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Open AccessArticle

Experimental Investigation on the Impact Resistance of Carbon Fibers Reinforced Coral Concrete

1
College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China
2
Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Nanning 530004, China
*
Authors to whom correspondence should be addressed.
Materials 2019, 12(23), 4000; https://doi.org/10.3390/ma12234000
Received: 25 October 2019 / Revised: 22 November 2019 / Accepted: 29 November 2019 / Published: 2 December 2019
(This article belongs to the Section Construction and Building Materials)
In this study, the impact resistance of coral concrete with different carbon fiber (CF) dosages subjected to drop-weight impact test was investigated. For this purpose, three concrete strength grades (C20, C30, C40) and six CF dosages (0.0%, 0.3%, 0.6%, 1.0%, 1.5%, and 2.0% by weight of the binder) were considered, and a total of 18 groups of carbon fibers reinforced coral concrete (CFRCC) were cast. For each group, eight specimens were tested following the drop-weight impact test suggested by CECS 13. Then, the two-parameter Weibull distribution theory was adopted to statistically analyze the variations in experimental results. The results indicated that the addition of CFs could transform the failure pattern from obvious brittleness to relatively good ductility and improve the impact resistance of coral concrete. Moreover, the impact resistance of CFRCC increases with the CF dosage increasing. The statistical analysis showed that the probability distribution of the blow numbers at the initial crack and final failure of CFRCC approximately follows the two-parameter Weibull distribution. View Full-Text
Keywords: coral concrete; carbon fibers; impact resistance; drop-weight impact test; Weibull distribution coral concrete; carbon fibers; impact resistance; drop-weight impact test; Weibull distribution
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MDPI and ACS Style

Liu, B.; Zhou, J.; Wen, X.; Guo, J.; Zhang, X.; Deng, Z.; Wang, H. Experimental Investigation on the Impact Resistance of Carbon Fibers Reinforced Coral Concrete. Materials 2019, 12, 4000.

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