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Using crumb rubber particles obtained from end-of-life tires as aggregate in concrete can reduce the environmental overburden caused by the huge accumulation of these scrap tires. However, reduction in the mechanical properties of concrete is observed with the incorporation of rubber aggregates. To counter this detrimental effect of crumb rubber in...
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... test was conducted on a 100 kN capacity MTS machine and it was controlled by CMOD by using clips known as COD, attached on the two faces as shown in Figure 6. These clips can be easily attached with the test sample with the help of metallic supports which were glued with the specimen face beforehand exactly at the location of the notch at 5 mm distance from each other. ...
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We conducted various mechanical chcaracterization of two major cathode materials: LiCoO2 (LCO) and LiNi0.33Co0.33Mn0.33O2 (NCM) using ab-initio calculations, including the plotting of stress-strain curves and mechanical characterization of Li-deintercalated structures. Our main results are that the stiffness of LCO and NCM are similar whereas the s...
Citations
... Table 2 Effect of recycled rubber content on the workability of SCC results due to the roughness and the irregularity of rubber particles in concrete which trap a greater volume of air compared to natural gravels. These findings are also found to agree with those of Gillani et al. [38]. In their study, they considered a constant waterto-binder ratio of 0.4 and an air-entraining agent of 0.46 kg/m 3 such that the phenomena of segregation was found to decrease. ...
... The high strain capacity of rubber aggregates and residual post-peak strength of fiber reinforcement can be used to control cracking [5]. Gillani et al. [30] investigated the mechanical properties as well as the fracture energy of rubberized fiber-reinforced mortars. Although, mechanical properties showed reduction by the incorporation of rubber aggregates in mortar mixes. ...
... This reduction in MOE may be attributed to the lesser stiffness of rubber aggregates. Similar findings are reported by previous researchers [30]. This reduction may be attributed to poor bonding between cement paste and rubber aggregate and low modulus of elasticity of rubber aggregate according to the rule of mixture law [8]. ...
To improve the flexural behavior of thin bonded cement-based overlays, this study was carried out on the use of repair material incorporating amorphous metallic fibers (AMFs) in combination with the rubber aggregates obtained from grinding of worn-out tires. For this study, sixteen mortar mix compositions were prepared to contain AMFs and/or rubber aggregates to be used as overlay material while the substrate used was plain cement mortar. Rubber aggregates were incorporated at three different replacement ratios (i.e., 10%, 20% and 30%) by an equivalent volume of sand, and AMFs were added in three different dosages (i.e., 10 kg/m3, 20 kg/m3 and 30 kg/m3.). In this study, composite beams (500 × 100 × 140 mm) comprising substrate (500 × 100 × 100 mm) and repair layer (500 × 100 × 40 mm) were prepared and investigated under flexural loading. Experimental results showed that the increase in rubber content resulted in a decrease compressive strength, flexural strength and modulus of elasticity. Rubberized fiber-reinforced cementitious composites (30R30F) exhibited higher flexural toughness and the flexural toughness improved up to 400%. Toughness and maximum deflection of composite beams enhanced significantly due to synergetic effect of AMF and rubber aggregates. It was observed that before peak load, rubber plays its role by delaying the micro-crack propagation. Results also revealed that the steel fibers reinforcement plays an important role in restraining the crack openings under flexure loading. In the post-peak region, steel fibers control the cracks from propagating further by bridging action and provide higher post-peak residual strength.
