Rubberized concrete properties and its structural engineering applications – An overview

Abstract

This paper presents a review on rubberized concrete mixes and their properties such as strength, ductility, sound and water absorption, in addition to acid and sulphate resistance. Moreover, it discusses a review about using rubberized concrete in structural elements and its effect on ultimate compressive strength and ductility. Rubberized concrete mixes exhibit lower strength than ordinary concrete mixes. On the other hand, rubberized concrete has higher ductility and energy dissipation behaviour. Rubberized concrete with its lightweight showed a high resistance to freeze-thaw and sulphate and acid attacks in comparison with ordinary concrete. The most common structural member is Rubberized Concrete Filled Steel Tubes (RUCFST). In addition to the aforementioned merits of rubberized concrete, the confining effect of the steel tube recoups the reduction in concrete compressive strength caused by rubber inclusion. Limited researches concerned in strengthening and repairing of deficient Concrete Filled Steel Tubes (CFST) with different types of Fibre Reinforced Polymers (FRP). There is noticeable effect of using these FRP materials on RUCFST sections, ultimate strength and ductility.

Response of Rubcrete Continuous Deep Beams under Sinusoidal Loads

“…Concrete deep beams largely exposed to dynamic loads in different intensities and since the concrete is a brittle material, then researches nowadays towards to enhance the concrete energy absorption to dynamic loads. The published researches confirmed that, replacing scrapped tire rubber by a percentage of aggregate (or even adding it into the mix) provides an excellent energy absorption (but decreases the mechanical properties of concrete) [7][8][9][10][11][12][13][14][15][16]. The enhancement in impact energy of rubberized concrete (rubcrete) mixes reaches to (138-185-300-396%) for 5, 10, 15, 20% volumetric sand replacement, While (150-204-326-426%) for the same percentages of volumetric gravel replacement [17].…”