Evaluation of Workability and Structuration Rate of Locally Developed 3D Printing Concrete Using Conventional Methods
Concrete 3D printing is a novel construction method that can bring new horizons to the construction industry. However, there are still many challenges that limit its capabilities. Despite the huge research efforts, to date, there are still no standardized acceptance criteria and guidelines for the e...
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2022
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| Online Access: | https://hdl.handle.net/11073/26240 |
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| _version_ | 1864513439281446912 |
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| author | Ahmed, Sara |
| author2 | Yehia, Sherif |
| author2_role | author |
| author_facet | Ahmed, Sara Yehia, Sherif |
| author_role | author |
| dc.creator.none.fl_str_mv | Ahmed, Sara Yehia, Sherif |
| dc.date.none.fl_str_mv | 2022-02-08 2025-07-30T09:17:55Z 2025-07-30T09:17:55Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | Ahmed, S., & Yehia, S. (2022). Evaluation of Workability and Structuration Rate of Locally Developed 3D Printing Concrete Using Conventional Methods. Materials, 15(3), 1243. https://doi.org/10.3390/ma15031243 1996-1944 https://hdl.handle.net/11073/26240 10.3390/ma15031243 |
| dc.language.none.fl_str_mv | en |
| dc.publisher.none.fl_str_mv | MDPI |
| dc.relation.none.fl_str_mv | https://doi.org/10.3390/ma15031243 |
| dc.rights.none.fl_str_mv | Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
| dc.subject.none.fl_str_mv | 3D printing Workability Structuration rate Buildability Aggregate-to-binder ratio Compressive strength |
| dc.title.none.fl_str_mv | Evaluation of Workability and Structuration Rate of Locally Developed 3D Printing Concrete Using Conventional Methods |
| dc.type.none.fl_str_mv | Peer-Reviewed Published version info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | Concrete 3D printing is a novel construction method that can bring new horizons to the construction industry. However, there are still many challenges that limit its capabilities. Despite the huge research efforts, to date, there are still no standardized acceptance criteria and guidelines for the evaluation of printing concrete. Therefore, the main objective of this research was to develop 3D printing mixes with different aggregate-to-binder (a/b) ratios (1.2, 1.5, and 1.8) and evaluate it in terms of its fresh printing properties, which include the workability, extrudability, setting time, open time, and buildability. The compressive strengths of cast and printed specimens were also tested to determine the effect of the layering process. The workability was evaluated using commonly used devices in the construction industry (slump and flow table test) and was monitored over time along with the penetration test to indicate the structuration rate of concrete. From the experimental results and observations, the flow test resulted in the best indication of the structuration rate (thixotropy) of concrete, followed by the penetration and slump tests. The a/b ratio affected all the investigated properties of the printing concrete. Higher a/b ratios resulted in increased structuration rate, buildability, and compressive strength of cast specimens. However, for printed specimens, the compressive strength decreased with the increase in a/b ratio due to increased thixotropy. Therefore, from the results of the present investigation, it can be concluded that high a/b ratios (>1.5) are not desirable for printing concrete. |
| format | article |
| id | aus_7ffb8b09568593fc4adf6b279344a651 |
| identifier_str_mv | Ahmed, S., & Yehia, S. (2022). Evaluation of Workability and Structuration Rate of Locally Developed 3D Printing Concrete Using Conventional Methods. Materials, 15(3), 1243. https://doi.org/10.3390/ma15031243 1996-1944 10.3390/ma15031243 |
| language_invalid_str_mv | en |
| network_acronym_str | aus |
| network_name_str | aus |
| oai_identifier_str | oai:repository.aus.edu:11073/26240 |
| publishDate | 2022 |
| publisher.none.fl_str_mv | MDPI |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
| spelling | Evaluation of Workability and Structuration Rate of Locally Developed 3D Printing Concrete Using Conventional MethodsAhmed, SaraYehia, Sherif3D printingWorkabilityStructuration rateBuildabilityAggregate-to-binder ratioCompressive strengthConcrete 3D printing is a novel construction method that can bring new horizons to the construction industry. However, there are still many challenges that limit its capabilities. Despite the huge research efforts, to date, there are still no standardized acceptance criteria and guidelines for the evaluation of printing concrete. Therefore, the main objective of this research was to develop 3D printing mixes with different aggregate-to-binder (a/b) ratios (1.2, 1.5, and 1.8) and evaluate it in terms of its fresh printing properties, which include the workability, extrudability, setting time, open time, and buildability. The compressive strengths of cast and printed specimens were also tested to determine the effect of the layering process. The workability was evaluated using commonly used devices in the construction industry (slump and flow table test) and was monitored over time along with the penetration test to indicate the structuration rate of concrete. From the experimental results and observations, the flow test resulted in the best indication of the structuration rate (thixotropy) of concrete, followed by the penetration and slump tests. The a/b ratio affected all the investigated properties of the printing concrete. Higher a/b ratios resulted in increased structuration rate, buildability, and compressive strength of cast specimens. However, for printed specimens, the compressive strength decreased with the increase in a/b ratio due to increased thixotropy. Therefore, from the results of the present investigation, it can be concluded that high a/b ratios (>1.5) are not desirable for printing concrete.Civil Engineering Department at the American University of SharjahMDPI2025-07-30T09:17:55Z2025-07-30T09:17:55Z2022-02-08Peer-ReviewedPublished versioninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfAhmed, S., & Yehia, S. (2022). Evaluation of Workability and Structuration Rate of Locally Developed 3D Printing Concrete Using Conventional Methods. Materials, 15(3), 1243. https://doi.org/10.3390/ma150312431996-1944https://hdl.handle.net/11073/2624010.3390/ma15031243enhttps://doi.org/10.3390/ma15031243Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/oai:repository.aus.edu:11073/262402025-07-31T14:52:58Z |
| spellingShingle | Evaluation of Workability and Structuration Rate of Locally Developed 3D Printing Concrete Using Conventional Methods Ahmed, Sara 3D printing Workability Structuration rate Buildability Aggregate-to-binder ratio Compressive strength |
| status_str | publishedVersion |
| title | Evaluation of Workability and Structuration Rate of Locally Developed 3D Printing Concrete Using Conventional Methods |
| title_full | Evaluation of Workability and Structuration Rate of Locally Developed 3D Printing Concrete Using Conventional Methods |
| title_fullStr | Evaluation of Workability and Structuration Rate of Locally Developed 3D Printing Concrete Using Conventional Methods |
| title_full_unstemmed | Evaluation of Workability and Structuration Rate of Locally Developed 3D Printing Concrete Using Conventional Methods |
| title_short | Evaluation of Workability and Structuration Rate of Locally Developed 3D Printing Concrete Using Conventional Methods |
| title_sort | Evaluation of Workability and Structuration Rate of Locally Developed 3D Printing Concrete Using Conventional Methods |
| topic | 3D printing Workability Structuration rate Buildability Aggregate-to-binder ratio Compressive strength |
| url | https://hdl.handle.net/11073/26240 |