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http://dx.doi.org/10.5389/KSAE.2013.55.4.029

Mechanical Properties and Impact Resistance of Hybrid Fiber Reinforced Concrete with Type of Reinforcing Fibers for Precast Concrete  

Oh, Ri-On (공주대학교 일반대학원 농공학과)
Park, Chan Gi (공주대학교 지역건설공학과)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.55, no.4, 2013 , pp. 29-35 More about this Journal
Abstract
The objective of the current study is to evaluate the effects depending on the types of reinforcing fibers being influential in view of mechanical properties and impact resistance of hybrid fiber reinforced concrete (HFRC) for applications to precast concrete structure. Hybrid fibers applied therefor were three types such as PP/MSF (polypropylene fiber+macro synthetic fiber), PVA/MAF (polyvinyl alcohol fiber+MSF) and JUTE/MSF (natural jute fiber+MSF), where the volume fraction of PP, PVA and natural jute was applied with 0.2 %, respectively, while based on 0.05 % volume fraction of MSF. The HFRC was tested for slump, compressive strength, flexural strength and impact resistance. The test result demonstrated that mixture of such hybrid fibers improve compressive strength, flexural strength and impact resistance of concrete. Moreover, it was found that HFRCs to which hydrophilic fibers, i.e. PVA/MSF and JUTE/MSF, were mixed show more improved features that HFRC to which non-hydrophilic fiber, i.e. PP/MSF was mixed. Meanwhile, the finding that PVA/MSF HFRC exhibited better performance than JUTE/MSF HFRC was attributed from the former having higher aspect ratio than that of the latter.
Keywords
Abrasion; Durability; Hybrid fiber reinforced concrete (HFRC); Impact resistance; Mechanical properties;
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Times Cited By KSCI : 7  (Citation Analysis)
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