Evaluation of ultrasound method for determining aggregate gradations in asphaltic concrete mixes

The purpose of this study is to evaluate a geotechnical method, ultrasound, to detect aggregate gradation differences in asphaltic concrete pavements. Empirical data had previously been used to suggest that the more coarse the gradation, the less incidence's of rutting. It is my thesis that the more coarse the gradation, the higher the velocity of a sound wave through the asphalt concrete. This being the case, the velocity measure can be used in a design or field quality control procedure as a correlation to a performance test to choose a coarse gradation that has non-rutting field performance properties. Tests were performed on actual production quality control samples of various gradation types to demonstrate that the ultrasound velocities detect gradation.

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Civil and Environmental Engineering

Grantor dc:publisher

University of Nevada, Las Vegas

Year

1995

Author dc:creator

• Dunning, Michael Robert

Contributors dc:contributor

• Moses Karakouzian

Statement dc:rights

• IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

Language dc:language

English

Identifier

https://oasis.library.unlv.edu/rtds/581

OAI identifier oai:identifier

oai:oasis.library.unlv.edu:rtds-1580