Concept of Similarity Method for Prediction of Fatigue Life of Pavement Structures with HiMA Binder in Asphalt Layers
| Autor: | Magdalena Złotowska, Krzysztof Błażejowski, Roman Nagórski |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
flexible road pavement 0211 other engineering and technologies New materials 02 engineering and technology HiMA lcsh:Technology Article highly modified asphalt binder Similarity (network science) similarity method 021105 building & construction 0502 economics and business medicine General Materials Science lcsh:Microscopy lcsh:QC120-168.85 050210 logistics & transportation estimation of pavement life lcsh:QH201-278.5 business.industry lcsh:T 05 social sciences Fatigue testing Stiffness Subgrade Structural engineering Base course Asphalt concrete Asphalt lcsh:TA1-2040 lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering medicine.symptom business lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials, Vol 14, Iss 480, p 480 (2021) Materials Volume 14 Issue 3 |
| ISSN: | 1996-1944 |
| Popis: | Since 2009, SBS (styrene-butadiene-styrene) polymer-modified binders (HiMA—Highly Modified Asphalt) have been tested worldwide. Highly modified binders are characterized by extraordinary properties resulting from the reversal of the binder-polymer phase. This contributes to very good test results for asphalt mixes. The use of such a modern binder poses a challenge in terms of structure design, mainly due to the lack of a recognized and calibrated method suitable for this material. The article proposes a new approach to pavement fatigue life estimation—the Similarity Method—which is based on the use of AASHTO 2004 equations and laboratory fatigue testing results of asphalt concrete mixes for asphalt base course. The article presents the method and the results of its sensitivity testing with respect to the influence of the material (type of asphalt concrete), thickness of the asphalt base course, stiffness of the subgrade and the assumed FC index (the area of bottom-up cracks). The results of fatigue life according to the Similarity Method are within the range of values obtained for AASHTO 2004 and the fatigue results according to the equations obtained in the laboratory. This approach will enable inclusion of new materials, such as HiMA asphalt mixtures, in pavement structure design. |
| Databáze: | OpenAIRE |
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