Comparative economic, environmental and productivity assessment of a concrete bathroom unit fabricated through 3D printing and a precast approach

Weng, Yiwei; Li, Ming Yang; Ruan, Shaoqin; Wong, Teck Neng; Tan, Ming Jen; Yeong, Kah Leong Ow

doi:10.1016/j.jclepro.2020.121245

Cited by 171 publications

(56 citation statements)

References 34 publications

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“…From a case study, Agusti-Juan and Habert [193] reported that, compared to conventional concreting, digital fabrication provides environmental benefits when applied for complex structures rather than simple geometrical shapes like wall structures. Weng et al [194] carried out a life cycle analysis and showed that 3DCP enables a reduction of about 86% CO 2 emission and about 87% energy consumption compared to a precast counterpart. A similar study indicated that the relative sustainability of the project depends primarily on the environmental and economic impact created by the production of the constituents of concrete.…”

Section: Sustainabilitymentioning

confidence: 99%

See 1 more Smart Citation

Extrusion-based concrete 3D printing from a material perspective: A state-of-the-art review

Mohan

Rahul

Schutter

et al. 2021

Cement and Concrete Composites

228

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Section: Sustainabilitymentioning

confidence: 99%

“…Also, there could be significant economic benefits, as there is no formwork. Weng et al [194] reported that the 3DCP could reduce the overall construction cost of construction by 25% when compared to precast structures primarily due to the absence of formwork. Fig.…”

Section: Sustainabilitymentioning

confidence: 99%

Extrusion-based concrete 3D printing from a material perspective: A state-of-the-art review

Mohan

Rahul

Schutter

et al. 2021

Cement and Concrete Composites

228

View full text Add to dashboard Cite

“…For economic and environmental impact assessments, the sum of material costs was obtained and life cycle CO 2 analysis of concrete (C35_O100, C24_G20, and C24_E50_G20) was conducted. The following two assumptions were established to obtain the results: (i) the analysis approach; and (ii) the significant cost of ownership [47,[52][53][54].…”

Section: Assessment Of Economic and Environmental Impacts On Concretementioning

confidence: 99%

Improving Marine Concrete Performance Based on Multiple Criteria Using Early Portland Cement and Chemical Superplasticizer Admixture

Lee

Jeong

2021

Materials

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This study sought to examine the performance design of concrete mix proportions to ensure chloride resistance and early strength with respect to C35 (35 MPa), which is the minimum compressive strength class of concrete used in a marine environment. For the proposed concrete mixture, C24 (24 MPa) was selected and binders for concrete were manufactured using a blend of OPC (ordinary Portland cement), EPC (early Portland cement), and GGBS (ground granulated blast-furnace slag). The results of the experiment confirmed that the combined use of EPC and GGBS greatly improve the early-strength development and chloride resistance of concrete. An analysis revealed that the time for removal of forms can be reduced by 5–9 h from the aspect of early concrete strength. Moreover, in terms of construction productivity, EPC and GGBS were reduced by up to 16.39 h/cycle compared to other concretes. Regarding economic and environmental impacts, EPC and GGBS were more effective than C35 concrete. This study is significant as its findings help make it possible to examine the most economical concrete mix design in relation to strength development according to the application of EPC, GGBS, and PC-based admixtures.

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“…Construction and manufacturing processes are being optimized in the use of raw materials and energy efficiency. 2,3 Learning from industrial processes, heading towards Industry 4.0, threedimensional (3D) printing technology for construction is an option that can enhance efficiency planning and manufacturing. [3][4][5][6] .…”

Section: Introductionmentioning

confidence: 99%

“…Since 1983, 7 3D printing technology has grown in most diverse industrial sectors: medicine, 8 art and design, 9 automotive industry 10 and, more recently, in construction industry. [11][12][13] Its use has allowed industry: to reduce material waste and energy consumption, 3,6,14 increase productivity, 3,6 and offer the ability to personalize products. 9,15,16 However, its implementation in construction presented new challenges than current industries: the printed element size is conditioned by the printer size 17 (the technology developed by the IAAC, "Minibuilders", arised from this problem, and achieved bigger prints than its own size 18 ); the material needs specific rheological properties, which makes it, in most cases, less sustainable and more expensive than traditional concrete; 13,19 technology does not yet have the quality levels of traditional construction processes.…”

Section: Introductionmentioning

confidence: 99%

Development of 3D printing sustainable mortars based on a bibliometric analysis

Teixeira

Schaefer

Rangel

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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In construction, three-dimensional concrete printing technology is an innovative method that opens new design possibilities, reducing the construction time process. The incremental material deposition allows organic shapes without formwork, a mandatory constraint in preparatory phases of conventional complex concrete structures. Nowadays, in three-dimensional printing for construction industry, concrete is the most used material due to its workability, extrudability, and pumpability properties favorable for the printing conditions. Hence, this composition still has a poor sustainable efficiency due to the high levels of Portland Cement. In this research, a reduction of this material was studied and experimented searching for a mortar composition with better ecological footprint, with the objective of decreasing the CO2 emissions. A bibliometric analysis was made to study the constituents of a mortar for three-dimensional printing and respective dosage. The knowledge acquired in the analysis of the compositions contributed to the development of mortars with lower Portland Cement content. A mechanical extruder was used to check the extrusion capacity of the developed mortars, and the best compositions are presented.

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Comparative economic, environmental and productivity assessment of a concrete bathroom unit fabricated through 3D printing and a precast approach

Cited by 171 publications

References 34 publications

Extrusion-based concrete 3D printing from a material perspective: A state-of-the-art review

Extrusion-based concrete 3D printing from a material perspective: A state-of-the-art review

Improving Marine Concrete Performance Based on Multiple Criteria Using Early Portland Cement and Chemical Superplasticizer Admixture

Development of 3D printing sustainable mortars based on a bibliometric analysis

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