INVESTIGATION OF THE EFFECTS OF CONCRETE WASTE AGGREGATE ON THERMAL STRESSES IN CONCRETE PAVEMENTS

Baş F. İ.

9TH AZERBAIJAN CONGRESS ON LIFE, ENGINEERING,MATHEMATICAL, AND APPLIED SCIENCES, 20 - 22 Aralık 2024, ss.1179-1186, (Tam Metin Bildiri)

Özet

The increase in the global population has caused to the demolition of existing low-rise buildings, the construction of high-rise buildings, and the expansion of urbanization into new areas. Consequently, concrete production has surged, and the depletion of natural aggregate resources has accelerated.

Additionally, massive construction wastes have been generated due to the demolition of existing

buildings. Using concrete waste aggregate (CWA) in concrete pavements offers a sustainable solution

to these challenges. This study examined the effects of CWA on the flexural stresses occurring on

concrete pavements due to temperature differences between the upper and lower surfaces. Nonlinear finite element analyses were performed using ANSYS to model concrete pavements with CWA replacement levels of 0%, 30%, 50%, and 100%. The results showed that increasing CWA content

reduced the maximum principal stresses and equivalent stresses. Directional deformations on the X

and Y axes remained nearly constant with all CWA ratios.