A comparative study of the life cycle assessment of natural, recycled, and oil palm shell aggregate concretes

IF 3.9

Cleaner Waste Systems Pub Date : 2025-08-22 DOI:10.1016/j.clwas.2025.100397

Sotya Astutiningsih , Dasi Agung Ospaman , Nuraziz Handika , Dwica Wulandari

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Abstract

This study explores the potential environmental impacts of replacing natural coarse aggregates with agricultural by-products and construction waste in concrete production. The research focuses on three types of concrete: oil palm shell aggregate concrete (OPSC), natural aggregate concrete (NAC), and recycled aggregate concrete (RAC). The potential environmental impact of the concrete was assessed based on its life cycle, including abiotic depletion (fuel), global warming potential, acidification, eutrophication, photochemical oxidation. In assessing these impacts, we considered the functional unit of 1 m³ and the compressive strength, CO₂ uptake over a 25-year service life of the concrete, and the allocation between natural and recycled aggregate concrete production. Preliminary findings indicate that recycled aggregate concrete is the lowest potential environmental impacts among the other concretes. The results show that RAC demonstrated the lowest environmental impact, with 8.6 % lower GWP, 10.2 % lower acidification, and 11.4 % lower abiotic depletion compared to NAC. While OPSC offered reductions in cement-related impacts but had higher transport-related emissions due to long distance transportation of raw materials.

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天然、再生和油棕壳骨料混凝土生命周期评价的比较研究

本研究探讨在混凝土生产中以农业副产品和建筑垃圾取代天然粗骨料对环境的潜在影响。研究的重点是三种类型的混凝土：油棕壳骨料混凝土（OPSC），天然骨料混凝土（NAC）和再生骨料混凝土（RAC）。根据混凝土的生命周期对其潜在的环境影响进行了评估，包括非生物耗竭（燃料）、全球变暖潜势、酸化、富营养化、光化学氧化。在评估这些影响时，我们考虑了1 m3的功能单位和抗压强度，混凝土在25年使用寿命期间的二氧化碳吸收量，以及天然和再生骨料混凝土生产之间的分配。初步研究结果表明，再生骨料混凝土是其他混凝土中潜在环境影响最小的。结果表明，RAC对环境的影响最小，与NAC相比，其GWP降低了8.6% %，酸化降低了10. %，非生物耗损降低了11. %。虽然OPSC减少了与水泥相关的影响，但由于原材料的长途运输，其与运输相关的排放更高。

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来源期刊

Cleaner Waste Systems

CiteScore

2.60

自引率

0.00%

发文量