THE USE OF ULTRASONIC WAVES AND ANALYTICAL MODELING TO ESTIMATE ELASTICITY MODULUS OF RUBBER CONCRETE SPECIMEN

摘要

This research work aims to evaluate the influence of the addition of rubber aggregates on elasticity modulus experimentally by using ultrasonic waves and theoretically by analytical models. Based on ultrasonic waves in concrete specimen at different percentages of rubber granules, one can evaluate the static modulus (Estatic) from the dynamic elastic modulus (Edynamic), according to British code [7]. From the obtained experimental results, one can conclude that the use of rubber granules has the potential for vibration damping capacity. In other words, the rubber granules, reduces the kinetics of ultrasonic pulses in the material. This reduction is due to the decreasing density of rubber granules (RG), with respect to gravel. The concrete base of its aggregates can be used such as paving of vibrating tools. Analytical modeling (Hill and BHS models) is used. The analytically obtained results converge with those from experimental procedure and give a good agreement to other researcher's works.