Abstract
This paper presents the effects of various volume fractions of polyethylene (PE) fibres of 0.5%, 1%, 1.5% and 2% on tensile, flexure and compressive behavior of PE fibres reinforced geopolymer composites (PE-FRGC). Results show that the 1% PE fibre by volume is the optimum fibre volume fraction for fly ash geopolymer composite, which exhibit superior strain and deflection hardening behavior in uni-axial tension and three-point bending, respectively. Results also show that the compressive strength of the composites decreases with increase in volume fractions of PE fibre. The fibre surface examination of PE fibre in the gopolymer matrix using scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS) revealed no significant damage of PE fibre in the alkaline geopolymer matrix.
Highlights
Geopolymer binder has been proposed as an alternative to ordinary Portland cement (OPC) binder in concrete and cement based construction materials
This paper presents experimental results on ductile behavior of PF fibre reinforced geopolymer composite containing four different volume fractions of PE fibre ranging from 0.5% to 2.0% in uni-axial tension, flexure and uni-xial compression
It can be seen that the control mix achieved about 80 MPa and the compressive strength of the composites decreased with increase in volume fractions of PE fibre
Summary
Geopolymer binder has been proposed as an alternative to ordinary Portland cement (OPC) binder in concrete and cement based construction materials. This paper presents experimental results on ductile behavior of PF fibre reinforced geopolymer composite containing four different volume fractions of PE fibre ranging from 0.5% to 2.0% in uni-axial tension, flexure and uni-xial compression.
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