Selective Alkali Activation of Limestone for Additive Manufacturing in Construction: Influence of Alkali Concentration on Physical and Mechanical Properties
Alkali-activated binders are gaining importance in the construction industry because of their environmental and mechanical advantages. This paper focuses on selective limestone activation (SLA) using aqueous sodium hydroxide solutions to be used as a non-hydraulic binder material. This study investi...
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MDPI AG
2025-04-01
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| author | Mursaleen Shahid Alexandre Pierre Annelise Cousture Vincenzo M. Sglavo |
| author_facet | Mursaleen Shahid Alexandre Pierre Annelise Cousture Vincenzo M. Sglavo |
| author_sort | Mursaleen Shahid |
| collection | DOAJ |
| description | Alkali-activated binders are gaining importance in the construction industry because of their environmental and mechanical advantages. This paper focuses on selective limestone activation (SLA) using aqueous sodium hydroxide solutions to be used as a non-hydraulic binder material. This study investigates the mechanical performance of 3D-printed specimens cured at 45 °C produced with different NaOH concentrations. Varying the NaOH concentration is significant for analyzing its role in optimizing the reactivity and mechanical behavior for additive manufacturing applications. The results show that mechanical strength and physical properties are influenced by the NaOH concentration, with the strength decreasing at higher sodium hydroxide loads. Although porosity and density are consistent in all concentrations, microstructure examination showed non-homogeneous grainy texture. |
| format | Article |
| id | doaj-art-c7c743191dca4946b3daf7c99f1836e0 |
| institution | DOAJ |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-c7c743191dca4946b3daf7c99f1836e02025-08-20T03:14:16ZengMDPI AGApplied Sciences2076-34172025-04-01158445310.3390/app15084453Selective Alkali Activation of Limestone for Additive Manufacturing in Construction: Influence of Alkali Concentration on Physical and Mechanical PropertiesMursaleen Shahid0Alexandre Pierre1Annelise Cousture2Vincenzo M. Sglavo3Department of Industrial Engineering, University of Trento, 38123 Trento, ItalyLaboratoire de Mécanique et Matériaux du Génie Civil, CY Cergy Paris Université, F-95000 Cergy, FranceLaboratoire de Mécanique et Matériaux du Génie Civil, CY Cergy Paris Université, F-95000 Cergy, FranceDepartment of Industrial Engineering, University of Trento, 38123 Trento, ItalyAlkali-activated binders are gaining importance in the construction industry because of their environmental and mechanical advantages. This paper focuses on selective limestone activation (SLA) using aqueous sodium hydroxide solutions to be used as a non-hydraulic binder material. This study investigates the mechanical performance of 3D-printed specimens cured at 45 °C produced with different NaOH concentrations. Varying the NaOH concentration is significant for analyzing its role in optimizing the reactivity and mechanical behavior for additive manufacturing applications. The results show that mechanical strength and physical properties are influenced by the NaOH concentration, with the strength decreasing at higher sodium hydroxide loads. Although porosity and density are consistent in all concentrations, microstructure examination showed non-homogeneous grainy texture.https://www.mdpi.com/2076-3417/15/8/44533D printinglimestonemechanical propertiesselective limestone activationNaOH concentrations |
| spellingShingle | Mursaleen Shahid Alexandre Pierre Annelise Cousture Vincenzo M. Sglavo Selective Alkali Activation of Limestone for Additive Manufacturing in Construction: Influence of Alkali Concentration on Physical and Mechanical Properties Applied Sciences 3D printing limestone mechanical properties selective limestone activation NaOH concentrations |
| title | Selective Alkali Activation of Limestone for Additive Manufacturing in Construction: Influence of Alkali Concentration on Physical and Mechanical Properties |
| title_full | Selective Alkali Activation of Limestone for Additive Manufacturing in Construction: Influence of Alkali Concentration on Physical and Mechanical Properties |
| title_fullStr | Selective Alkali Activation of Limestone for Additive Manufacturing in Construction: Influence of Alkali Concentration on Physical and Mechanical Properties |
| title_full_unstemmed | Selective Alkali Activation of Limestone for Additive Manufacturing in Construction: Influence of Alkali Concentration on Physical and Mechanical Properties |
| title_short | Selective Alkali Activation of Limestone for Additive Manufacturing in Construction: Influence of Alkali Concentration on Physical and Mechanical Properties |
| title_sort | selective alkali activation of limestone for additive manufacturing in construction influence of alkali concentration on physical and mechanical properties |
| topic | 3D printing limestone mechanical properties selective limestone activation NaOH concentrations |
| url | https://www.mdpi.com/2076-3417/15/8/4453 |
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