SHEAR BEHAVIOR OF FLY ASH-BASED GEOPOLYMER R/C BEAM WITH BAUXITES AS COARSE AGGREGATES: EXPERIMENTAL PROGRAM

Authors

  • Angelina Eva Lianasari Faculty of Engineering, Universitas Atma Jaya Yogyakarta, Indonesia
  • Ade Lisantono Faculty of Engineering, Universitas Atma Jaya Yogyakarta, Indonesia
  • Johanes Januar Sudjati Faculty of Engineering, Universitas Atma Jaya Yogyakarta, Indonesia

Keywords:

Fly ash-based geopolymer concrete, Bauxite coarse aggregates, Shear behavior, Load-carrying capacity

Abstract

: Some regions in Indonesia have bauxite materials but difficult to find gravel stone for coarse
aggregates. Strength behavior of fly ash-based reinforced concrete beam with bauxite material as coarse
aggregates was very important to investigated before applying in the real project. Two beams were tested in
this study. The first beam was normal reinforced concrete beams as a reference beam. The second beam was
fly ash-based geopolymer reinforced concrete beam with bauxite as coarse aggregates. The beams had the
section of (120 mm × 240 mm) and simple support with span of 3000 mm. Two points loading was applied to
the beam to investigate the shear behavior. The beam specimens were tested under load control. A transfer
beam was used to transfer the load from the actuator to the beam. The experimental result showed that the
normal reinforced concrete beam and the fly ash-based geopolymer reinforced concrete beam with bauxite as
coarse aggregates were fail in shear failure. The normal reinforced concrete beam was failure in brittle manner,
while the fly ash-based geopolymer reinforced concrete beam was more ductile than the normal reinforced
concrete beam. The maximum load-carrying capacity of normal reinforced concrete beam was 14.30 kN with
maximum deflection was 23.78 mm. While the fly ash-based geopolymer concrete with bauxite as coarse
aggregates reached the maximum load-carrying capacity 14.45 kN with maximum the deflection was 49.49
mm. Comparing the shear strength based on the theory and experimental result showed that the experimental
result was lower than the theory.

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Published

2021-03-28

How to Cite

Angelina Eva Lianasari, Ade Lisantono, & Johanes Januar Sudjati. (2021). SHEAR BEHAVIOR OF FLY ASH-BASED GEOPOLYMER R/C BEAM WITH BAUXITES AS COARSE AGGREGATES: EXPERIMENTAL PROGRAM. GEOMATE Journal, 20(79), 155–160. Retrieved from https://geomatejournal.com/geomate/article/view/245