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  • Permanent deformation characteristics of dense-graded mixes using asphalt pavement analyzer

    Creator:
    Sandoval-Gil, Jesus A.
    Abstract:
    The Asphalt Pavement Analyzer (APA) device was used to characterize the impact of various mix factors on the development of permanent deformation in dense-graded mixes given a standard compactive effort. Factors included two aggregate sizes, three VMA levels, two fines contents, three binder contents and four binder types. All specimens...
    Resource Type:
    Dissertation

  • Development of performance based test procedures for asphalt mixtures

    Creator:
    Kliewer, Julie E.
    Abstract:
    In 1987, Congress authorized a 5 year $150 million dollar research program called the Strategic Highway Research Program (SHRP). SHRP was divided into four major areas, including the asphalt research program. The asphalt research program was divided into six major research contracts, one such contract, SHRP-003A was called Performance Related...
    Resource Type:
    Dissertation
    Full Text:
    , SHRP-003A was called Performance Related Testing and Measuring of Asphalt Aggregate Interaction and

  • Development of the simplified method to evaluate dynamic mechanical analysis data on asphalt-aggregate mixtures

    Creator:
    Ab-Wahab, Yunus Bin
    Abstract:
    Testing of asphalt binders and asphalt-aggregate mixtures using dynamic mechanical analysis is becoming popular with improvements in high-speed computers, precision equipment, and computer software. Researchers are trying to describe the behavior of asphalt binders and asphalt-aggregate mixtures in terms of their time- and temperature-dependent linear viscoelastic behavior. The objectives of...
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: Dr. Chris A. Bell Testing of asphalt binders and asphalt-aggregate mixtures using

  • Test method to determine the degree of asphalt stripping from aggregates

    Creator:
    Boudreau, Richard L.
    Abstract:
    Moisture damage has long been recognized as one of the most critical factors influencing the performance of asphalt concrete (AC) pavements. This moistureinduced damage occurs from either the physical separation of the asphalt film from the aggregate or the softening of the asphalt binder within the AC mixture in the...
    Resource Type:
    Masters Thesis
    Full Text:
    durability of an asphalt concrete (AC) pavement depends to a great degree on the adhesion between the

  • Development of a test procedure for water sensitivity of asphalt concrete mixtures

    Creator:
    Al-Swailmi, Saleh H.
    Abstract:
    Environmental factors such as temperature, air, and water can have a profound effect on the durability of asphalt concrete mixtures. In mild climates where good quality aggregates and asphalt cement are available, the major contribution to deterioration may be due to traffic loading and the resultant distress is manifested in...
    Resource Type:
    Dissertation
    Full Text:
    influencing the water sensitivity of asphalt concrete mixtures; and (2) development of laboratory testing

  • Evaluation of mix ingredients on the performance of rubber-modified asphalt mixtures

    Creator:
    Takallou, Hossein B.
    Abstract:
    Rubber-modified asphalt pavements have been used in Sweden and the United States since the 1970's. In these applications ground recycled tire particles (0.25 inch minus) are added to a gap-graded aggregate and then mixed with hot asphalt cement. The benefits of adding rubber to the mix include increased skid resistance...
    Resource Type:
    Dissertation
    Full Text:
    ) 2.21 Schematic of Center Feed Drum Dryer Plant for Rubber- 87 Modified Asphalt 3.1 Material Components

  • The effect of mixing moisture, oxidative aging and tire pressures on the performance of asphalt mixes

    Creator:
    Kim, Ok-kee
    Abstract:
    The research undertaken consisted of the study of three topics affecting the performance of asphalt concrete mixtures, that is, mixing moisture, oxidative aging and higher tire pressures and axle loads. This thesis presents the findings of the research comprising these three topics. In the first study, the effects of mixing...
    Resource Type:
    Dissertation
    Full Text:
    , Pavebond Special) on performance of asphalt mixtures were evaluated using repeated load diametral testing

  • Evaluation of emulsified asphalt for use in Saudi Arabia

    Creator:
    Al-abdulwahhab, Hamad I.
    Abstract:
    Saudi Arabia currently contains 31000 km (18600 mi) of paved roads and 42000 km (25200 mi) of agricultural roads, with the prospect of more roads to be constructed. The low population (6 million) compared to the large area of the country (2,253,300 km², 900,000 mi²) coupled with the high cost...
    Resource Type:
    Dissertation
    Full Text:
    Pavement Problems 26 2.2.4 Need for Emulsified Asphalt 30 2.3 Emulsified Asphalt in Saudi Arabia 30 2.4

  • Evaluation of water damage on asphalt concrete mixtures using the environmental conditioning system

    Creator:
    Al-Joaib, Ali Abdulla
    Abstract:
    Asphalt concrete pavement is subjected to several damaging actions from traffic loads, water (from precipitation and/or groundwater sources), and temperature. The durability of the asphalt-aggregate mixture, its ability to withstand these damaging actions for long periods, is a very important engineering property. While the durability of the asphalt-aggregates mixture depends...
    Resource Type:
    Dissertation
    Full Text:
    : Dr. Ronald L. Terrel Asphalt concrete pavement is subjected to several damaging actions from traffic

  • Development of Technologies to Evaluate Hot Mix Asphalt Adhesion through Tack Coat

    Creator:
    Mahmoud, Aiman Mustafa H.
    Abstract:
    Flexible pavements consist of multilayers, which form the pavement structures. Since the strength of the bond at interface between layers plays a significant role in improving the structural integri-ty and the performance of pavement structures, tack coat materials and methods used for their application during construction are important in providing...
    Resource Type:
    Masters Thesis
    Full Text:
    application rate (0.07 gal/yd2) was used for testing. 6-inch by 6-inch squares were drawn on the pavement