Resources, Conservation and Recycling ( IF 13.2 ) Pub Date : 2023-04-23 , DOI: 10.1016/j.resconrec.2023.107007 Kaihan Cai, Haoxuan Wang, Jiasi Wang, Jing Bai, Jian Zuo, Kuongin Chan, Kaman Lai, Qingbin Song
Prefabricated light-steel buildings (PLB), as a typical prefabricated building, are regarded as a potential solution in the sustainable building process. However, few researches have systematically identified the GHG emissions and reduction potential of PLBs from the whole lifecycle perspective. Thus, taking two low-rise buildings with similar building scales as the research objects, this study is designed to understand the lifecycle GHG emissions and reduction potential of PLB and traditional cast-in-place building (TCB) using Life Cycle Assessment method. The results show that the life-cycle GHG emissions of PLB and TCB are 2848.58 and 3055.11 kg CO2 eq. /m2, respectively, implying a 6.76% reduction potential of PLB. The use and operation phase of PLB (85.76%) and TCB (83.57%) accounts for the majority of GHG emissions. Compared with TCB, the GHG emissions in the construction phase of PLB are reduced by 12.45%, and its environment benefit in the end-of-life (EoL) phase is 170.05% higher. Aside from the use and operation phase, the reduction potential of PLB GHG emissions, compared with TCB, is 59.58%, in the construction and EoL phases together. Overall, this study evaluates PLB and TCB' GHG emissions, and finds sustainable buildings and effective reduction emission measures, which will promote the green development of construction industry in China.
中文翻译:
与传统现浇建筑相比,预制轻钢建筑减少建筑行业生命周期温室气体排放
装配式轻钢建筑(PLB)作为典型的装配式建筑,被认为是可持续建筑过程中的一种潜在解决方案。然而,很少有研究从全生命周期的角度系统地识别PLBs的温室气体排放和减排潜力。因此,本研究以两座建筑规模相似的低层建筑为研究对象,采用生命周期评估方法,了解公共小巴和传统现浇建筑(TCB)的生命周期温室气体排放和减排潜力。结果表明,PLB和TCB的全生命周期温室气体排放量分别为2848.58和3055.11 kg CO 2 eq。/米2,分别意味着 PLB 的减少潜力为 6.76%。PLB(85.76%)和TCB(83.57%)的使用和运营阶段占温室气体排放量的大部分。与TCB相比,PLB建设阶段温室气体排放量减少12.45%,报废阶段环境效益提高170.05%。除了使用和运营阶段,PLB 的温室气体减排潜力与 TCB 相比,在建设和 EoL 阶段合计为 59.58%。总体而言,本研究评估PLB和TCB的温室气体排放,寻找可持续建筑和有效的减排措施,将促进我国建筑业的绿色发展。