Environment and Freeze-Thaw Cycles on the Fracture Mechanics of Fiber-Reinforced Concrete

Document Type : Original Article

Authors
AhamdReza Rahimi Chakdel 1
SeyedMohammad Mirhosseini 2
Ali Hassani Joshagani 3
MohammadReza MohammadAliha 4
1 Ph.D., Candidate, Department of Civil Engineering, Arak Branch, Islamic Azad University, Arak, Iran.
2 Associate Professor, Department of Civil Engineering, Arak Branch, Islamic Azad University, Arak, Iran.
3 Assistant professor, Department of Civil Engineering, Arak Branch, Islamic Azad University, Arak, Iran.
4 Associate Professor, School of Industrial Engineering, Iran University of Science and Technology (IUST), Tehran, Iran; Department of Mechanical Engineering, Engineering Faculty, Gebze Technical University, 41400 Gebze, Kocaeli, Turkey.
10.22034/road.2024.455901.2280
Abstract
By taking into consideration the consequences and rise in soil alkalinity that is a result of industry growth and reliance on fossil fuels, evaluating the reasons that lead to concrete degradation and deterioration was considered crucial. For this purpose, the mechanical behavior of fiber concrete under unstable environmental conditions was probed. Concrete composites with varying percentages of steel and glass fibers and no fibers were analyzed. Compressive, indirect tensile, and fracture toughness properties were evaluated using the Edge Notched Disc Bend (ENDB) test under freezing-thawing and acidic environments and the results were compared with normal conditions. Steel fibers decreased the strength in the specified cycles, while glass fibers showed a normal strength trend. Samples containing 1% of steel fibers showed a 15% increase in fracture toughness compared to 2% of these fibers in 300 cycles, while the strength of samples containing 1% of these fibers increased by 22% in the non-cycled state.
Keywords
Freeze/thaw
Fibrous Concrete
Fracture Toughness
Acid
ENDB
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