Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effects of Asphalt Mixture Input on AASHTOWare Pavement Mechanistic-Empirical Design Analysis of Rehabilitated Pavements
https://orcid.org/http://orcid.org/0009-0008-0777-5374
https://orcid.org/http://orcid.org/0000-0003-2958-003X
https://orcid.org/http://orcid.org/0000-0002-4523-1588
https://orcid.org/http://orcid.org/0000-0003-3283-6235
Hot-Mix Asphalt (HMA) creep compliance is a primary mechanical property input for the AASHTOWare Pavement Mechanistic-Empirical Design (PMED) software for design analysis of rehabilitated pavements. This study investigated the impact of the creep of HMA mixes with reclaimed asphalt pavement (RAP) on the performance of the HMA-overlaid pavements in Kansas. Hierarchical Level 1 inputs of creep compliance were obtained for two overlay mixtures by the AASHTO T 322–07 test method. Level 3 inputs were obtained as defaults in the PMED analysis software. Twenty-five asphalt concrete (AC) overlays over existing AC and 14 AC overlays over Jointed Plain Concrete Pavement (JPCP) were selected to make distress predictions using the AASHTOWare PMED software (version 6.2). The failure criteria for new asphalt pavements were used in PMED. The distresses predicted include roughness (in terms of the International Roughness Index, IRI), permanent deformation (rutting), AC total transverse cracking (thermal plus reflective), AC thermal cracking, AC fatigue cracking (both bottom-up and top-down), and JCPC transverse cracking in terms of percent slabs (AC overlay over JPCP only). The results show that mixtures with softer binders produced less thermal cracking for AC overlays on existing AC pavements. For AC overlays on existing JPCP, a mixture with a lower PG-grade binder eliminated thermal cracking on the AC overlays. For most projects, a softer binder also helped decrease the total transverse cracking.
Effects of Asphalt Mixture Input on AASHTOWare Pavement Mechanistic-Empirical Design Analysis of Rehabilitated Pavements
https://orcid.org/http://orcid.org/0009-0008-0777-5374
https://orcid.org/http://orcid.org/0000-0003-2958-003X
https://orcid.org/http://orcid.org/0000-0002-4523-1588
https://orcid.org/http://orcid.org/0000-0003-3283-6235
Hot-Mix Asphalt (HMA) creep compliance is a primary mechanical property input for the AASHTOWare Pavement Mechanistic-Empirical Design (PMED) software for design analysis of rehabilitated pavements. This study investigated the impact of the creep of HMA mixes with reclaimed asphalt pavement (RAP) on the performance of the HMA-overlaid pavements in Kansas. Hierarchical Level 1 inputs of creep compliance were obtained for two overlay mixtures by the AASHTO T 322–07 test method. Level 3 inputs were obtained as defaults in the PMED analysis software. Twenty-five asphalt concrete (AC) overlays over existing AC and 14 AC overlays over Jointed Plain Concrete Pavement (JPCP) were selected to make distress predictions using the AASHTOWare PMED software (version 6.2). The failure criteria for new asphalt pavements were used in PMED. The distresses predicted include roughness (in terms of the International Roughness Index, IRI), permanent deformation (rutting), AC total transverse cracking (thermal plus reflective), AC thermal cracking, AC fatigue cracking (both bottom-up and top-down), and JCPC transverse cracking in terms of percent slabs (AC overlay over JPCP only). The results show that mixtures with softer binders produced less thermal cracking for AC overlays on existing AC pavements. For AC overlays on existing JPCP, a mixture with a lower PG-grade binder eliminated thermal cracking on the AC overlays. For most projects, a softer binder also helped decrease the total transverse cracking.
Effects of Asphalt Mixture Input on AASHTOWare Pavement Mechanistic-Empirical Design Analysis of Rehabilitated Pavements
https://orcid.org/http://orcid.org/0009-0008-0777-5374
https://orcid.org/http://orcid.org/0000-0003-2958-003X
https://orcid.org/http://orcid.org/0000-0002-4523-1588
https://orcid.org/http://orcid.org/0000-0003-3283-6235
Hot-Mix Asphalt (HMA) creep compliance is a primary mechanical property input for the AASHTOWare Pavement Mechanistic-Empirical Design (PMED) software for design analysis of rehabilitated pavements. This study investigated the impact of the creep of HMA mixes with reclaimed asphalt pavement (RAP) on the performance of the HMA-overlaid pavements in Kansas. Hierarchical Level 1 inputs of creep compliance were obtained for two overlay mixtures by the AASHTO T 322–07 test method. Level 3 inputs were obtained as defaults in the PMED analysis software. Twenty-five asphalt concrete (AC) overlays over existing AC and 14 AC overlays over Jointed Plain Concrete Pavement (JPCP) were selected to make distress predictions using the AASHTOWare PMED software (version 6.2). The failure criteria for new asphalt pavements were used in PMED. The distresses predicted include roughness (in terms of the International Roughness Index, IRI), permanent deformation (rutting), AC total transverse cracking (thermal plus reflective), AC thermal cracking, AC fatigue cracking (both bottom-up and top-down), and JCPC transverse cracking in terms of percent slabs (AC overlay over JPCP only). The results show that mixtures with softer binders produced less thermal cracking for AC overlays on existing AC pavements. For AC overlays on existing JPCP, a mixture with a lower PG-grade binder eliminated thermal cracking on the AC overlays. For most projects, a softer binder also helped decrease the total transverse cracking.
Effects of Asphalt Mixture Input on AASHTOWare Pavement Mechanistic-Empirical Design Analysis of Rehabilitated Pavements
Lecture Notes in Civil Engineering
Pereira, Paulo (Herausgeber:in) / Pais, Jorge (Herausgeber:in) / Gao, Ya (Autor:in) / Hossain, Mustaque (Autor:in) / MotahariTabari, SeyedArmin (Autor:in) / Kulesza, Stacey (Autor:in)
International Conference on Maintenance and Rehabilitation of Pavements ; 2024 ; Guimarães, Portugal
Proceedings of the 10th International Conference on Maintenance and Rehabilitation of Pavements ; Kapitel: 47 ; 492-505
21.07.2024
14 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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