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Comparative economic, environmental and productivity assessment of a concrete bathroom unit fabricated through 3D printing and a precast approach
Journal of Cleaner Production ( IF 9.7 ) Pub Date : 2020-03-25 , DOI: 10.1016/j.jclepro.2020.121245
Yiwei Weng , Mingyang Li , Shaoqin Ruan , Teck Neng Wong , Ming Jen Tan , Kah Leong Ow Yeong , Shunzhi Qian

The purpose of this study is to perform a comparative study of economic cost, environmental impacts, and productivity associated with manufacturing a prefabricated bathroom unit (PBU, L: 1,620 mm; W: 1,500 mm; H: 2,800 mm) via extrusion-based 3D concrete printing (3DCP) and a precast approach, respectively. The scope of this study includes material consumption, electricity expenditure, labor cost/productivity, and installation cycle. The results reveal that a PBU fabricated by 3DCP achieves a reduction of 25.4% in overall cost, 85.9% in CO2 emission, and 87.1% in energy consumption compared to the precast one. 3DCP also realizes a PBU with reduced self-weight (i.e., 26.2% lighter) and higher productivity (i.e., 48.1% improved) compared to the precast one. The above enhancements were found to be ascribed to the formwork-free fabrication in 3DCP. Finally, sensitivity analysis reveals the significance of formwork re-usage to the outcomes and demonstrates the potentials of 3DCP for small batches or customized manufacturing of PBUs.



中文翻译:

通过3D打印和预制方法制造的混凝土浴室单元的经济,环境和生产率的比较评估

这项研究的目的是对基于预制3D的预制浴室单元(PBU,L:1,620 mm; W:1,500 mm; H:2,800 mm)的制造相关的经济成本,环境影响和生产率进行比较研究。具体印刷(3DCP)和预制方法。本研究的范围包括材料消耗,电费,人工成本/生产率和安装周期。结果表明,由3DCP制造的PBU可使总体成本降低25.4%,CO 2降低85.9%排放,与预制的相比,能耗降低了87.1%。与预制件相比,3DCP还实现了PBU的自重减轻(即减轻了26.2%)和更高的生产率(即提高了48.1%)。发现上述增强归因于3DCP中的无模板制造。最后,敏感性分析揭示了模板再利用对结果的重要性,并证明了3DCP在小批量或定制化PBU制造中的潜力。

更新日期:2020-03-26
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