Mechanical Performance of Commercially Available Premix UHPC-Based 3D Printable Concrete
Several recent studies have attempted to formulate printable cementitious materials to meet the printing requirements, but these materials are designed to work with specific printing equipment and printing configurations. This paper aims to systematically develop and perform characterization of a co...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/18/6326 |
| _version_ | 1797485347797467136 |
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| author | Carolina Medicis Sergio Gonzalez Yezid A. Alvarado Hermes A. Vacca Ivan F. Mondragon Rodolfo García Giovanni Hernandez |
| author_facet | Carolina Medicis Sergio Gonzalez Yezid A. Alvarado Hermes A. Vacca Ivan F. Mondragon Rodolfo García Giovanni Hernandez |
| author_sort | Carolina Medicis |
| collection | DOAJ |
| description | Several recent studies have attempted to formulate printable cementitious materials to meet the printing requirements, but these materials are designed to work with specific printing equipment and printing configurations. This paper aims to systematically develop and perform characterization of a commercially available ultra-high-performance concrete-class material (UHPC) modified to be printable. Four percentages of superplasticizer were used (100%, 94%, 88%, 82%) to adjust the UHPC mixture for 3D-printing requirements. A superplasticizer amount of 88% was considered adequate to meet the requirements. Several fresh and hardened properties of UHPC were measured experimentally: shape-retention ability and green strength were investigated in fresh state, and compressive and flexural strength were evaluated in three loading directions to evaluate the anisotropic effects. Furthermore, the strength of the interlayer bond was investigated. The UHPC developed in this study met the criteria for extrudability, buildability, and shape retention to ensure printability. In comparison with mold-cast UHPC, printed UHPC exhibited superior flexural performance (15–18%), but reduced compressive strength (32–56%). Finally, the results demonstrated that a commercially available UHPC-class material can be used for 3DCP, which possesses all necessary properties, both fresh and hardened. |
| first_indexed | 2024-03-09T23:18:25Z |
| format | Article |
| id | doaj.art-4b0536a7b6a84a799a647e4ac17b6b69 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T23:18:25Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-4b0536a7b6a84a799a647e4ac17b6b692023-11-23T17:31:42ZengMDPI AGMaterials1996-19442022-09-011518632610.3390/ma15186326Mechanical Performance of Commercially Available Premix UHPC-Based 3D Printable ConcreteCarolina Medicis0Sergio Gonzalez1Yezid A. Alvarado2Hermes A. Vacca3Ivan F. Mondragon4Rodolfo García5Giovanni Hernandez6School of Engineering, Pontificia Universidad Javeriana, Bogotá 110231, ColombiaSchool of Engineering, Pontificia Universidad Javeriana, Bogotá 110231, ColombiaSchool of Engineering, Pontificia Universidad Javeriana, Bogotá 110231, ColombiaSchool of Engineering, Pontificia Universidad Javeriana, Bogotá 110231, ColombiaSchool of Engineering, Pontificia Universidad Javeriana, Bogotá 110231, ColombiaEnel Colombia, Bogotá 110221, ColombiaEnel Colombia, Bogotá 110221, ColombiaSeveral recent studies have attempted to formulate printable cementitious materials to meet the printing requirements, but these materials are designed to work with specific printing equipment and printing configurations. This paper aims to systematically develop and perform characterization of a commercially available ultra-high-performance concrete-class material (UHPC) modified to be printable. Four percentages of superplasticizer were used (100%, 94%, 88%, 82%) to adjust the UHPC mixture for 3D-printing requirements. A superplasticizer amount of 88% was considered adequate to meet the requirements. Several fresh and hardened properties of UHPC were measured experimentally: shape-retention ability and green strength were investigated in fresh state, and compressive and flexural strength were evaluated in three loading directions to evaluate the anisotropic effects. Furthermore, the strength of the interlayer bond was investigated. The UHPC developed in this study met the criteria for extrudability, buildability, and shape retention to ensure printability. In comparison with mold-cast UHPC, printed UHPC exhibited superior flexural performance (15–18%), but reduced compressive strength (32–56%). Finally, the results demonstrated that a commercially available UHPC-class material can be used for 3DCP, which possesses all necessary properties, both fresh and hardened.https://www.mdpi.com/1996-1944/15/18/63263D concrete printingUHPCanisotropymechanical properties |
| spellingShingle | Carolina Medicis Sergio Gonzalez Yezid A. Alvarado Hermes A. Vacca Ivan F. Mondragon Rodolfo García Giovanni Hernandez Mechanical Performance of Commercially Available Premix UHPC-Based 3D Printable Concrete Materials 3D concrete printing UHPC anisotropy mechanical properties |
| title | Mechanical Performance of Commercially Available Premix UHPC-Based 3D Printable Concrete |
| title_full | Mechanical Performance of Commercially Available Premix UHPC-Based 3D Printable Concrete |
| title_fullStr | Mechanical Performance of Commercially Available Premix UHPC-Based 3D Printable Concrete |
| title_full_unstemmed | Mechanical Performance of Commercially Available Premix UHPC-Based 3D Printable Concrete |
| title_short | Mechanical Performance of Commercially Available Premix UHPC-Based 3D Printable Concrete |
| title_sort | mechanical performance of commercially available premix uhpc based 3d printable concrete |
| topic | 3D concrete printing UHPC anisotropy mechanical properties |
| url | https://www.mdpi.com/1996-1944/15/18/6326 |
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