Fracture Behavior of slag & flyash-based geopolymer concrete in comparison with OPC-based vonventional concrete including the effect of steel and hybrid fibers
Abstract: The study presents an experimental investigation of the fracture behavior of hardened slag and fly ash-based alkali-activated normal and high-strength geopolymer concrete compared with conventional Ordinary Portland Cement (OPC) based concrete with steel and hybrid fibers. The fracture parameters considered in the experimental investigation include fracture energy, stress intensity factor, energy release rate, and characteristic length. The study concludes that the observed differences in the fracture and mechanical performance of the conventional and geopolymer concrete agree with the microstructural differences between these concrete systems reported in past literature. The slag-based geopolymer concrete is marginally inferior to the O.P.C.-based concrete with similar compressive strength in fracture performance. Also, hybrid fiber reinforcement improves the fracture performance of geopolymer concrete more than the steel fiber alone. Contrary to geopolymer concrete, steel fiber reinforced conventional concrete is superior to hybrid fiber reinforced conventional concrete in terms of fracture behavior.
| Main Authors: | , , , , |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Pontificia Universidad Católica de Chile. Departamento de Ingeniería y Gestión de la Construcción
2023
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| Online Access: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-50732023000200362 |
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