Parallel Plate Gap Height Effect on DSR Measurements of GTR Modified Binders Article Swipe
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.2478/rjti-2024-0015
The current Superpave performance grade (PG) specification uses a dynamic shear rheometer (DSR) with a 1-mm gap height to determine the high-temperature performance grade of asphalt rubber binders. Concerns have arisen that rubber particulates exceeding 25% of the gap height might skew the measurements, leading to properties that do not accurately represent the actual behavior of ground tire rubber modified binders. This study explores adjusting the 1-mm gap height to better measure the high-temperature performance properties of these binders and minimize the interaction effects between the asphalt binder and rubber particles on PG grading results. A trial gap height of 2 mm was used to test three different ground tire rubber modified (GTR) binders. Both the standard Superpave high temperature grading test and the multiple stress creep and recovery (MSCR) test were employed. Results indicated a consistent trend for binders with 15% GTR, while notable differences were observed for 18% and 20% GTR. The 2 mm gap provided more stable results over several days compared to the 1 mm gap, likely due to reduced particle interaction at the increased concentration. Based on these findings, a 2 mm gap height is recommended for GTR modified binders.
Related Topics
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.2478/rjti-2024-0015
- OA Status
- gold
- References
- 12
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- OpenAlex ID
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Raw OpenAlex JSON
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https://openalex.org/W4407593910Canonical identifier for this work in OpenAlex
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https://doi.org/10.2478/rjti-2024-0015Digital Object Identifier
- Title
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Parallel Plate Gap Height Effect on DSR Measurements of GTR Modified BindersWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2024Year of publication
- Publication date
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2024-12-01Full publication date if available
- Authors
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Zeine Elabidine Boudnani, Glaoui Bachir, Merbouh M’hammed, F.J.G. Silva, Jorge B. SousaList of authors in order
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https://doi.org/10.2478/rjti-2024-0015Publisher landing page
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YesWhether a free full text is available
- OA status
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goldOpen access status per OpenAlex
- OA URL
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https://doi.org/10.2478/rjti-2024-0015Direct OA link when available
- Concepts
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Materials scienceTop concepts (fields/topics) attached by OpenAlex
- Cited by
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0Total citation count in OpenAlex
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12Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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