A critical review for applying three-dimensional concrete wall printing technology in Egypt

Geneidy, Omar; Ismaeel, Walaa S.E.; Abbas, Ayman

doi:10.1080/00038628.2019.1596066

Cited by 17 publications

(12 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Many applications have been printed and evaluated, such as apartments, bridges [44], gardens, emergency shelters, and bus stops. With the addition of PCM, these facilities can have sufficient thermal comfort.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Evaluation of Printability and Thermal Properties of 3D Printed Concrete Mixed with Phase Change Materials

Cui

Cao

et al. 2022

Energies

View full text Add to dashboard Cite

Three-dimensional (3D) printed concrete has recently received considerable research attention. In buildings, phase change materials (PCMs) with excellent thermoregulatory properties and thermal storage capacity can improve the insulation capacity of external walls and reduce energy consumption. In this study, microencapsulated paraffin was added to a 3D printable material and a 3D printed phase-change concrete was developed, resulting in good printability and buildability. The compressive and flexural strengths were declined maximally by 44.6% and 37.5%, respectively, with 20 wt% PCM mixed. Results from 3D printed room models proved the thermo-regulated performance by regulating the room temperature when mixed with 20 wt% PCM. With the addition of PCM, 3D printed facilities can have sufficient thermal comfort.

show abstract

Section: Mechanical Propertiesmentioning

confidence: 99%

Evaluation of Printability and Thermal Properties of 3D Printed Concrete Mixed with Phase Change Materials

Cui

Cao

et al. 2022

Energies

View full text Add to dashboard Cite

show abstract

“…A second advantage of 3D-printed construction over conventional construction is the ability of the printer to print continuously, with only limited time off for cleaning and maintenance [16]. Each dragon's tooth was printed in an average of 57 min, with an average of 60 min elapsed time per dragon's tooth.…”

Section: Process Efficiencymentioning

confidence: 99%

“…A third significant advantage of 3D-printed construction over conventional construction is increased automation, which translates to a reduction in construction labor demand [16]. During Exercise Burgeon Strike, only two personnel were required at any given time to maintain printing operations: one laborer monitored the computer and made minor manual adjustments to print speed and pump speed as needed, while the other monitored the pump and added additional bags of pre-mixed material when required.…”

Section: Labor Demandmentioning

confidence: 99%

The Viability and Simplicity of 3D-Printed Construction: A Military Case Study

et al. 2020

View full text Add to dashboard Cite

In November 2019, U.S. Marines, Air Force, and Army Corps of Engineers personnel demonstrated the viability and simplicity of three-dimensionally (3D)-printed construction in a controlled environment at the U.S. Army Engineer Research and Development Center—Construction Engineering Research Laboratory in Champaign, Illinois. The tri-service exercise spanned three days and culminated in the construction of three 1 m × 1 m × 1 m (3 ft × 3 ft × 3 ft) concrete dragon’s teeth (square pyramid military fortifications used to defend against tanks and armored vehicles) and several custom-designed objects. The structural components were printed using a custom-built, gantry-style printer called ACES Lite 2 and a commercially available, proprietary mortar mix. This paper examines the viability of using 3D-printed construction in remote, isolated, and expeditionary environments by considering the benefits and challenges associated with the printing materials, structural design, process efficiency, labor demands, logistical considerations, environmental impact, and project cost. Based on the results of this exercise, 3D-printed construction was found to be faster, safer, less labor-intensive, and more structurally efficient than conventional construction methods: the dragon’s teeth were printed in an average of 57 min each and required only two laborers. However, the use of commercially procured, pre-mixed materials introduced additional cost, logistical burden, and adverse environmental impact as compared to traditional, on-site concrete mixing and production. Finally, this paper suggests future applications and areas of further research for 3D-printed construction.

show abstract

“…A substantial share of recent research on 3DP for construction addresses 3D printing of cement and mortar-like materials. As a result, there has been a huge development in 3D printing systems for cement-based materials in recent years (Geneidy, Ismaeel, and Abbas 2019;Shakor et al 2019). Different types of extrusion systems are currently used for 3D printing; varying from pneumatic pumps and electromechanical ram extruders.…”

Section: Introductionmentioning

confidence: 99%