Impact of shear stress levels on validity of MSCR tests

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21260%2F23%3A00359202" target="_blank" >RIV/68407700:21260/23:00359202 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1080/14680629.2022.2106293" target="_blank" >https://doi.org/10.1080/14680629.2022.2106293</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/14680629.2022.2106293" target="_blank" >10.1080/14680629.2022.2106293</a>

Result language
angličtina
Original language name
Impact of shear stress levels on validity of MSCR tests
Original language description
Although the MSCR test has become an improvement over the Superpave® |G*|/sinδ parameter, shear stress levels specified in the MSCR test might prove to be too low to successfully represent the stresses occurring in the pavement. To address this hypothesis, five conventional asphalt binders and a total of twelve polymer-modified asphalt blends were tested by MSCR at two different temperatures (50°C and 60°C) as well as five different shear stress levels of 0.1, 3.2, 6.4, 12.8, and 25.6 kPa. The rut results of hot mix asphalts were correlated with the MSCR results. Consequently, better correlations were obtained at higher shear stress levels used in performing MSCR. Moreover, it was shown that MSCR test overestimated the positive effects elasticity on the asphalts’ rut resistance and, thus, more consideration should be given to the asphalt’s ability to resist the applied stresses than to its elastic recovery.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20101 - Civil engineering

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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