Static and Dynamic Performances of Chopped Carbon-Fiber-Reinforced Mortar and Concrete Incorporated with Disparate Lengths
The impact load, such as seismic and shock wave, sometimes causes severe damage to the reinforced concrete structures. This study utilized different lengths of chopped carbon fibers to develop a carbon-fiber-reinforced mortar (CFRM) and carbon-fiber-reinforced concrete (CFRC) with high impact and an...
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| Online Access: | https://www.mdpi.com/1996-1944/14/4/972 |
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| author | Yeou-Fong Li Kun-Fang Lee Gobinathan Kadagathur Ramanathan Ta-Wui Cheng Chih-Hong Huang Ying-Kuan Tsai |
| author_facet | Yeou-Fong Li Kun-Fang Lee Gobinathan Kadagathur Ramanathan Ta-Wui Cheng Chih-Hong Huang Ying-Kuan Tsai |
| author_sort | Yeou-Fong Li |
| collection | DOAJ |
| description | The impact load, such as seismic and shock wave, sometimes causes severe damage to the reinforced concrete structures. This study utilized different lengths of chopped carbon fibers to develop a carbon-fiber-reinforced mortar (CFRM) and carbon-fiber-reinforced concrete (CFRC) with high impact and anti-shockwave resistance. The different lengths (6, 12, and 24 mm) of chopped carbon fibers were pneumatically dispersed and uniformly mixed into the cement with a 1% weight proportion. Then the CFRM and CFRC specimens were made for static and dynamic tests. The compressive and flexural strengths of the specimens were determined by using the standard ASTM C39/C 39M and ASTM C 293-02, respectively. Meanwhile, a free-fall impact test was done according to ACI 544.2R-89, which was used to test the impact resistances of the specimens under different impact energies. The CFRM and CFRC with a length of 6 mm exhibit maximum compressive strength. Both flexural and free-fall impact test results show that the 24 mm CFRM and CFRC enhances their maximum flexural strength and impact numbers more than the other lengths of CFRM, CFRC, and the benchmark specimens. After impact tests, the failure specimens were observed in a high-resolution optical microscope, to identify whether the failure mode is slippage or rupture of the carbon fiber. Finally, a blast wave explosion test was conducted to verify that the blast wave resistance of the 24 mm CFRC specimen was better than the 12 mm CFRC and benchmark specimens. |
| first_indexed | 2024-03-09T00:45:07Z |
| format | Article |
| id | doaj.art-daef249365984c88962258636da9cf71 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T00:45:07Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-daef249365984c88962258636da9cf712023-12-11T17:35:13ZengMDPI AGMaterials1996-19442021-02-0114497210.3390/ma14040972Static and Dynamic Performances of Chopped Carbon-Fiber-Reinforced Mortar and Concrete Incorporated with Disparate LengthsYeou-Fong Li0Kun-Fang Lee1Gobinathan Kadagathur Ramanathan2Ta-Wui Cheng3Chih-Hong Huang4Ying-Kuan Tsai5Department of Civil Engineering, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 10608, TaiwanDepartment of Civil Engineering, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 10608, TaiwanDepartment of Civil Engineering, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 10608, TaiwanInstitute of Mineral Resources Engineering, National Taipei University of Technology, Taipei 10608, TaiwanDepartment of Architecture, National Taipei University of Technology, Taipei 10608, TaiwanDepartment of Environmental Information and Engineering, Chung Cheng Institute of Technology, National Defense University, P.O. Box 90047-82, Dasi, Taoyuan 33550, TaiwanThe impact load, such as seismic and shock wave, sometimes causes severe damage to the reinforced concrete structures. This study utilized different lengths of chopped carbon fibers to develop a carbon-fiber-reinforced mortar (CFRM) and carbon-fiber-reinforced concrete (CFRC) with high impact and anti-shockwave resistance. The different lengths (6, 12, and 24 mm) of chopped carbon fibers were pneumatically dispersed and uniformly mixed into the cement with a 1% weight proportion. Then the CFRM and CFRC specimens were made for static and dynamic tests. The compressive and flexural strengths of the specimens were determined by using the standard ASTM C39/C 39M and ASTM C 293-02, respectively. Meanwhile, a free-fall impact test was done according to ACI 544.2R-89, which was used to test the impact resistances of the specimens under different impact energies. The CFRM and CFRC with a length of 6 mm exhibit maximum compressive strength. Both flexural and free-fall impact test results show that the 24 mm CFRM and CFRC enhances their maximum flexural strength and impact numbers more than the other lengths of CFRM, CFRC, and the benchmark specimens. After impact tests, the failure specimens were observed in a high-resolution optical microscope, to identify whether the failure mode is slippage or rupture of the carbon fiber. Finally, a blast wave explosion test was conducted to verify that the blast wave resistance of the 24 mm CFRC specimen was better than the 12 mm CFRC and benchmark specimens.https://www.mdpi.com/1996-1944/14/4/972impact energycompressive strengthflexural strengthchopped carbon fibermortarconcrete |
| spellingShingle | Yeou-Fong Li Kun-Fang Lee Gobinathan Kadagathur Ramanathan Ta-Wui Cheng Chih-Hong Huang Ying-Kuan Tsai Static and Dynamic Performances of Chopped Carbon-Fiber-Reinforced Mortar and Concrete Incorporated with Disparate Lengths Materials impact energy compressive strength flexural strength chopped carbon fiber mortar concrete |
| title | Static and Dynamic Performances of Chopped Carbon-Fiber-Reinforced Mortar and Concrete Incorporated with Disparate Lengths |
| title_full | Static and Dynamic Performances of Chopped Carbon-Fiber-Reinforced Mortar and Concrete Incorporated with Disparate Lengths |
| title_fullStr | Static and Dynamic Performances of Chopped Carbon-Fiber-Reinforced Mortar and Concrete Incorporated with Disparate Lengths |
| title_full_unstemmed | Static and Dynamic Performances of Chopped Carbon-Fiber-Reinforced Mortar and Concrete Incorporated with Disparate Lengths |
| title_short | Static and Dynamic Performances of Chopped Carbon-Fiber-Reinforced Mortar and Concrete Incorporated with Disparate Lengths |
| title_sort | static and dynamic performances of chopped carbon fiber reinforced mortar and concrete incorporated with disparate lengths |
| topic | impact energy compressive strength flexural strength chopped carbon fiber mortar concrete |
| url | https://www.mdpi.com/1996-1944/14/4/972 |
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