Abstract
In the present work, carnauba wax (CW) type 4 was used as an additive in warm mix asphalt (WMA) technology. Rheological experiments were performed with the binders to determine viscoelasticity properties such as complex shear modulus (G∗) and phase angle (δ). Binders were also evaluated in terms of its penetration and softening point. Master curves of G∗ and δ were obtained from the rheological data. Multi-stress creep and recovery (MSCR) test was used for determination of percent recovery and non-recoverable creep compliance of modified and neat asphalt cements. The effect of CW addition produced higher values of complex modulus when compared to the neat asphalt cement. The CW modified asphalt cement has also shown small values of δ in the range of frequency investigated, showing improved elastic properties. The use of CW as an additive allowed the hot mix asphalt (HMA) to be mixed and compacted using lower temperatures. Those values of reduction in mixing and compaction temperatures were obtained comparing the compaction densification index (CDI) and the traffic densification index (TDI) results with the ones found for conventional HMA.
Sign-in/Register to access full text options 
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
