Feasibility, Mechanical Properties, and Environmental Impact of 3D-Printed Mortar Incorporating Recycled Fine Aggregates from Decoration and Renovation Waste.
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| Title: | Feasibility, Mechanical Properties, and Environmental Impact of 3D-Printed Mortar Incorporating Recycled Fine Aggregates from Decoration and Renovation Waste. |
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| Authors: | Yuan, Pu1 (AUTHOR), Wang, Xinjie1,2 (AUTHOR) wangxinjie@cczu.edu.cn, Huang, Jie2,3 (AUTHOR), Shi, Quanbin1,2 (AUTHOR), Hua, Minqi2,3 (AUTHOR) |
| Source: | Materials (1996-1944). Apr2026, Vol. 19 Issue 8, p1618. 30p. |
| Subjects: | Construction & demolition debris, Sustainable construction, Mechanical behavior of materials, Mortar, Ecological impact, Mineral aggregates, Carbon emissions, Microstructure |
| Abstract: | To address the accumulation of construction and demolition waste (W&D), this study recycled it into regenerated fine aggregate and prepared 3D-printed mortars with replacement ratios ranging from 0% to 100%. The mechanical properties of hardened specimens were tested, and the degradation mechanisms of mechanical performance were investigated through SEM, MIP, and microhardness analysis. The carbon emissions of the materials were evaluated. The results indicated that while the 3D-printed mortar exhibited excellent buildability, its compressive strength, flexural strength, and interlayer bond strength gradually decreased with increasing replacement ratio. MIP results showed that as the replacement ratio of the W&D increased from 0% to 100%, the total porosity of the 3D-printed specimens significantly increased from 14.7433% to 27.5903%. SEM and microhardness images confirmed severe ITZ deterioration, and the average ITZ width increased from 31 to 79 μm. As the W&D replacement ratio increased from 0% to 100%, the total GWP decreased from 0.4043 to 0.3800 kg CO2-eq/kg mortar. Maximizing the utilization of W&D is key to achieving efficient utilization of solid waste. Considering printability, mechanical performance, interlayer behavior, microstructural characteristics, and environmental impact in a comprehensive manner, the 80% W&D replacement ratio can be regarded as a relatively balanced and promising selection. This work not only suggests the technical feasibility of recycling W&D in 3D printing mortar, but also proposes a sustainable pathway to reduce carbon emissions in construction. [ABSTRACT FROM AUTHOR] |
| Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 193436287 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Feasibility, Mechanical Properties, and Environmental Impact of 3D-Printed Mortar Incorporating Recycled Fine Aggregates from Decoration and Renovation Waste. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Yuan%2C+Pu%22">Yuan, Pu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Xinjie%22">Wang, Xinjie</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> wangxinjie@cczu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Huang%2C+Jie%22">Huang, Jie</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shi%2C+Quanbin%22">Shi, Quanbin</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hua%2C+Minqi%22">Hua, Minqi</searchLink><relatesTo>2,3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Apr2026, Vol. 19 Issue 8, p1618. 30p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Construction+%26+demolition+debris%22">Construction & demolition debris</searchLink><br /><searchLink fieldCode="DE" term="%22Sustainable+construction%22">Sustainable construction</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Mortar%22">Mortar</searchLink><br /><searchLink fieldCode="DE" term="%22Ecological+impact%22">Ecological impact</searchLink><br /><searchLink fieldCode="DE" term="%22Mineral+aggregates%22">Mineral aggregates</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+emissions%22">Carbon emissions</searchLink><br /><searchLink fieldCode="DE" term="%22Microstructure%22">Microstructure</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: To address the accumulation of construction and demolition waste (W&D), this study recycled it into regenerated fine aggregate and prepared 3D-printed mortars with replacement ratios ranging from 0% to 100%. The mechanical properties of hardened specimens were tested, and the degradation mechanisms of mechanical performance were investigated through SEM, MIP, and microhardness analysis. The carbon emissions of the materials were evaluated. The results indicated that while the 3D-printed mortar exhibited excellent buildability, its compressive strength, flexural strength, and interlayer bond strength gradually decreased with increasing replacement ratio. MIP results showed that as the replacement ratio of the W&D increased from 0% to 100%, the total porosity of the 3D-printed specimens significantly increased from 14.7433% to 27.5903%. SEM and microhardness images confirmed severe ITZ deterioration, and the average ITZ width increased from 31 to 79 μm. As the W&D replacement ratio increased from 0% to 100%, the total GWP decreased from 0.4043 to 0.3800 kg CO2-eq/kg mortar. Maximizing the utilization of W&D is key to achieving efficient utilization of solid waste. Considering printability, mechanical performance, interlayer behavior, microstructural characteristics, and environmental impact in a comprehensive manner, the 80% W&D replacement ratio can be regarded as a relatively balanced and promising selection. This work not only suggests the technical feasibility of recycling W&D in 3D printing mortar, but also proposes a sustainable pathway to reduce carbon emissions in construction. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/ma19081618 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 30 StartPage: 1618 Subjects: – SubjectFull: Construction & demolition debris Type: general – SubjectFull: Sustainable construction Type: general – SubjectFull: Mechanical behavior of materials Type: general – SubjectFull: Mortar Type: general – SubjectFull: Ecological impact Type: general – SubjectFull: Mineral aggregates Type: general – SubjectFull: Carbon emissions Type: general – SubjectFull: Microstructure Type: general Titles: – TitleFull: Feasibility, Mechanical Properties, and Environmental Impact of 3D-Printed Mortar Incorporating Recycled Fine Aggregates from Decoration and Renovation Waste. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Yuan, Pu – PersonEntity: Name: NameFull: Wang, Xinjie – PersonEntity: Name: NameFull: Huang, Jie – PersonEntity: Name: NameFull: Shi, Quanbin – PersonEntity: Name: NameFull: Hua, Minqi IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 04 Text: Apr2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 19961944 Numbering: – Type: volume Value: 19 – Type: issue Value: 8 Titles: – TitleFull: Materials (1996-1944) Type: main |
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