Abstract
Tire recycling and reuse in North America and worldwide have increased considerably, intending to reduce the harmful effects of scrap tires on the environment. Accordingly, the use of tire derived aggregates (TDA) as backfill material in civil engineering applications is on the rise at an unprecedented rate. However, to use TDA in the construction industry, its strength and stiffness parameters properties must be evaluated. One key factor that is known to influence the strength and stiffness of backfill material is the particle size of the used material. Hence, in this paper, a series of large-scale triaxial tests on five TDA samples with different maximum particle size, Dmax, of 19.05, 25.4, 38.1, 50.8 and 76.2 mm were conducted to investigate the effect of the particle size on the obtained results. The tests were done under consolidated drained conditions using three confining pressures of 50, 100, and 200 kPa. The results showed that the shear strength of TDA increase by increasing the maximum particle size while the cohesion did not show a specific trend. Moreover, the samples exhibited an increase in the secant elastic modulus by increasing the particle size.
Highlights
Tire-derived aggregate (TDA) is a relatively new construction material
The main focus of this work is studying the effect of the particle size on the shear strength and stiffness parameters of tire derived aggregates (TDA) using large-scale triaxial apparatus
The results showed that the angle of internal friction increased from 35.54◦ up to 42.24◦ for the samples with uniform particle sizes
Summary
Tire-derived aggregate (TDA) is a relatively new construction material. It has gained acceptance over the last few decades as a backfill material for embankments and earthretaining structures due to its lightweight and outstanding geotechnical properties [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17]. Moussa and El Naggar [25] found that TDA-infilled buried trenches could substantially improve the buried infilled trenches’ effectiveness to mitigate ground-borne vibrations. The main focus of this work is studying the effect of the particle size on the shear strength and stiffness parameters of TDA using large-scale triaxial apparatus
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
