Abstract
In the present study, the impact resistance of rubber concrete at low temperatures (−30°C) was examined. The initial and ultimate crack impact times and the ductility indexes were evaluated. This study’s specimens were prepared by adding two different sizes of rubber particles (20 mesh and 50 mesh) in different ratios (0%, 5%, 10%, 15%, and 20%) at both 25°C and −30°C. The concrete specimens were evaluated using a drop hammer weight test method. The results showed that the initial and ultimate crack impact times and ductility indexes of the rubber concrete specimens had decreased at −30°C. Also, the decrease amplitudes were determined to be lower than those of the reference concrete specimens. Consideration was given in this study to the large variations in the impact values, and a two‐parameter Weibull distribution method was adopted in order to analyze the obtained experimental data. The results had demonstrated that the impact times of the rubber concrete specimens could be described using the two‐parameter Weibull distribution method results.
Highlights
With the rapid increases in the number of motor vehicles, the number of used tires has been increasing [1]
The impact resistance of the rubber concrete RC-50-20 had been increased by 361.5% when compared with the reference concrete
When compared with the reference concrete at 25°C, the impact resistance of the rubber concrete RC-20-20 was observed to have increased by 275.1% and the impact resistance of the rubber concrete RC-50-20 had increased by 225.1%. is study’s comparative analysis results showed that the increased amplitudes of the impact resistance of the rubber concrete specimens were definitely higher than those of the reference concrete at −30°C
Summary
With the rapid increases in the number of motor vehicles, the number of used tires has been increasing [1]. According to the predictions made by LMC Automotive, by 2024, the vehicle fleet will have grown by more than 25% [2], which will subsequently result in higher numbers of used tires. Erefore, high numbers of used vehicle tires will undoubtedly cause environmental pollution problems. The burning of used tires was found to be the easiest and cheapest method of disposal. Such incineration methods had produced toxic smoke, and it was found that the flames were difficult to extinguish. The powder residues which remained after tire burning processes resulted in serious soil pollution issues, and the oil generated by melting tires were found to cause pollution in nearby soil and water [4, 5]
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