Digital fabrication techniques, in recent decades, have provided the basis of a sustainable revolution in the construction industry. However, selecting the digital fabrication method in terms of manufacturability and functionality requirements is a complex problem. This paper presents alternatives and criteria for selection of digital fabrication techniques by adopting the multi-criteria decision-making technique. The alternatives considered in the study are concrete three-dimensional (3D) printing, shotcrete, smart dynamic casting, material intrusion, mesh molding, injection concrete 3D printing, and thin forming techniques. The criteria include formwork utilization, reinforcement incorporation, geometrical complexity, material enhancement, assembly complexity, surface finish, and build area. It demonstrates different multi-criteria decision-making techniques, with both subjective and objective weighting methods. The given ranking is based on the current condition of digital fabrication in the construction industry. The study reveals that in the selection of digital fabrication techniques, the criteria including reinforcement incorporation, build area, and geometrical complexity play a pivotal role, collectively accounting for nearly 70% of the overall weighting. Among the evaluated techniques, concrete 3D printing emerged as the best performer, however the shotcrete and mesh molding techniques in the second and third positions.
. [J]. Frontiers of Structural and Civil Engineering, 2024, 18(7): 977-997.
M. P. SALAIMANIMAGUDAM, J. JAYAPRAKASH. Selection of digital fabrication technique in the construction industry—A multi-criteria decision-making approach. Front. Struct. Civ. Eng., 2024, 18(7): 977-997.
P F YuanZ ChenL Zhang. Form finding for 3D printed pedestrian bridges. In: Proceedings of 23rd CAADRIA Conference. Hong Kong, China: CAADRIA, 225–234
2
Hadid ZahaResearch Group (BRG) BlockZurich ETH. Striatus 3D Printed Concrete Bridge—Zaha Hadid Architects. 2021. Available at the website of Zaha Hadid architects
3
Anteagroup. Our first 3D-printed bridge sees the light of day. 2020. Available at the website of Anteagroup
4
Q ZhanX ZhouP F Yuan. Digital design and fabrication of a 3D concrete printed prestressed bridge. In: Proceedings of 26th CAADRIA Conference. Hong Kong, China: CAADRIA, 663–672
5
G Ma. The longest- span prefabricated 3D-printed concrete bridge completed at Hebei. 2019. Available at the website of Hebei University of Technology
6
O Pons-Valladares, M Casanovas-Rubio M del, J Armengou, A de la Fuente. Approach for sustainability assessment for footbridge construction technologies: Application to the first world D-shape 3D-printed fiber-reinforced mortar footbridge in Madrid. Journal of Cleaner Production, 2023, 394: 136369 https://doi.org/10.1016/j.jclepro.2023.136369
7
T A Salet, Z Y Ahmed, F P Bos, H L Laagland. Design of a 3D printed concrete bridge by testing. Virtual and Physical Prototyping, 2018, 13(3): 222–236 https://doi.org/10.1080/17452759.2018.1476064
8
M Bazli, H Ashrafi, A Rajabipour, C Kutay. 3D printing for remote housing: Benefits and challenges. Automation in Construction, 2023, 148: 104772 https://doi.org/10.1016/j.autcon.2023.104772
9
R WolfsD BosT Salet. Lessons learned of project Milestone: The first 3D printed concrete house in the Netherlands. Materials Today: Proceedings, 2023
10
J BurgerP Aejmelaeus-LindströmS GürelF NiketićE Lloret-FritschiR J FlattF GramazioM Kohler. Eggshell Pavilion: A reinforced concrete structure fabricated using robotically 3D printed formwork. Construction Robotics, 2023: 213–233
11
L Prasittisopin, T Sakdanaraseth, V Horayangkura. Design and construction method of a 3D concrete printing self-supporting curvilinear pavilion. Journal of Architectural Engineering, 2021, 27(3): 05021006 https://doi.org/10.1061/(ASCE)AE.1943-5568.0000485
12
N Dörfler, J K, F Hack, M N. Mobile robotic fabrication beyond factory conditions: Case study Mesh Mould wall of the DFAB HOUSE. Construction Robotics, 2019, 3: 53–67 https://doi.org/10.1007/s41693-019-00020-w
13
N HackW LauerF GramazioM Kohler. Mesh Mould: robotically fabricated metal meshes as concrete formwork and reinforcement. In: Proceedings of the 11th International Symposium on Ferrocement and 3rd ICTRC International Conference on Textile Reinforced Concrete. Aachen: RILEM Publications, 2015, 1–13
14
N P Hack. Mesh Mould A robotically fabricated structural stay-in-place formwork system. Dissertation for the Doctoral Degree. Zurich: ETH Zurich, 2018
15
E Lloret Fritschi. Smart Dynamic Casting—A digital fabrication method for non- standard concrete structures. Dissertation for the Doctoral Degree. Zurich: ETH Zurich, 2016
16
J BurgerE Lloret-FritschiN TahaF ScottoT DemoulinJ Mata-FalcónF GramazioM KohlerR J Flatt. Design and fabrication of a non-standard, structural concrete column using eggshell: Ultra-thin, 3D printed formwork. In: Proceedings of Second RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2020 2. Eindhoven: Springer International Publishing, 2020: 1104–1115
17
J Burger, E Lloret-Fritschi, F Scotto, T Demoulin, L Gebhard, J Mata-Falcón, F Gramazio, M Kohler, R J Flatt. Eggshell: Ultra-thin three-dimensional printed formwork for concrete structures. 3D Printing Additive Manufacturing, 2020, 7(2): 49–59 https://doi.org/10.1089/3dp.2019.0197
18
T Wangler, E Lloret, L Reiter, N Hack, F Gramazio, M Kohler, M Bernhard, B Dillenburger, J Buchli, N Roussel. et al.. Digital concrete: Opportunities and challenges. RILEM Technical Letters, 2016, 1: 67–75 https://doi.org/10.21809/rilemtechlett.2016.16
19
B Panda, Y W D Tay, S C Paul, M J Tan. Current challenges and future potential of 3D concrete printing. Materialwissenschaft und Werkstofftechnik, 2018, 49(5): 666–673 https://doi.org/10.1002/mawe.201700279
20
C Menna, J Mata-falcón, F P Bos, G Vantyghem, L Ferrara, D Asprone, T Salet, W Kaufmann. Opportunities and challenges for structural engineering of digitally fabricated concrete. Cement and Concrete Research, 2020, 133: 106079 https://doi.org/10.1016/j.cemconres.2020.106079
21
D Lowke, E Dini, A Perrot, D Weger, C Gehlen, B Dillenburger. Particle-bed 3D printing in concrete construction—Possibilities and challenges. Cement and Concrete Research, 2018, 112: 50–65 https://doi.org/10.1016/j.cemconres.2018.05.018
22
F Bos, R Wolfs, Z Ahmed, T Salet. Additive manufacturing of concrete in construction: Potentials and challenges of 3D concrete printing. Virtual and Physical Prototyping, 2016, 11(3): 209–225 https://doi.org/10.1080/17452759.2016.1209867
23
M P Salaimanimagudam, J Jayaprakash. Optimum selection of reinforcement, assembly, and formwork system for digital fabrication technique in construction industry—A critical review. Structures, 2022, 46: 725–749 https://doi.org/10.1016/j.istruc.2022.10.094
24
R A Buswell, W R Leal de Silva, S Z Jones, J Dirrenberger. 3D printing using concrete extrusion: A roadmap for research. Cement and Concrete Research, 2018, 112: 37–49 https://doi.org/10.1016/j.cemconres.2018.05.006
25
G de Schutter, K Lesage, V Mechtcherine, V N Nerella, G Habert, I Agusti-Juan. Vision of 3D printing with concrete—Technical, economic and environmental potentials. Cement and Concrete Research, 2018, 112: 25–36 https://doi.org/10.1016/j.cemconres.2018.06.001
26
S Kristombu Baduge, S Navaratnam, Y Abu-Zidan, T McCormack, K Nguyen, P Mendis, G Zhang, L Aye. Improving performance of additive manufactured (3D printed) concrete: A review on material mix design, processing, interlayer bonding, and reinforcing methods. Structures, 2021, 29: 1597–1609 https://doi.org/10.1016/j.istruc.2020.12.061
27
T Pan, Y Jiang, H He, Y Wang, K Yin. Effect of structural build-up on interlayer bond strength of 3D printed cement mortars. Materials, 2021, 14(2): 1–17 https://doi.org/10.3390/ma14020236
28
T Marchment, J Sanjayan, M Xia. Method of enhancing interlayer bond strength in construction scale 3D printing with mortar by effective bond area amplification. Materials & Design, 2019, 169: 107684 https://doi.org/10.1016/j.matdes.2019.107684
29
L He, J Z M Tan, W T Chow, H Li, J Pan. Design of novel nozzles for higher interlayer strength of 3D printed cement paste. Additive Manufacturing, 2021, 48: 102452 https://doi.org/10.1016/j.addma.2021.102452
30
E Lloret-Fritschi, F Scotto, F Gramazio, M Kohler, K Graser, T Wangler, L Reiter, R J Flatt, J Mata-Falcón. Challenges of real-scale production with smart dynamic casting. RILEM Bookseries, 2019, 19: 299–310 https://doi.org/10.1007/978-3-319-99519-9_28
31
X Huang, W Yang, F Song, J Zou. Study on the mechanical properties of 3D printing concrete layers and the mechanism of influence of printing parameters. Construction and Building Materials, 2022, 335: 127496 https://doi.org/10.1016/j.conbuildmat.2022.127496
32
L He, W T Chow, H Li. Effects of interlayer notch and shear stress on interlayer strength of 3D printed cement paste. Additive Manufacturing, 2020, 36: 101390 https://doi.org/10.1016/j.addma.2020.101390
33
J van der Putten, M de Volder, P van den Heede, M Deprez, V Cnudde, G de Schutter, K van Tittelboom. Transport properties of 3D printed cementitious materials with prolonged time gap between successive layers. Cement and Concrete Research, 2022, 155: 106777 https://doi.org/10.1016/j.cemconres.2022.106777
34
Y W D Tay, J H Lim, M Li, M J Tan. Creating functionally graded concrete materials with varying 3D printing parameters. Virtual and Physical Prototyping, 2022, 17(3): 662–681 https://doi.org/10.1080/17452759.2022.2048521
35
IAAC. 3D printed bridge—Spain. 2016. Available at the website of The Institute for Advanced Architecture of Catalonia
36
G Hansemann, R Schmid, C Holzinger, J Tapley, H H Kim, V Sliskovic, B Freytag, A Trummer, S Peters. Additive fabrication of concrete elements by robots. Fabricate, 2020, 2020: 124–129 https://doi.org/10.2307/j.ctv13xpsvw.20
37
B KazadiL YaoL Wang. In-process reinforcement method for 3d concrete printing: status, potentials and challenges. In: Proceedings of International Conference on Green Building, Civil Engineering and Smart City. Singapore: Springer Nature Singapore, 2022, 394–402
38
W Tuvayanond, L Prasittisopin. Design for manufacture and assembly of digital fabrication and additive manufacturing in construction: a review. Buildings, 2023, 13(2): 429 https://doi.org/10.3390/buildings13020429
39
G Vantyghem, W de Corte, E Shakour, O Amir. 3D printing of a post-tensioned concrete girder designed by topology optimization. Automation in Construction, 2020, 112: 103084 https://doi.org/10.1016/j.autcon.2020.103084
40
A JipaF GiacomarraR Giesecke. 3D-printed formwork for bespoke concrete stairs: From computational design to digital fabrication. In: Proceedings of the 3rd Annual ACM Symposium on Computational Fabrication. Pennsylvania: SIGGRAPH. 2019, 1–12
41
TU/e. Nijmegen has the longest 3D-printed concrete bicycle bridge in the world. 2021. Available at the website of Eindhoven University of Technology
42
J Burry, J Sabin, B Sheil, M Skavara, W Xu, Y Gao, C Sun, Z Wang. Fabrication and application of 3D-printed concrete structural components in the Baoshan pedestrian bridge project. Fabricate, 2020, 2020: 140–147 https://doi.org/10.2307/j.ctv13xpsvw.22
43
S Raja, A J Rajan. A decision-making model for selection of the suitable FDM machine using fuzzy TOPSIS. Mathematical Problems in Engineering, 2022, 2022: 1–15 https://doi.org/10.1155/2022/7653292
44
V Chodha, R Dubey, R Kumar. Selection of industrial arc welding robot with TOPSIS and Entropy MCDM techniques. Materials Today: Proceedings, 2022, 50: 709–715
45
M Palanisamy, A Pugalendhi, R Ranganathan. Selection of suitable additive manufacturing machine and materials through best–worst method (BWM). International Journal of Advanced Manufacturing Technology, 2020, 107(5–6): 2345–2362 https://doi.org/10.1007/s00170-020-05110-6
46
R Agrawal. Sustainable material selection for additive manufacturing technologies: A critical analysis of rank reversal approach. Journal of Cleaner Production, 2021, 296: 126500 https://doi.org/10.1016/j.jclepro.2021.126500
47
V DohaleM AkarteS Gupta. Additive manufacturing process selection using MCDM. In: Proceedings of Advances in Mechanical Engineering: Select Proceedings of ICAME 2020. Singapore: Springer Singapore, 2020: 601–609
48
D Ren, J K Choi, K Schneider. A multicriteria decision-making method for additive manufacturing process selection. Rapid Prototyping Journal, 2022, 28(11): 77–91 https://doi.org/10.1108/RPJ-11-2021-0302
49
A I Yoris-Nobile, E Lizasoain-Arteaga, C J Slebi-Acevedo, E Blanco-Fernandez, S Alonso-Cañon, I Indacoechea-Vega, D Castro-Fresno. Life cycle assessment (LCA) and multi-criteria decision-making (MCDM) analysis to determine the performance of 3D printed cement mortars and geopolymers. Journal of Sustainable Cement-Based Materials, 2023, 12(5): 609–626 https://doi.org/10.1080/21650373.2022.2099479
50
S Chakraborty. Applications of the MOORA method for decision making in manufacturing environment. International Journal of Advanced Manufacturing Technology, 2011, 54(9–12): 1155–1166 https://doi.org/10.1007/s00170-010-2972-0
51
S Iranfar, M M Karbala, M H Shahsavari, V Vandeginste. Prioritization of habitat construction materials on Mars based on multi-criteria decision-making. Journal of Building Engineering, 2023, 66: 105864 https://doi.org/10.1016/j.jobe.2023.105864
52
P MiçZ F Antmen. A decision-making model based on TOPSIS, WASPAS, and MULTIMOORA methods for university location selection problem. Sage Open, 2021, 11(3): 21582440211040115
53
D Sabaei, J Erkoyuncu, R Roy. A review of multi-criteria decision making methods for enhanced maintenance delivery. Procedia CIRP, 2015, 37: 30–35
54
A B Doke, R B Zolekar, H Patel, S Das. Geospatial mapping of groundwater potential zones using multi-criteria decision-making AHP approach in a hardrock basaltic terrain in India. Ecological Indicators, 2021, 127: 107685 https://doi.org/10.1016/j.ecolind.2021.107685
55
M Giamalaki, T Tsoutsos. Sustainable siting of solar power installations in Mediterranean using a GIS/AHP approach. Renewable Energy, 2019, 141: 64–75 https://doi.org/10.1016/j.renene.2019.03.100
56
Y Du, Y Zheng, G Wu, Y Tang. Decision-making method of heavy-duty machine tool remanufacturing based on AHP-entropy weight and extension theory. Journal of Cleaner Production, 2020, 252: 119607 https://doi.org/10.1016/j.jclepro.2019.119607
57
Y W Du, K Gao. Ecological security evaluation of marine ranching with AHP-entropy-based TOPSIS: A case study of Yantai, China. Marine Policy, 2020, 122: 104223 https://doi.org/10.1016/j.marpol.2020.104223
58
D Y Zhao, Y Y Ma, H L Lin. Using the entropy and TOPSIS models to evaluate sustainable development of islands: A case in China. Sustainability, 2022, 14(6): 3707 https://doi.org/10.3390/su14063707
59
H L Lin, C C Cho, Y Y Ma, Y Q Hu, Z H Yang. Optimization plan for excess warehouse storage in e-commerce-based plant shops: A case study for Chinese plant industrial. Journal of Business Economics and Management, 2019, 20(5): 897–919 https://doi.org/10.3846/jbem.2019.10188
60
C L HwangK Yoon. Multiple Attribute Decision Making. Berlin: Springer Berlin Heidelberg, 1981
61
E K Zavadskas, Z Turskis, J Antucheviciene, A Zakarevicius. Optimization of weighted aggregated sum product assessment. Elektronika ir Elektrotechnika, 2012, 122(6): 3–6 https://doi.org/10.5755/j01.eee.122.6.1810
62
W K Brauers, E K Zavadskas. The MOORA method and its application to privatization in a transition economy. Control and Cybernetics, 2006, 35(2): 445–469
L Gebhard, J Mata-Falcón, A Anton, B Dillenburger, W Kaufmann. Structural behaviour of 3D printed concrete beams with various reinforcement strategies. Engineering Structures, 2021, 240: 112380 https://doi.org/10.1016/j.engstruct.2021.112380
66
L Gebhard, J Burger, J Mata-Falcón, Fritschi E Lloret, F Gramazio, M Kohler, W Kaufmann. Towards efficient concrete structures with ultra-thin 3D printed formwork: exploring reinforcement strategies and optimisation. Virtual and Physical Prototyping, 2022, 17(3): 599–616 https://doi.org/10.1080/17452759.2022.2041873
67
Y W D Tay, Y Qian, M J Tan. Printability region for 3D concrete printing using slump and slump flow test. Composites. Part B, Engineering, 2019, 174: 106968 https://doi.org/10.1016/j.compositesb.2019.106968
R Alfani, G L Guerrini. Rheological test methods for the characterization of extrudable cement-based materials—A review. Materials and Structures, 2005, 38: 239–247 https://doi.org/10.1617/14191
70
S K Kaliyavaradhan, P S Ambily, P R Prem, S B Ghodke. Test methods for 3D printable concrete. Automation in Construction, 2022, 142: 104529 https://doi.org/10.1016/j.autcon.2022.104529
71
B Khoshnevis. Automated construction by contour crafting—Related robotics and information technologies. Automation in Construction, 2004, 13(1): 5–19 https://doi.org/10.1016/j.autcon.2003.08.012
72
D Asprone, F Auricchio, C Menna, V Mercuri. 3D printing of reinforced concrete elements: Technology and design approach. Construction and Building Materials, 2018, 165: 218–231 https://doi.org/10.1016/j.conbuildmat.2018.01.018
73
A Anton, L Reiter, T Wangler, V Frangez, R J Flatt, B Dillenburger. A 3D concrete printing prefabrication platform for bespoke columns. Automation in Construction, 2021, 122: 103467 https://doi.org/10.1016/j.autcon.2020.103467
74
T P Tho, N T Thinh. Using a cable-driven parallel robot with applications in 3D concrete printing. Applied Sciences, 2021, 11(2): 1–24 https://doi.org/10.3390/app11020563
75
V Mechtcherine, V N Nerella, F Will, M Näther, J Otto, M Krause. Large-scale digital concrete construction—CONPrint3D concept for on-site, monolithic 3D-printing. Automation in Construction, 2019, 107: 102933 https://doi.org/10.1016/j.autcon.2019.102933
76
C Gosselin, R Duballet, P Roux, N Gaudillière, J Dirrenberger, P Morel. Large-scale 3D printing of ultra-high performance concrete—A new processing route for architects and builders. Materials & Design, 2016, 100: 102–109 https://doi.org/10.1016/j.matdes.2016.03.097
77
D Weger, C Gehlen, W Korte, F Meyer-Brötz, J Scheydt, T Stengel. Building rethought—3D concrete printing in building practice. Construction Robotics, 2021, 5(3–4): 203–210 https://doi.org/10.1007/s41693-022-00064-5
78
G Liu, J Zhao, Z Zhang, C Wang, Q Xu. Mechanical properties and microstructure of shotcrete under high temperature. Applied Sciences, 2021, 11(19): 9043 https://doi.org/10.3390/app11199043
79
F Heidarnezhad, Q Zhang. Shotcrete based 3D concrete printing: State of art, challenges, and opportunities. Construction and Building Materials, 2022, 323: 126545
80
H Lindemann, R Gerbers, S Ibrahim, F Dietrich, E Herrmann, K Dröder, A Raatz, H Kloft. Development of a shotcrete 3D-printing (SC3DP) technology for additive manufacturing of reinforced freeform concrete structures. RILEM Bookseries, 2019, 19: 287–298 https://doi.org/10.1007/978-3-319-99519-9_27
81
H Kloft, H W Krauss, N Hack, E Herrmann, S Neudecker, P A Varady, D Lowke. Influence of process parameters on the interlayer bond strength of concrete elements additive manufactured by Shotcrete 3D Printing (SC3DP). Cement and Concrete Research, 2020, 134: 106078 https://doi.org/10.1016/j.cemconres.2020.106078
82
E Lloret-Fritschi, T Wangler, L Gebhard, J Mata-Falcón, S Mantellato, F Scotto, J Burger, A Szabo, N Ruffray, L Reiter, F Boscaro, W Kaufmann, M Kohler, F Gramazio, R Flatt. From smart dynamic casting to a growing family of digital casting systems. Cement and Concrete Research, 2020, 134: 106071 https://doi.org/10.1016/j.cemconres.2020.106071
83
F ScottoE Lloret KristensenF GramazioM KohlerR J Flatt. Adaptive control system for smart dynamic casting. In: Proceedings of the 23rd International Conference of the Association for Computer-Aided Architectural Design Research in Asia (CAADRIA), Hong Kong: CAADRIA, 255–264
84
E Lloret, A R Shahab, M Linus, R J Flatt, F Gramazio, M Kohler, S Langenberg. Complex concrete structures: Merging existing casting techniques with digital fabrication. Computer Aided Design, 2015, 60: 40–49 https://doi.org/10.1016/j.cad.2014.02.011
85
E Lloret FritschiL ReiterT WanglerF GramazioM KohlerR J Flatt. Smart dynamic casting slipforming with flexible formwork—Inline measurement and control. In: Proceedings of the 23rd International Conference of the Association for Computer-Aided Architectural Design Research in Asia. Hong Kong: CAADRIA, 12–19
86
D Lowke, D Talke, I Dressler, D Weger, C Gehlen, C Ostertag, R Rael. Particle bed 3D printing by selective cement activation—Applications, material and process technology. Cement and Concrete Research, 2020, 134: 106077 https://doi.org/10.1016/j.cemconres.2020.106077
87
N Hack, K Dörfler, A N Walzer, T Wangler, J Mata-Falcón, N Kumar, J Buchli, W Kaufmann, R J Flatt, F Gramazio. et al.. Structural stay-in-place formwork for robotic in situ fabrication of non-standard concrete structures: A real scale architectural demonstrator. Automation in Construction, 2020, 115: 103197 https://doi.org/10.1016/j.autcon.2020.103197
88
N Hack, I Dressler, L Brohmann, S Gantner, D Lowke, H Kloft. Injection 3D concrete printing (I3DCP): Basic principles and case studies. Materials, 2020, 13(5): 1093 https://doi.org/10.3390/ma13051093
89
D Lowke, A Vandenberg, A Pierre, A Thomas, H Kloft, N Hack. Injection 3D concrete printing in a carrier liquid—Underlying physics and applications to lightweight space frame structures. Cement and Concrete Composites, 2021, 124: 104169 https://doi.org/10.1016/j.cemconcomp.2021.104169
90
H KwonM EichenhoferT Kyttas. Digital composites: Robotic 3D printing of continuous carbon fiber-reinforced plastics for functionally-graded building components. In: Proceedings of Robotic Fabrication in Architecture, Art and Design 2018. Zurich: Springer International Publishing, 2019, 363–376
91
A JipaM BernhardP B Dillenburger. Submillimetre formwork. In: Proceedings of TxA Emerging Design + Technology Conference. Austin, TX: Texas Society of Architects, 2017
92
S Neudecker, C Bruns, R Gerbers, J Heyn, F Dietrich, K Dröder, A Raatz, H Kloft. A new robotic spray technology for generative manufacturing of complex concrete structures without formwork. Procedia CIRP, 2016, 43: 333–338 https://doi.org/10.1016/j.procir.2016.02.107
93
T Daungwilailuk, P Pheinsusom, W Pansuk. Uniaxial load testing of large-scale 3D-printed concrete wall and finite-element model analysis. Construction and Building Materials, 2021, 275: 122039 https://doi.org/10.1016/j.conbuildmat.2020.122039
94
H Kloft, N Hack, J Mainka, L Brohmann, E Herrmann, L Ledderose, D Lowke. Additive fertigung im bauwesen: Erste 3-D-gedruckte und bewehrte Betonbauteile im Shotcrete-3-D-Printing-Verfahren (SC3DP). Bautechnik, 2019, 96(12): 929–938 https://doi.org/10.1002/bate.201900094
95
B Utela, D Storti, R Anderson, M Ganter. A review of process development steps for new material systems in three dimensional printing (3DP). Journal of Manufacturing Processes, 2008, 10(2): 96–104 https://doi.org/10.1016/j.jmapro.2009.03.002
96
K Markus. Solar Sinter. 2022. Available at the website of Kayser Works
97
S A O O Nair, H Alghamdi, A Arora, I Mehdipour, G Sant, N Neithalath. Linking fresh paste microstructure, rheology and extrusion characteristics of cementitious binders for 3D printing. Journal of the American Ceramic Society, 2019, 102(7): 3951–3964 https://doi.org/10.1111/jace.16305
98
M Kafara, J Kemnitzer, H H Westermann, R Steinhilper. Influence of binder quantity on dimensional accuracy and resilience in 3D-printing. Procedia Manufacturing, 2018, 21: 638–646 https://doi.org/10.1016/j.promfg.2018.02.166
99
S A Nair, S Panda, M Santhanam, G Sant, N Neithalath. A critical examination of the influence of material characteristics and extruder geometry on 3D printing of cementitious binders. Cement and Concrete Composites, 2020, 112: 103671 https://doi.org/10.1016/j.cemconcomp.2020.103671
100
M Xia, B Nematollahi, J Sanjayan. Influence of binder saturation level on compressive strength and dimensional accuracy of powder-based 3D printed geopolymer. Materials Science Forum, 2018, 939: 177–183 https://doi.org/10.4028/www.scientific.net/MSF.939.177
101
A R Arunothayan, B Nematollahi, R Ranade, S H Bong, J Sanjayan. Development of 3D-printable ultra-high performance fiber-reinforced concrete for digital construction. Construction and Building Materials, 2020, 257: 119546 https://doi.org/10.1016/j.conbuildmat.2020.119546
L Reiter, T Wangler, A Anton, R J Flatt. Setting on demand for digital concrete—Principles, measurements, chemistry, validation. Cement and Concrete Research, 2020, 132: 106047 https://doi.org/10.1016/j.cemconres.2020.106047
104
A AntonP BedarfA YooA DillenburgerB ReiterL WanglerT FlattJ Robert. Concrete choreography: Prefabrication of 3D-printed columns. Fabricate 2020: Making Resilient Architecture, 2020: 286–293
105
J Raigar, V S Sharma, S Srivastava, R Chand, J Singh. A decision support system for the selection of an additive manufacturing process using a new hybrid MCDM technique. Sādhanā, 2020, 45: 1–14 https://doi.org/10.1007/s12046-020-01338-w
106
S K Mangla, P Kumar, M K Barua. Risk analysis in green supply chain using fuzzy AHP approach: A case study. Resources, Conservation and Recycling, 2015, 104: 375–390 https://doi.org/10.1016/j.resconrec.2015.01.001