Abstract
Voids in mineral aggregate (VMA) is a basic gradation design index of mineral aggregate in hot mix asphalt (HMA). In order to avoid the tedious process of selecting qualified gradation by obtaining measured VMA values from a large number of experiments, a prediction method of VMA value ranking without testing is established in this paper. Several theoretical-empirical models about VMA corresponding to skeleton porosity, skeleton dense and suspension dense gradations are set up, respectively. According to VMA standard value, measured VCA and the established equation for calculating the passing rate of 2.36 mm or 4.75 mm sieve of skeleton dense gradation, the gradation types of several gradations to be analyzed can be determined, and then the corresponding prediction model maybe selected to predict the VMA value of each gradation. The experimental results based on AC13 (Asphalt concrete with nominal maximum particle size of 13.2 mm) show that the estimated VMA size order is exactly consistent with the measured values, which demonstrates the effectiveness of the prediction method.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.