{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,16]],"date-time":"2026-01-16T02:37:05Z","timestamp":1768531025418,"version":"3.49.0"},"reference-count":35,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2021,3,22]],"date-time":"2021-03-22T00:00:00Z","timestamp":1616371200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>A concept of concrete\u2013plastic columns was presented in the paper. As a proof of concept, a research program was conducted. Seven different cross-sections of columns formwork were 3D printed using plastic. The cross-sections represented three types of columns\u2019 shapes: most common, rare, and impossible to be realized using traditional formworks (based on fractals). Prepared plastic formworks were filled with cement mortar playing the role of ordinary concrete. After 28 days of curing, the load\u2013strain characteristics of all the concrete columns were tested. Achieved results were discussed. It was proven that concrete\u2013plastic columns were characterized by quasi-plastic behavior while being ultimately destroyed. Columns with fractal-based cross-sections sustained the largest strains while maintaining a significant part of the maximum load. The achieved results proved that it is possible to completely omit traditional steel rebar-stirrup reinforcement. The future direction of needed research should cover larger columns and other concrete\u2013plastic elements. Using fiber-reinforced concrete for the creation of concrete\u2013plastic elements should be also tested.<\/jats:p>","DOI":"10.3390\/ma14061565","type":"journal-article","created":{"date-parts":[[2021,3,22]],"date-time":"2021-03-22T12:55:07Z","timestamp":1616417707000},"page":"1565","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Concept of Using 3D Printing for Production of Concrete\u2013Plastic Columns with Unconventional Cross-Sections"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4049-5330","authenticated-orcid":false,"given":"Jacek","family":"Katzer","sequence":"first","affiliation":[{"name":"Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-720 Olsztyn, Poland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9000-3237","authenticated-orcid":false,"given":"Aneta","family":"Skoratko","sequence":"additional","affiliation":[{"name":"Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-720 Olsztyn, Poland"}]}],"member":"1968","published-online":{"date-parts":[[2021,3,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"496","DOI":"10.1016\/j.mattod.2013.11.017","article-title":"Bone tissue engineering using 3D printing","volume":"16","author":"Bose","year":"2013","journal-title":"Mater. Today"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"947","DOI":"10.1016\/j.jmatprotec.2012.12.015","article-title":"Surface modification of fused deposition modeling ABS to enable rapid prototyping of biomedical microdevices","volume":"213","author":"McCullough","year":"2013","journal-title":"J. Mater. Process. Technol."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"155","DOI":"10.1016\/j.bushor.2011.11.003","article-title":"3-D printing: The new industrial revolution","volume":"55","author":"Berman","year":"2012","journal-title":"Bus. Horiz."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"525","DOI":"10.1016\/S0007-8506(07)63240-5","article-title":"Progress in Additive Manufacturing and Rapid Prototyping","volume":"47","author":"Kruth","year":"1998","journal-title":"CIRP Ann."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1","DOI":"10.5402\/2012\/208760","article-title":"A Review of Additive Manufacturing","volume":"2012","author":"Wong","year":"2012","journal-title":"ISRN Mech. Eng."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Katzer, J., and Szatkiewicz, T. (2020). Effect of 3D Printed Spatial Reinforcement on Flexural Characteristics of Conventional Mortar. Materials, 13.","DOI":"10.3390\/ma13143133"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"17","DOI":"10.21809\/rilemtechlett.2020.113","article-title":"Use of 3D printing to create multifunctional cementitious composites: Review, challenges and opportunities","volume":"5","author":"Savija","year":"2020","journal-title":"RILEM Tech. Lett."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"430","DOI":"10.1016\/j.actaastro.2013.07.034","article-title":"Building components for an outpost on the Lunar soil by means of a novel 3D printing technology","volume":"93","author":"Cesaretti","year":"2014","journal-title":"Acta Astronaut."},{"key":"ref_9","unstructured":"Government of India, Ministry of Railways (2017). Report on Modern Formwork Systems, Research Design and Standards Organization. Report no.: RDSO\/WKS\/2017\/1."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"157","DOI":"10.1016\/j.conbuildmat.2019.03.204","article-title":"Properties of concrete elements with 3-D printed formworks which substitute steel reinforcement","volume":"210","author":"Katzer","year":"2019","journal-title":"Constr. Build. Mater."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"398","DOI":"10.1016\/j.conbuildmat.2017.02.037","article-title":"Modified 3D printed powder to cement-based material and mechanical properties of cement scaffold used in 3D printing","volume":"138","author":"Shakor","year":"2017","journal-title":"Constr. Build. Mater."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"172","DOI":"10.1016\/j.compositesb.2018.02.012","article-title":"Additive manufacturing (3D printing): A review of materials, methods, applications and challenges","volume":"143","author":"Ngo","year":"2018","journal-title":"Compos. Part B Eng."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"90","DOI":"10.1016\/j.jclepro.2014.02.009","article-title":"Life cycle analysis of distributed recycling of post-consumer high density polyethylene for 3-D printing filament","volume":"70","author":"Kreiger","year":"2014","journal-title":"J. Clean. Prod."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"292","DOI":"10.1016\/j.proeng.2016.07.357","article-title":"3D Printing of Buildings and Building Components as the Future of Sustainable Construction?","volume":"151","author":"Hager","year":"2016","journal-title":"Procedia Eng."},{"key":"ref_15","unstructured":"(2021, March 10). EN 196-1 Chapter13. Cement\u2014Determination of Strength. Building Materials 10\u2014Testing Methods. Available online: https:\/\/k123.fsv.cvut.cz\/media\/subjects\/files\/123BM01\/chapter-13.pdf."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"884","DOI":"10.1016\/j.conbuildmat.2012.04.050","article-title":"Median diameter as a grading characteristic for fine aggregate cement composite designing","volume":"35","author":"Katzer","year":"2012","journal-title":"Constr. Build. Mater."},{"key":"ref_17","unstructured":"(2021, March 10). BSI, BS EN 197-1. Cement. Part 1: Composition, Specifications and Conformity Criteria for Common Cements. Available online: https:\/\/infostore.saiglobal.com\/preview\/is\/en\/2011\/i.s.en197-1-2011.pdf?sku=1492629."},{"key":"ref_18","unstructured":"(2021, March 10). BS EN 934-2:2009+A1:2012 Admixtures for Concrete, Mortar and Grout. Concrete Admixtures. Definitions, Requirements, Conformity, Marking and Labelling. Available online: https:\/\/shop.bsigroup.com\/ProductDetail?pid=000000000030234820."},{"key":"ref_19","unstructured":"(2021, March 10). UNE EN 1015-3:2000\/A2:2007 Methods of Test for Mortar for Masonry\u2014Part 3: Determination of Consistence of Fresh Mortar (by Flow Table). Available online: https:\/\/www.en-standard.eu\/une-en-1015-3-2000\/a2-2007-methods-of-test-for-mortar-for-masonry-part-3-determination-of-consistence-of-fresh-mortar-by-flow-table\/."},{"key":"ref_20","unstructured":"(2021, March 10). PN EN 12390-6 Testing Hardened Concrete. Tensile Splitting Strength of Test Specimens. Available online: https:\/\/shop.bsigroup.com\/ProductDetail\/?pid=000000000030200045."},{"key":"ref_21","unstructured":"ASTM (2017). ASTM C496\/C496M-17 Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens, American Society for Testing and Materials."},{"key":"ref_22","unstructured":"ASTM C597 (2016). Standard Test Method for Pulse Velocity Through Concrete, American Society for Testing and Materials."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"247","DOI":"10.1016\/j.conbuildmat.2016.02.205","article-title":"A blurred border between ordinary concrete and SFRC","volume":"112","author":"Domski","year":"2016","journal-title":"Constr. Build. Mater."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1664","DOI":"10.1016\/j.conbuildmat.2010.02.025","article-title":"Flowability of fibre-reinforced concrete and its effect on the mechanical properties of the material","volume":"24","author":"Boulekbache","year":"2010","journal-title":"Constr. Build. Mater."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"119","DOI":"10.1515\/jmbm-2019-0014","article-title":"Mechanical properties of steel and polymer fiber reinforced concrete","volume":"28","author":"Babaie","year":"2019","journal-title":"J. Mech. Behav. Mater."},{"key":"ref_26","unstructured":"NF EN 14651+A1 (2012). Test Method for Metallic Fibre Concrete\u2014Measureing the Flexural Tensile Strength (Limit of Proportionality (LOP), Residual), British Standards Institute."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"4122","DOI":"10.1016\/j.matdes.2011.03.030","article-title":"Recent trends in steel fibered high-strength concrete","volume":"32","author":"Shah","year":"2011","journal-title":"Mater. Des."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"137","DOI":"10.1016\/j.cemconcomp.2017.12.010","article-title":"Effects of stirrup, steel fiber, and beam size on shear behavior of high-strength concrete beams","volume":"87","author":"Yoo","year":"2018","journal-title":"Cem. Concr. Compos."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"107","DOI":"10.1016\/j.engstruct.2010.09.023","article-title":"The composite effect of steel fibres and stirrups on the shear behaviour of beams using self-consolidating concrete","volume":"33","author":"Ding","year":"2011","journal-title":"Eng. Struct."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"669","DOI":"10.1016\/j.conbuildmat.2004.04.027","article-title":"Mechanical properties of high-strength steel fiber-reinforced concrete","volume":"18","author":"Song","year":"2004","journal-title":"Constr. Build. Mater."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"101","DOI":"10.1016\/j.wasman.2020.09.029","article-title":"Plastic waste from marine environment: Demonstration of possible routes for recycling by different manufacturing technologies","volume":"119","author":"Ronkay","year":"2021","journal-title":"Waste Manag."},{"key":"ref_32","doi-asserted-by":"crossref","unstructured":"Woern, A.L., McCaslin, J.R., Pringle, A.M., and Pearce, J.M. (2018). RepRapable Recyclebot: Open source 3-D printable extruder for converting plastic to 3-D printing filament. HardwareX, 4.","DOI":"10.1016\/j.ohx.2018.e00026"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"48","DOI":"10.1016\/j.resconrec.2017.09.023","article-title":"Tightening the loop on the circular economy: Coupled distributed recycling and manufacturing with recyclebot and RepRap 3-D printing","volume":"128","author":"Zhong","year":"2018","journal-title":"Resour. Conserv. Recycl."},{"key":"ref_34","first-page":"776","article-title":"About the Use of Recycled or Biodegradable Filaments for Sustainability of 3D Printing","volume":"68","author":"Pakkanen","year":"2017","journal-title":"Crisis Manag. Softw. Dev. Knowl. Transf."},{"key":"ref_35","first-page":"174","article-title":"Recycled polyethylene terephthalate as a new FFF feedstock material","volume":"21","author":"Zander","year":"2018","journal-title":"Addit. Manuf."}],"container-title":["Materials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1944\/14\/6\/1565\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T05:39:24Z","timestamp":1760161164000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1944\/14\/6\/1565"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,3,22]]},"references-count":35,"journal-issue":{"issue":"6","published-online":{"date-parts":[[2021,3]]}},"alternative-id":["ma14061565"],"URL":"https:\/\/doi.org\/10.3390\/ma14061565","relation":{},"ISSN":["1996-1944"],"issn-type":[{"value":"1996-1944","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,3,22]]}}}