Abstract
Asphalt (A 1) of the Marshall specimens tested in the third step of response surface methodology (RSM) and asphalt (A 2) of the cores with real aging was recovered according to ASTM D 5404 [Annual Book of ASTM Standards. Section Four. Construction. vol. 04.03. Roads and paving material; vehicle–pavement systems. ASTM. 2000]. Adherence and hardness of the asphalts (A 1 and A 2) were tested by a texture analyser, and also penetration test was evaluated according to ASTM D 5 [Annual Book of ASTM Standards. Section Four. Construction. vol. 04.03. Roads and paving material; vehicle–pavement systems. ASTM. 2000]. The crystallised fractions (CF) and the carbonyl groups (C O) contents of the asphalts (A 1 and A 2) was determined by differential scanning calorimeter (DSC) and Fourier Transform Infrared (FTIR), respectively. The change in the content of CF and C O for A 1 was described by a first-order Arrhenius equation, with a small activation energies that suggested a diffused–controlled process of the crystallites and the oxidation of the asphalt, which is related with the decrement in adherence and the increment in hardness and in penetration, highly dependent of aging time.
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.
