Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Linear Viscoelastic Limits for Determination of Dynamic Modulus of Bituminous Concrete Mixture in AMPT
The current practices of determining dynamic modulus such as the AASHTO TP: 79-10 procedure assumes that if the measured strain values are between 50-150 microstrain, the material is being tested in the linear viscoelastic regime. It is necessary that for the linear viscoelastic conditions to hold the applied load and measured strain, they should satisfy linear scaling and superposition and the determination of such limits when the material is subjected to static load (seating load) and haversine compressive loading can be nontrivial. In this investigation, the bituminous concrete mixtures were subjected to stress sweep test for select temperatures. The collected data was analyzed, and the linear viscoelastic limit was determined for each temperature and frequency by appealing to linear scaling and superposition. On comparison, the stress amplitude values calculated using the current AASHTO protocols were found to be greater than the linear stress amplitude values determined using the stress sweep test data. This emphasizes the importance of incorporation of linear limits for dynamic modulus computation.
Linear Viscoelastic Limits for Determination of Dynamic Modulus of Bituminous Concrete Mixture in AMPT
The current practices of determining dynamic modulus such as the AASHTO TP: 79-10 procedure assumes that if the measured strain values are between 50-150 microstrain, the material is being tested in the linear viscoelastic regime. It is necessary that for the linear viscoelastic conditions to hold the applied load and measured strain, they should satisfy linear scaling and superposition and the determination of such limits when the material is subjected to static load (seating load) and haversine compressive loading can be nontrivial. In this investigation, the bituminous concrete mixtures were subjected to stress sweep test for select temperatures. The collected data was analyzed, and the linear viscoelastic limit was determined for each temperature and frequency by appealing to linear scaling and superposition. On comparison, the stress amplitude values calculated using the current AASHTO protocols were found to be greater than the linear stress amplitude values determined using the stress sweep test data. This emphasizes the importance of incorporation of linear limits for dynamic modulus computation.
Linear Viscoelastic Limits for Determination of Dynamic Modulus of Bituminous Concrete Mixture in AMPT
Tejaswi, Pavitra (Autor:in) / Fatima, Jezna (Autor:in) / Padmarekha, A. (Autor:in) / Krishnan, J. Murali (Autor:in)
2013 Airfield & Highway Pavement Conference ; 2013 ; Los Angeles, California, United States
Airfield and Highway Pavement 2013 ; 1100-1111
18.06.2013
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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