Performance Evaluation of Fiber Reinforced Concrete Pavements Containing Waste Rubber Particles under Impact Load in Cold Weather

One of the up-to-date and strategic studies on concrete is its resistance to impact. The need toconstruct military structures and structures exposed to impact has made impact resistance particularlyimportant. Ordinary concrete exhibits many weaknesses against impact. To compensate for this weaknessin structures exposed to impact, high-performance concretes and fiber-reinforced concretes, which improvethe performance of concrete against impact, are used. Waste rubber particles have also recently beensubstituted for aggregates, which reduces the accumulation of rubber waste. In concrete samples, fiber isone of the materials that improves some mechanical properties of concrete such as flexural strength, impactresistance, etc. Therefore, in the present study, from the point of view of the effect of fibers on the propertiesof high-performance concrete, ۱% polyolefin fibers were used. Also, ۱۰% of the consumed aggregate wasreplaced with waste rubber particles. The samples were cured at temperatures of -۱۰ and ۲۵°C. Compressivestrength and impact resistance tests were performed on the samples at ۲۸ days of age. Also, using ABAQUSsoftware, the accuracy of the performed tests was investigated. The results indicate that polyolefin fibersincreased the compressive and impact strength at both curing temperatures, but the substitution of wasterubber particles decreased the compressive strength and increased the impact resistance. Reducing thecuring temperature had a negative effect on the compressive strength but a positive effect on the impactresistance.

Keywords:

Concrete pavement , Polyolefin fibers , Waste rubber particles , Cold weather , Compressive strength , Impact resistance