Effect of Recycled Asphalt Pavement on Thermal Cracking Resistance of Hot-Mix Asphalt

Autor:	Musharraf Zaman, Pranshoo Solanki, David Adje, Zahid Hossain
Rok vydání:	2015
Předmět:	Cracking Materials science Creep Asphalt pavement Asphalt Ultimate tensile strength Thermal Soil Science Geotechnical engineering Composite material
Zdroj:	International Journal of Geomechanics. 15
ISSN:	1943-5622 1532-3641
DOI:	10.1061/(asce)gm.1943-5622.0000398
Popis:	This study explored the thermal cracking resistance of hot-mix asphalt (HMA) mixes containing recycled asphalt pavement (RAP). One RAP source was used to design two types of Superpave mixes, namely, Oklahoma S3 base and Oklahoma S4 surface course. Four mixes containing different percentages of RAP, namely, 25 and 40% RAP for S3 base courses and 0 and 10% RAP for S4 surface courses, were designed and tested. It was found that at lower temperatures, the mix containing a lower RAP content was stiffer, as indicated by higher creep compliance and indirect tensile strength values. At higher temperatures, however, the mix containing a higher content of RAP was also stiffer. Furthermore, the measured creep compliance values were compared with current predicted compliance values. The influence of RAP content on thermal cracking resistance was also evaluated through thermal stress analysis within the mechanistic framework.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::46180a32bea731af4b4a34f890b07c91 https://doi.org/10.1061/(asce)gm.1943-5622.0000398 Zobrazit plný text záznamu