| Full text | |
| Author(s): |
Total Authors: 2
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| Affiliation: | [1] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Transportat Engn, Ave Trabalhador Sao Carlense 400, Parque Arnold Sc, BR-13566590 Sao Carlos, SP - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | JOURNAL OF MATERIALS IN CIVIL ENGINEERING; v. 28, n. 2 FEB 2016. |
| Web of Science Citations: | 10 |
| Abstract | |
This paper presents a literature review covering the most used parameters and rheological properties for the characterization of the rutting resistance of asphalt cements (AC), or binders. They include the original Superpave parameter G{*}/sin delta and the nonrecoverable compliance J(nr) obtained in the multiple stress creep and recovery (MSCR) test. To draw typical examples of the differences between the rutting performances of binders as a function of the specification criterion, a 50/70-penetration grade AC was modified with crumb rubber (AC + rubber), low-density polyethylene (PE), and linear styrene-butadiene-styrene copolymer (SBS) such that the high PG grade is the same (76-xx) for all the formulations. The rankings of binders from the less to the most susceptible material to rutting showed some similarities for the selected parameters. However, the MSCR test was able to underline marked differences in the rheological responses of the formulations that could not be directly observed for the other procedures, as well as the stress sensitivity of the AC + rubber. Thus, the MSCR test was recommended as the best protocol for analyzing the rutting potential of binders. (c) 2015 American Society of Civil Engineers. (AU) | |
| FAPESP's process: | 13/20483-6 - Effects of Different Creep and Recovery Times on the Rheological Properties of Modified Asphalt Binders |
| Grantee: | Matheus David Inocente Domingos |
| Support Opportunities: | Scholarships in Brazil - Doctorate |