PT Journal
AU Mohammed, A
   Abed, A
TI Evaluation of Nanomodified Asphalt with CaCO<sub>3</sub>: Rheological and Mixture Performance
SO Communications - Scientific Letters of the University of Zilina
PY 2025
BP D38
EP D53
VL 27
IS 1
DI 10.26552/com.C.2025.012
WP https://komunikacie.uniza.sk/artkey/csl-202501-0012.php
DE nanomaterial; asphalt; CaCO3; IDT; DSR; TSR
SN 13354205
AB The impact of using three contents of 1, 3 and 5 % of nano CaCO3 on the composition of asphalt binder and the mechanical properties of Hot Mix Asphalt (HMA) wearing course was studied. Laboratory tests were performed to examine the physical and rheological characteristics of nanomodified asphalt binder. In addition, Superpave Indirect Tensile Test (IDT) was conducted to evaluate the mechanistic characteristics and moisture susceptibility of the HMA. The test findings pointed that the nano modified asphalt with 5% nano CaCO<sub>3</sub>, decreased the temperature sensitivity due to asphalt stiffening and improved resistance to permanent deformation. Additionally, HMA mixture performance exhibits a substantial increase in moduli value at temperatures varying from 5 to 40 <sup>o</sup>C and increased flexibility at lower testing temperatures as compared to the neat HMA mixture.
ER