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Experimental investigation on the mechanical and interfacial properties of fiber-reinforced geopolymer layer on the tension zone of normal concrete

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Title: Experimental investigation on the mechanical and interfacial properties of fiber-reinforced geopolymer layer on the tension zone of normal concrete
Authors: Shirai, Kazutaka Browse this author →KAKEN DB
Horii, Junta Browse this author
Nakamuta, Koki Browse this author
Teo, Wee Browse this author
Keywords: Fiber-reinforced geopolymer (FRG)
Polyvinyl alcohol (PVA) fiber
Composite member
Normal strength concrete
Flexural test
Issue Date: 19-Dec-2022
Publisher: Elsevier
Journal Title: Construction and building materials
Volume: 360
Start Page: 129568
Publisher DOI: 10.1016/j.conbuildmat.2022.129568
Abstract: This study aimed to understand the mechanical and interfacial properties of fiber-reinforced geopolymer (FRG) layer on the tension zone of normal concrete. A trial mix of FRG using local materials obtained in Hokkaido was investigated. Compression and splitting tensile tests on the FRG test pieces were conducted under different mixing procedures, constituents, volume fractions of the polyvinyl alcohol fiber, curing conditions, and ages. Flexural tests using FRG-normal strength concrete (NSC) composite specimens with different FRG layer thick-nesses were carried out. By placing the FRG layer on the tension side of the composite specimen, the flexural strength and energy absorption were significantly increased. The flexural strength for the NSC alone was 3.5 MPa, while the FRG-NSC composite specimens showed higher flexural strengths of 6.1-6.6 MPa. Also, XRD, FTIR, and SEM analyses were carried out for the FRG samples.
Type: article
URI: http://hdl.handle.net/2115/87551
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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