Effect of nano-strengthening on the properties and microstructure of recycled concrete
Influence of nano-strengthening immersion on the properties of recycled aggregate (RA) and recycled aggregate concrete (RAC) and the microstructure of interfacial transition zones (ITZs) between mortar and aggregate were studied in this paper. Results showed that nano-strengthening immersion was hel...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2020-03-01
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| Series: | Nanotechnology Reviews |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/ntrev-2020-0008 |
| _version_ | 1823939195299692544 |
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| author | Meng Tao Zhang Jiaolong Wei Huadong Shen Jiajia |
| author_facet | Meng Tao Zhang Jiaolong Wei Huadong Shen Jiajia |
| author_sort | Meng Tao |
| collection | DOAJ |
| description | Influence of nano-strengthening immersion on the properties of recycled aggregate (RA) and recycled aggregate concrete (RAC) and the microstructure of interfacial transition zones (ITZs) between mortar and aggregate were studied in this paper. Results showed that nano-strengthening immersion was helpful to reduce the crushing value and total pore area of RA, to significantly improve the mechanical strength of RAC, and to modify the bond strength between RAC and steel rebar and the structural properties of RAC beams. Mercury intrusion porosimetry (MIP), micro-hardness (MH) and scanning electron microscope (SEM) observation were conducted in order to reveal the enhancement mechanism of nano-strengthening immersion. Results showed that the density and mechanical properties in ITZs were obviously improved by nano-strengthening because the coating and penetration of nano-materials was helpful to block the pores and cracks in ITZs, to avoid the directed gathering of CH crystal, and to accelerate the hydration of cement and mineral additions. |
| first_indexed | 2024-12-17T02:55:15Z |
| format | Article |
| id | doaj.art-e353d1272c5b4dbaa19e5b011b9df693 |
| institution | Directory Open Access Journal |
| issn | 2191-9097 |
| language | English |
| last_indexed | 2024-12-17T02:55:15Z |
| publishDate | 2020-03-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanotechnology Reviews |
| spelling | doaj.art-e353d1272c5b4dbaa19e5b011b9df6932022-12-21T22:06:18ZengDe GruyterNanotechnology Reviews2191-90972020-03-0191799210.1515/ntrev-2020-0008ntrev-2020-0008Effect of nano-strengthening on the properties and microstructure of recycled concreteMeng Tao0Zhang Jiaolong1Wei Huadong2Shen Jiajia3College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058, ChinaCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058, ChinaCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058, ChinaCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058, ChinaInfluence of nano-strengthening immersion on the properties of recycled aggregate (RA) and recycled aggregate concrete (RAC) and the microstructure of interfacial transition zones (ITZs) between mortar and aggregate were studied in this paper. Results showed that nano-strengthening immersion was helpful to reduce the crushing value and total pore area of RA, to significantly improve the mechanical strength of RAC, and to modify the bond strength between RAC and steel rebar and the structural properties of RAC beams. Mercury intrusion porosimetry (MIP), micro-hardness (MH) and scanning electron microscope (SEM) observation were conducted in order to reveal the enhancement mechanism of nano-strengthening immersion. Results showed that the density and mechanical properties in ITZs were obviously improved by nano-strengthening because the coating and penetration of nano-materials was helpful to block the pores and cracks in ITZs, to avoid the directed gathering of CH crystal, and to accelerate the hydration of cement and mineral additions.https://doi.org/10.1515/ntrev-2020-0008nano-strengtheningmechanical propertiesrecycled concreterecycled aggregateinterfacial transition zones |
| spellingShingle | Meng Tao Zhang Jiaolong Wei Huadong Shen Jiajia Effect of nano-strengthening on the properties and microstructure of recycled concrete Nanotechnology Reviews nano-strengthening mechanical properties recycled concrete recycled aggregate interfacial transition zones |
| title | Effect of nano-strengthening on the properties and microstructure of recycled concrete |
| title_full | Effect of nano-strengthening on the properties and microstructure of recycled concrete |
| title_fullStr | Effect of nano-strengthening on the properties and microstructure of recycled concrete |
| title_full_unstemmed | Effect of nano-strengthening on the properties and microstructure of recycled concrete |
| title_short | Effect of nano-strengthening on the properties and microstructure of recycled concrete |
| title_sort | effect of nano strengthening on the properties and microstructure of recycled concrete |
| topic | nano-strengthening mechanical properties recycled concrete recycled aggregate interfacial transition zones |
| url | https://doi.org/10.1515/ntrev-2020-0008 |
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