Assessing grout imperfections in prestressed concrete using MWCNTs and temperature-magnetic response techniques
Unfilled grout inside steel ducts used in prestressed concrete bridges causes corrosion of the steel reinforcement within the grout. This research aimed to detect imperfections in prestressed concrete grout infused with multi-walled carbon nanotubes (MWCNTs) by utilizing Joule heating and measuring...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509525001378 |
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| author | Heeyoung Lee Sanggyu Park Wonseok Chung |
| author_facet | Heeyoung Lee Sanggyu Park Wonseok Chung |
| author_sort | Heeyoung Lee |
| collection | DOAJ |
| description | Unfilled grout inside steel ducts used in prestressed concrete bridges causes corrosion of the steel reinforcement within the grout. This research aimed to detect imperfections in prestressed concrete grout infused with multi-walled carbon nanotubes (MWCNTs) by utilizing Joule heating and measuring magnetic arena strength. Grout specimens containing MWCNTs were prepared with dimensions of ø100 mm × 200 mm. The grout satisfying rate and concentration of MWCNTs were used as test parameters. Joule heating experiments were performed, and magnetic arena measurements were obtained to investigate temperature variations and magnetic arena strength, respectively. The analysis revealed that grout mixed with 1.0 wt% MWCNT exhibited the largest temperature variation and magnetic arena strength, and these factors decreased with decreasing MWCNT concentration. The results confirm that detecting unfilled grout in steel ducts can be successfully achieved by measuring temperature variations and magnetic arena strength. |
| format | Article |
| id | doaj-art-3f065e25ef5f4e859bf9ea06d3210210 |
| institution | Kabale University |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-3f065e25ef5f4e859bf9ea06d32102102025-02-02T05:27:33ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e04339Assessing grout imperfections in prestressed concrete using MWCNTs and temperature-magnetic response techniquesHeeyoung Lee0Sanggyu Park1Wonseok Chung2Department of Civil Engineering, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, Republic of KoreaDepartment of Civil Engineering, Kyung Hee University, 1732 Deokyoung-Daero, Giheung-Gu, Yongin-Si, Gyeonggi-Do 17104, Republic of KoreaDepartment of Civil Engineering, Kyung Hee University, 1732 Deokyoung-Daero, Giheung-Gu, Yongin-Si, Gyeonggi-Do 17104, Republic of Korea; Correspondence to: Department of Civil Engineering, Kyung Hee University, 1732 Deokyoung-Daero, Giheung-Gu, Yongin-Si, Gyeonggi-Do 17104, Republic of Korea.Unfilled grout inside steel ducts used in prestressed concrete bridges causes corrosion of the steel reinforcement within the grout. This research aimed to detect imperfections in prestressed concrete grout infused with multi-walled carbon nanotubes (MWCNTs) by utilizing Joule heating and measuring magnetic arena strength. Grout specimens containing MWCNTs were prepared with dimensions of ø100 mm × 200 mm. The grout satisfying rate and concentration of MWCNTs were used as test parameters. Joule heating experiments were performed, and magnetic arena measurements were obtained to investigate temperature variations and magnetic arena strength, respectively. The analysis revealed that grout mixed with 1.0 wt% MWCNT exhibited the largest temperature variation and magnetic arena strength, and these factors decreased with decreasing MWCNT concentration. The results confirm that detecting unfilled grout in steel ducts can be successfully achieved by measuring temperature variations and magnetic arena strength.http://www.sciencedirect.com/science/article/pii/S2214509525001378Nano-groutMulti-walled carbon nanotubeSatisfying rateJoule heating propertiesTemperature variationMagnetic arena strength |
| spellingShingle | Heeyoung Lee Sanggyu Park Wonseok Chung Assessing grout imperfections in prestressed concrete using MWCNTs and temperature-magnetic response techniques Case Studies in Construction Materials Nano-grout Multi-walled carbon nanotube Satisfying rate Joule heating properties Temperature variation Magnetic arena strength |
| title | Assessing grout imperfections in prestressed concrete using MWCNTs and temperature-magnetic response techniques |
| title_full | Assessing grout imperfections in prestressed concrete using MWCNTs and temperature-magnetic response techniques |
| title_fullStr | Assessing grout imperfections in prestressed concrete using MWCNTs and temperature-magnetic response techniques |
| title_full_unstemmed | Assessing grout imperfections in prestressed concrete using MWCNTs and temperature-magnetic response techniques |
| title_short | Assessing grout imperfections in prestressed concrete using MWCNTs and temperature-magnetic response techniques |
| title_sort | assessing grout imperfections in prestressed concrete using mwcnts and temperature magnetic response techniques |
| topic | Nano-grout Multi-walled carbon nanotube Satisfying rate Joule heating properties Temperature variation Magnetic arena strength |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525001378 |
| work_keys_str_mv | AT heeyounglee assessinggroutimperfectionsinprestressedconcreteusingmwcntsandtemperaturemagneticresponsetechniques AT sanggyupark assessinggroutimperfectionsinprestressedconcreteusingmwcntsandtemperaturemagneticresponsetechniques AT wonseokchung assessinggroutimperfectionsinprestressedconcreteusingmwcntsandtemperaturemagneticresponsetechniques |