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

Kazutaka Shirai, Junta Horii, Koki Nakamuta, Wee Teo

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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 thicknesses 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.
Original languageEnglish
Article number129568
JournalConstruction and Building Materials
Volume360
Early online date2 Nov 2022
DOIs
Publication statusPublished - 19 Dec 2022

Keywords

  • Composite member
  • Fiber-reinforced geopolymer (FRG)
  • Flexural test
  • Normal strength concrete
  • Polyvinyl alcohol (PVA) fiber

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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