Novel 3D Printing Phase Change Aggregate Concrete: Mechanical and Thermal Properties Analysis
The use of phase change materials (PCMs) in concrete is a double-edged sword that improves the thermal inertia but degrades the mechanical properties of concrete. It has been an essential but unsolved issue to enhance the thermal capacity of PCMs while non-decreasing their mechanical strength. To th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/23/8393 |
| _version_ | 1797462899260653568 |
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| author | Jinyang Jiang Chaolang Zheng Fengjuan Wang Wenxiang Xu Liguo Wang Zhaoyi Chen Wei Su |
| author_facet | Jinyang Jiang Chaolang Zheng Fengjuan Wang Wenxiang Xu Liguo Wang Zhaoyi Chen Wei Su |
| author_sort | Jinyang Jiang |
| collection | DOAJ |
| description | The use of phase change materials (PCMs) in concrete is a double-edged sword that improves the thermal inertia but degrades the mechanical properties of concrete. It has been an essential but unsolved issue to enhance the thermal capacity of PCMs while non-decreasing their mechanical strength. To this end, this work designs a novel 3D printing phase change aggregate to prepare concrete with prominent thermal capacity and ductility. The work investigated the effects of 3D printing phase change aggregate on the compressive strength and splitting tensile strength of concrete. The compressive strength of phase change aggregate concrete is 21.18 MPa, but the ductility of concrete improves. The splitting tensile strength was 1.45 MPa. The peak strain is 11.69 × 10<sup>−3</sup>, nearly 13 times that of basalt aggregate concrete. Moreover, using 3D printing phase change aggregate reduced concrete’s early peak hydration temperature by 7.1%. The thermal insulation capacity of the experiment cube model with phase change concrete has been improved. The results show that the novel 3D printing change aggregate concrete has good mechanical properties and latent heat storage, providing a guideline for applying PCMs in building materials. |
| first_indexed | 2024-03-09T17:43:04Z |
| format | Article |
| id | doaj.art-e9ef06203da2494dab3ca7f33cf632fb |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T17:43:04Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-e9ef06203da2494dab3ca7f33cf632fb2023-11-24T11:27:27ZengMDPI AGMaterials1996-19442022-11-011523839310.3390/ma15238393Novel 3D Printing Phase Change Aggregate Concrete: Mechanical and Thermal Properties AnalysisJinyang Jiang0Chaolang Zheng1Fengjuan Wang2Wenxiang Xu3Liguo Wang4Zhaoyi Chen5Wei Su6School of Material Science and Engineering, Southeast University, Nanjing 211189, ChinaSchool of Material Science and Engineering, Southeast University, Nanjing 211189, ChinaSchool of Material Science and Engineering, Southeast University, Nanjing 211189, ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaSchool of Material Science and Engineering, Southeast University, Nanjing 211189, ChinaChina Railway Design Corporation, Binhai New Area, Tianjin 300308, ChinaChina Railway Design Corporation, Binhai New Area, Tianjin 300308, ChinaThe use of phase change materials (PCMs) in concrete is a double-edged sword that improves the thermal inertia but degrades the mechanical properties of concrete. It has been an essential but unsolved issue to enhance the thermal capacity of PCMs while non-decreasing their mechanical strength. To this end, this work designs a novel 3D printing phase change aggregate to prepare concrete with prominent thermal capacity and ductility. The work investigated the effects of 3D printing phase change aggregate on the compressive strength and splitting tensile strength of concrete. The compressive strength of phase change aggregate concrete is 21.18 MPa, but the ductility of concrete improves. The splitting tensile strength was 1.45 MPa. The peak strain is 11.69 × 10<sup>−3</sup>, nearly 13 times that of basalt aggregate concrete. Moreover, using 3D printing phase change aggregate reduced concrete’s early peak hydration temperature by 7.1%. The thermal insulation capacity of the experiment cube model with phase change concrete has been improved. The results show that the novel 3D printing change aggregate concrete has good mechanical properties and latent heat storage, providing a guideline for applying PCMs in building materials.https://www.mdpi.com/1996-1944/15/23/8393phase change materials3D printingductilitythermal propertieslatent heat |
| spellingShingle | Jinyang Jiang Chaolang Zheng Fengjuan Wang Wenxiang Xu Liguo Wang Zhaoyi Chen Wei Su Novel 3D Printing Phase Change Aggregate Concrete: Mechanical and Thermal Properties Analysis Materials phase change materials 3D printing ductility thermal properties latent heat |
| title | Novel 3D Printing Phase Change Aggregate Concrete: Mechanical and Thermal Properties Analysis |
| title_full | Novel 3D Printing Phase Change Aggregate Concrete: Mechanical and Thermal Properties Analysis |
| title_fullStr | Novel 3D Printing Phase Change Aggregate Concrete: Mechanical and Thermal Properties Analysis |
| title_full_unstemmed | Novel 3D Printing Phase Change Aggregate Concrete: Mechanical and Thermal Properties Analysis |
| title_short | Novel 3D Printing Phase Change Aggregate Concrete: Mechanical and Thermal Properties Analysis |
| title_sort | novel 3d printing phase change aggregate concrete mechanical and thermal properties analysis |
| topic | phase change materials 3D printing ductility thermal properties latent heat |
| url | https://www.mdpi.com/1996-1944/15/23/8393 |
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