Investigation of fatigue performance of asphalt mixtures and FAM mixes with high recycled asphalt material contents
Construction and Building Materials, ISSN: 0950-0618, Vol: 314, Page: 125607
2022
- 16Citations
- 28Captures
Metric Options: CountsSelecting the 1-year or 3-year option will change the metrics count to percentiles, illustrating how an article or review compares to other articles or reviews within the selected time period in the same journal. Selecting the 1-year option compares the metrics against other articles/reviews that were also published in the same calendar year. Selecting the 3-year option compares the metrics against other articles/reviews that were also published in the same calendar year plus the two years prior.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Article Description
Using a high content of recycled asphalt material, including reclaimed asphalt pavement (RAP) or recycled asphalt shingles (RAS), can be economically and environmentally beneficial. However, aged binder in RAP/RAS is a main concern for fatigue cracking resistance, therefore a reliable and efficient performance-related test for evaluating the effect of RAP/RAS on pavement performance is critical for the best use of these materials. In this study, four types of asphalt mixtures with various RAP/RAS contents higher than 20% were sampled from Southern California after different times at high temperature in the silo. To investigate the fatigue performance of these mixtures, four-point beam (4PB) fatigue testing was performed on full asphalt mixtures, and the linear amplitude sweep (LAS) testing was applied to their corresponding fine aggregate matrix (FAM) mixes. Testing results from FAM mixes have been analyzed within the viscoelastic continuum damage (VECD) framework. The relationships between fatigue life and strain level have been established for FAM mixes and full mixtures separately. The LAS testing results were compared among the FAM mixes with the same type of asphalt material but with different silo hours, which shows a good agreement with the observations from the 4PB testing results from full mixtures. Analyses of fatigue performance of both FAM mixes and full mixtures indicate that fatigue life decreases with the increase of RAP content, as expected, and that silo time shows an important effect. Finally, a strong linear correlation has been found between the strain value at failure of LAS tests of FAM mixes and the strain value at one million cycles to failure predicted from 4PB tests of full mixtures. This indicates that LAS fatigue testing on FAM mixes could predict the fatigue performance of asphalt materials containing high contents of RAP/RAS and potentially be developed as a surrogate performance-related test for asphalt mix design and/or QC/QA.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0950061821033444; http://dx.doi.org/10.1016/j.conbuildmat.2021.125607; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85119093824&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0950061821033444; https://dx.doi.org/10.1016/j.conbuildmat.2021.125607
Elsevier BV
Provide Feedback
Have ideas for a new metric? Would you like to see something else here?Let us know