis and Comparison of Carbon Emission Indicators in the Materialization Stage of Masonry Structures
To study carbon emission indicators in the materialization stage and promote the low-carbon development of masonry structures,a process-based method is applied to establish a calculation model for carbon emission indicators,considering the volume and length of walls as functional units.Based on the engineering construction quota and on-site measured data,carbon emission indicators of six types of masonry walls,including sintered shale hollow brick masonry,concrete solid brick masonry,autoclaved aerated concrete block masonry,concrete hollow block masonry,reinforced concrete block masonry,and prefabricated reinforced concrete block masonry,were compared.The results indicate that carbon emission indicators per unit volume or length of confined masonry are significantly higher than those of unreinforced masonry.However,carbon emission indicators that provide the same vertical bearing capacity are only about 71%of those of unreinforced masonry.Moreover,material production and transportation are the main influencing factors for carbon emission indicators in the materialization stage of masonry structures.Developing lightweight,low-carbon,recyclable,and localized masonry materials can effectively reduce carbon emissions.
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