Development of a New Test Specimen with Tapered Cross-Section for Use in Uniaxial Fatigue Testing of Hot Mix Asphalt.

dc.contributor.author Karr, Grant J.
dc.contributor.department Civil Engineering
dc.date.accessioned 2019-05-28T19:42:15Z
dc.date.available 2019-05-28T19:42:15Z
dc.date.issued 2018-05
dc.identifier.uri http://hdl.handle.net/10125/62260
dc.subject Hot Mix Asphalt
dc.subject Asphalt Concrete Fatigue
dc.subject Asphalt Concrete Performance Testing
dc.title Development of a New Test Specimen with Tapered Cross-Section for Use in Uniaxial Fatigue Testing of Hot Mix Asphalt.
dc.type Thesis
dcterms.abstract Despite recent developments, two primary challenges associated with fatigue testing of asphalt concrete cylinders remain: end failures and applicability to in-situ samples. End failures, or failure regions developing outside the strain gauge length, occur frequently and significantly reduce the value of the test. Samples cored from the field are often made up of several construction lifts ranging from 38 – 150 mm, rendering it incompatible with standard test cylinder dimensions. This study proposes a modified specimen geometry for use in fatigue testing of asphalt concrete mixtures which addresses these two challenges. The proposed configuration is a prismatic specimen which can be sliced horizontally from a cylinder with a diameter of 150 mm. The dimensions of the specimen are 110 mm long by 100 mm wide with variable thickness. The specimen width is tapered along the longitudinal axis to encourage middle failures. Constant crosshead fatigue tests are performed on test specimens as a proof of concept.
dcterms.description M.S. Thesis. University of Hawaiʻi at Mānoa 2018.
dcterms.language eng
dcterms.publisher University of Hawaiʻi at Mānoa
dcterms.rights All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner.
dcterms.type Text
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