Bonding behavior of lap-spliced reinforcing bars embedded in ultra-high-performance concrete with steel fibers
This study explores the bond strength of steel reinforcing bars in normal concrete (NC) and ultra-high-performance concrete (UHPC) with steel fibers, focusing on the behavior of lap-spliced rebars. Key variables such as rebar diameter (D), spacing (s), lap-splice length (L1), and hook length (L2) we...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Developments in the Built Environment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666165924002667 |
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| author | Krairerk Aiamsri Teerasak Yaowarat Suksun Horpibulsuk Apichat Suddeepong Apinun Buritatum Kanchana Hiranwatthana Kirati Nitichote |
| author_facet | Krairerk Aiamsri Teerasak Yaowarat Suksun Horpibulsuk Apichat Suddeepong Apinun Buritatum Kanchana Hiranwatthana Kirati Nitichote |
| author_sort | Krairerk Aiamsri |
| collection | DOAJ |
| description | This study explores the bond strength of steel reinforcing bars in normal concrete (NC) and ultra-high-performance concrete (UHPC) with steel fibers, focusing on the behavior of lap-spliced rebars. Key variables such as rebar diameter (D), spacing (s), lap-splice length (L1), and hook length (L2) were evaluated to understand their impact on bond performance. Both NC and UHPC increase in bond strength with greater spacing and lap-splice length, with UHPC demonstrating significantly stronger bond characteristics due to its higher compressive strength. A novel predictive method for calculating bond strength is proposed, offering practical guidance for designing lap-spliced rebars in construction, and includes reduction factors tailored for realistic construction settings. This method achieves an error margin below ±16.5%, providing an accurate approach for practitioners. This rational method incorporates both engineering and economic considerations, particularly valuable for applications in precast concrete structures where enhanced bond performance and durability are essential. |
| format | Article |
| id | doaj-art-18815e2cdf5f49cba167a14bc0ea3d4d |
| institution | Kabale University |
| issn | 2666-1659 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Developments in the Built Environment |
| spelling | doaj-art-18815e2cdf5f49cba167a14bc0ea3d4d2024-12-17T05:01:05ZengElsevierDevelopments in the Built Environment2666-16592024-12-0120100585Bonding behavior of lap-spliced reinforcing bars embedded in ultra-high-performance concrete with steel fibersKrairerk Aiamsri0Teerasak Yaowarat1Suksun Horpibulsuk2Apichat Suddeepong3Apinun Buritatum4Kanchana Hiranwatthana5Kirati Nitichote6Center of Excellence in Innovation for Sustainable Infrastructure Development, Suranaree University of Technology, Nakhon Ratchasima 30000, ThailandCenter of Excellence in Innovation for Sustainable Infrastructure Development, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; Undergraduate Program in Civil and Infrastructure Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; Corresponding author. Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand.Center of Excellence in Innovation for Sustainable Infrastructure Development, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; Undergraduate Program in Civil and Infrastructure Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; Academy of Science, The Royal Society of Thailand, Bangkok 10300, Thailand; Corresponding author. Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand.Center of Excellence in Innovation for Sustainable Infrastructure Development, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; Institute of Research and Development, Suranaree University of Technology, Nakhon Ratchasima 30000, ThailandCenter of Excellence in Innovation for Sustainable Infrastructure Development, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; Undergraduate Program in Civil and Infrastructure Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; Corresponding author. Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand.Center of Excellence in Innovation for Sustainable Infrastructure Development, Suranaree University of Technology, Nakhon Ratchasima 30000, ThailandThe Concrete Products and Aggregate Co., Ltd. Bangkok 10800, ThailandThis study explores the bond strength of steel reinforcing bars in normal concrete (NC) and ultra-high-performance concrete (UHPC) with steel fibers, focusing on the behavior of lap-spliced rebars. Key variables such as rebar diameter (D), spacing (s), lap-splice length (L1), and hook length (L2) were evaluated to understand their impact on bond performance. Both NC and UHPC increase in bond strength with greater spacing and lap-splice length, with UHPC demonstrating significantly stronger bond characteristics due to its higher compressive strength. A novel predictive method for calculating bond strength is proposed, offering practical guidance for designing lap-spliced rebars in construction, and includes reduction factors tailored for realistic construction settings. This method achieves an error margin below ±16.5%, providing an accurate approach for practitioners. This rational method incorporates both engineering and economic considerations, particularly valuable for applications in precast concrete structures where enhanced bond performance and durability are essential.http://www.sciencedirect.com/science/article/pii/S2666165924002667Ultra-high performance concrete (UHPC)Bond strengthPull-out testsLap-splice tests |
| spellingShingle | Krairerk Aiamsri Teerasak Yaowarat Suksun Horpibulsuk Apichat Suddeepong Apinun Buritatum Kanchana Hiranwatthana Kirati Nitichote Bonding behavior of lap-spliced reinforcing bars embedded in ultra-high-performance concrete with steel fibers Developments in the Built Environment Ultra-high performance concrete (UHPC) Bond strength Pull-out tests Lap-splice tests |
| title | Bonding behavior of lap-spliced reinforcing bars embedded in ultra-high-performance concrete with steel fibers |
| title_full | Bonding behavior of lap-spliced reinforcing bars embedded in ultra-high-performance concrete with steel fibers |
| title_fullStr | Bonding behavior of lap-spliced reinforcing bars embedded in ultra-high-performance concrete with steel fibers |
| title_full_unstemmed | Bonding behavior of lap-spliced reinforcing bars embedded in ultra-high-performance concrete with steel fibers |
| title_short | Bonding behavior of lap-spliced reinforcing bars embedded in ultra-high-performance concrete with steel fibers |
| title_sort | bonding behavior of lap spliced reinforcing bars embedded in ultra high performance concrete with steel fibers |
| topic | Ultra-high performance concrete (UHPC) Bond strength Pull-out tests Lap-splice tests |
| url | http://www.sciencedirect.com/science/article/pii/S2666165924002667 |
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