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Experimental study on the mechanical properties and the microstructure of hybrid-fiber-reinforced concrete under an early stage
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SYSNO ASEP 0511451 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Experimental study on the mechanical properties and the microstructure of hybrid-fiber-reinforced concrete under an early stage Author(s) Huang, H. (CN)
Yuan, Y. (CN)
Zhang, Wei (UTAM-F) RID, ORCID, SAI
Zhu, L. (CN)Number of authors 4 Source Title Structural Concrete. - : Wiley - ISSN 1464-4177
Roč. 21, č. 3 (2020), s. 1106-1122Number of pages 17 s. Publication form Print - P Language eng - English Country GB - United Kingdom Keywords bond property ; hybrid-fiber-reinforced concrete ; mechanical property ; scanning electron microscope Subject RIV JN - Civil Engineering OECD category Civil engineering Method of publishing Limited access Institutional support UTAM-F - RVO:68378297 UT WOS 000497691400001 EID SCOPUS 85075363625 DOI 10.1002/suco.201900262 Annotation Based on the fixed aspect ratio of 650 for carbon fiber (CF) in hybrid-fiberreinforced concrete (HFRC), this study investigated the effect of polypropylene fiber (PPF) and the aramid fiber (AF) aspect ratio on the mechanical properties of HFRC under the early stage. For this purpose, compressive, splitting tensile, and flexural tests were carried out to obtain the optimal hybridization parameters with respect to the aspect ratio of polypropylene fiber (PPF-AR) and aramid fiber (AF-AR) in HFRC. Additionally, the microstructure of HFRC was also examined by scanning electron microscope method to investigate the bond properties between fiber and a concrete matrix. It can be found from the results that the failure modes of overall tests are a ductile failure. The enhancement of tensile strength is attributed to PPF-AR, whereas AF-AR mainly tends to improve the performance in compressive and flexural strength. Meanwhile, the aspect ratio of fibers has little effect on the tensile-to-compressive-strength ratio (TC-R) or the flexural-to-compressive-strength ratio (FC-R) of earlystage HFRC. Workplace Institute of Theoretical and Applied Mechanics Contact Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Year of Publishing 2021 Electronic address https://doi.org/10.1002/suco.201900262
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