In construction industry, apart from cement, the aggregate type, mix design method and transport distance of raw materials also contribute significantly to the environment related issues. This paper compares environment impacts of recycled coarse aggregate (RCA) and Particle Packing Method (PPM) of mix design approach with the concrete proportioned using natural coarse aggregate (NCA) and IS code method. The system boundary is determined based on cradle-to-gate theory. The primary data regarding the preparation of NCA and RCA are collected from the respective production facilities and Ecoinvent 3.01 is used as background database. Abiotic depletion, abiotic depletion due to fossil fuels, global warming potential, depletion of ozone layer, formation of tropospheric ozone photochemical oxidants, acidification potential, and eutrophication potential are measured using CML baseline method with the help of SimaPro software. Lower environmental impacts are observed for PPM mix designed concrete owing to the requirement of lesser cement quantity. The combination of RCA and PPM mix design approach exhibits minimum environmental impacts. Transport activities are the second largest contributor after cement and hence, sensitivity analysis is carried out to evaluate the influence of different transport scenarios and distances in Indian context. For comparable environmental impact with natural aggregate concrete proportioned using IS code method, the maximum possible supply distance of RCA is determined for different collection distance of C&D waste. The collection distance of C&D waste can be incremented by 9–12 km for each 50 km increment in the supply distance of processed RCA to prepare recycled aggregate concrete.

在建筑行业中，除水泥外，集料的类型，混合料的设计方法和原材料的运输距离也对与环境有关的问题做出了重大贡献。本文将再生设计的粗骨料（RCA）和颗粒填充法（PPM）的混合料设计方法与采用天然粗骨料（NCA）和IS代码方法进行混凝土配比的环境影响进行了比较。系统边界是根据从摇篮到大门的理论确定的。有关NCA和RCA制备的主要数据是从各自的生产设施中收集的，Ecoinvent 3.01被用作背景数据库。非生物消耗，化石燃料导致的非生物消耗，全球变暖的潜力，臭氧层的消耗，对流层臭氧光化学氧化剂的形成，酸化潜力，富营养化潜力和富营养化潜力是在SimaPro软件的帮助下使用CML基线方法进行测量的。由于需要较少的水泥量，因此PPM混合料设计的混凝土对环境的影响较小。RCA和PPM混合设计方法的结合对环境的影响最小。运输活动是仅次于水泥的第二大贡献者，因此，进行了敏感性分析，以评估印度语境下不同运输情景和距离的影响。为了使用IS代码方法按比例分配天然骨料混凝土对环境的可比性，应为不同的C＆D废物收集距离确定RCA的最大可能供应距离。C＆的收集距离