Influence of doping with styrene-butadiene rubber on dynamic and mechanical properties of polymer concrete
Kinga Deredas, Norbert Kępczak, Mariusz Urbaniak
Abstract
The paper studies the influence of doping polymer concrete with styrene-butadiene rubber (SBR) on its dynamic and mechanical properties. The research was divided into two stages. First, experimental modal analysis was carried out in the time and frequency domain from 0 to 2000 Hz to elaborate on the dynamic properties of the polymer. The results indicated that the sample with 30% of SBR had the lowest vibration amplitude value, while samples with 20 and 30% SBR had the highest values for the damping ratio. In the second stage, the mechanical properties of the samples were investigated – compression and flexural tests were performed. In both cases, the highest decrease of material strength was noticed for the 30% SBR samples. Although, increasing the amount of rubber granulate (SBR) in the polymer concrete improved the damping ratio and reduced the vibration amplitude. Based on these investigations it is not recommend to dope polymer concrete with more than 20% of SBR by volume.