Flexural performance of recycled concrete beam reinforced with modified basalt fiber and nano-silica
To increase the surface roughness of basalt fiber (BF) and enhance the bonding properties with the concrete matrix, three modified solutions were prepared to treat the BF surface. The BF surface was modified by the best mixture-ratio solution after SEM and AFM tests. Modified basalt fiber (MBF) and...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523002012 |
| _version_ | 1797798983915012096 |
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| author | Yonggui Wang Junhui Cheng Junbo Wang |
| author_facet | Yonggui Wang Junhui Cheng Junbo Wang |
| author_sort | Yonggui Wang |
| collection | DOAJ |
| description | To increase the surface roughness of basalt fiber (BF) and enhance the bonding properties with the concrete matrix, three modified solutions were prepared to treat the BF surface. The BF surface was modified by the best mixture-ratio solution after SEM and AFM tests. Modified basalt fiber (MBF) and nano-silica (NS) were used as reinforcing materials to improve the RC. The MBF and NS contents were used as the mix ratio control parameter. Ten recycled concrete beams were designed. Through a four-point flexural test, the destruction characteristics, deflection, cracking load, maximum bearing capacity, and strain of RC beams were obtained. The effects of replacement rate, MBF content, and NS content on the flexural properties of the RC beams were obtained. The results showed that in comparison to modification by other solutions, the surface roughness of BF was greater with modification by 2.91% KH550 and 5% NS mixed solution. The failure characteristics were similar for natural aggregate concrete beams and RC beams reinforced with MBF and NS; all underwent four stages of ordinary concrete damage. The natural aggregate concrete beams had greater flexural strength and flexural resistance than RC beams. However, the MBF and NS, added separately or together, improved the dehiscence load, peak load, ductility, and tensile strain of the RC beams. The current standards can be used to calculate the cracking moment and ultimate bearing capacity of MBF and NS reinforced RC beams; their effect was significant. |
| first_indexed | 2024-03-13T04:12:05Z |
| format | Article |
| id | doaj.art-fd7d0dc9284b4baaa0550d8d4da90bc8 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-13T04:12:05Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-fd7d0dc9284b4baaa0550d8d4da90bc82023-06-21T06:54:11ZengElsevierCase Studies in Construction Materials2214-50952023-07-0118e02022Flexural performance of recycled concrete beam reinforced with modified basalt fiber and nano-silicaYonggui Wang0Junhui Cheng1Junbo Wang2School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China; Henan Province Engineering Laboratory for Eco-architecture and the Built Environment, Jiaozuo 454000, ChinaSchool of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, ChinaSchool of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China; China Construction Seventh Engineering Division Corp. Ltd., Zhengzhou, Henan 450004, China; Corresponding author at: School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China.To increase the surface roughness of basalt fiber (BF) and enhance the bonding properties with the concrete matrix, three modified solutions were prepared to treat the BF surface. The BF surface was modified by the best mixture-ratio solution after SEM and AFM tests. Modified basalt fiber (MBF) and nano-silica (NS) were used as reinforcing materials to improve the RC. The MBF and NS contents were used as the mix ratio control parameter. Ten recycled concrete beams were designed. Through a four-point flexural test, the destruction characteristics, deflection, cracking load, maximum bearing capacity, and strain of RC beams were obtained. The effects of replacement rate, MBF content, and NS content on the flexural properties of the RC beams were obtained. The results showed that in comparison to modification by other solutions, the surface roughness of BF was greater with modification by 2.91% KH550 and 5% NS mixed solution. The failure characteristics were similar for natural aggregate concrete beams and RC beams reinforced with MBF and NS; all underwent four stages of ordinary concrete damage. The natural aggregate concrete beams had greater flexural strength and flexural resistance than RC beams. However, the MBF and NS, added separately or together, improved the dehiscence load, peak load, ductility, and tensile strain of the RC beams. The current standards can be used to calculate the cracking moment and ultimate bearing capacity of MBF and NS reinforced RC beams; their effect was significant.http://www.sciencedirect.com/science/article/pii/S2214509523002012Recycled concrete beamModified basalt fiberNano-silicaFlexural performance |
| spellingShingle | Yonggui Wang Junhui Cheng Junbo Wang Flexural performance of recycled concrete beam reinforced with modified basalt fiber and nano-silica Case Studies in Construction Materials Recycled concrete beam Modified basalt fiber Nano-silica Flexural performance |
| title | Flexural performance of recycled concrete beam reinforced with modified basalt fiber and nano-silica |
| title_full | Flexural performance of recycled concrete beam reinforced with modified basalt fiber and nano-silica |
| title_fullStr | Flexural performance of recycled concrete beam reinforced with modified basalt fiber and nano-silica |
| title_full_unstemmed | Flexural performance of recycled concrete beam reinforced with modified basalt fiber and nano-silica |
| title_short | Flexural performance of recycled concrete beam reinforced with modified basalt fiber and nano-silica |
| title_sort | flexural performance of recycled concrete beam reinforced with modified basalt fiber and nano silica |
| topic | Recycled concrete beam Modified basalt fiber Nano-silica Flexural performance |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523002012 |
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