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Filtering by: Creator Johnson, G. R. Remove constraint Creator: Johnson, G. R. Decade 1980-1989 Remove constraint Decade: 1980-1989 Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • 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:
    Arabia Abstract approved: Redacted for Privacy l R. G. Hicks Saudi Arabia currently contains 31000 km

  • Evaluation of a unified design for asphalt recycling by means of dynamic and fatigue testing

    Creator:
    Whitcomb, William G.
    Abstract:
    Design methods for pavement mixtures containing recycled asphalt concrete have been explored in many studies. Most methods of design are modelled after procedures originally developed for conventional construction with virgin raw materials. The unique properties of aged asphalt as raw material are rarely considered when applying conventional procedures. The approach...
    Resource Type:
    Masters Thesis
    Full Text:
    means of dynamic and fatigue testing AN ABSTRACT OF THE THESIS OF William G. Whitcomb in Civil

  • 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:
    Asphalt Stripping from Aggregates I Redacted for Privacy Abstract Approved: FL'k.1 PU1" R. G. Hicks

  • Evaluation of selected marginal aggregates stabilized with cement

    Creator:
    Chang, Chen
    Abstract:
    Coastal Oregon is deficient in quality construction aggregate. There is, however, an abundance of lower quality, or marginal aggregate available for construction purposes. The purpose of this report is to develop techniques for upgrading marginal aggregates with portland cement and methods for evaluating the relative performance of these stabilized materials...
    Resource Type:
    Masters Thesis
    Full Text:
    Cement. Abstract Approved: Redacted for Privacy Thesis Advisor, R. G. Hicks Coastal Oregon is

  • Geotechnical significance of poorly crystalline soils derived from volcanic ash

    Creator:
    Thrall, F. G.
    Resource Type:
    Dissertation
    Full Text:
    derived from volcanic ash AN ABSTRACT OF THE THESIS OF Frederick G. Thrall for the degree of Doctor of

  • The effect of dissolved oxygen concentration on the activated sludge process

    Creator:
    Swanson, Gregory R.
    Abstract:
    Since the introduction of pure oxygen activated sludge systems in the late 1960's, proponents have claimed several advantages resulting from the elevated dissolved oxygen (DO) levels maintained. However, numerous comparative studies have failed to produce a consensus of professional opinion regarding the validity of these claimed advantages. The purpose of...
    Resource Type:
    Dissertation
    Full Text:
    Activated Sludge Process AN ABSTRACT OF THE THESIS OF Gregory R. Swanson for the degree of Doctor of

  • Evaluation of finite element techniques for soil reinforcement applications

    Creator:
    Berg, Ryan Robert
    Abstract:
    A literature review and a computer study are conducted to identify the requirements of finite element programs for the specific use of discrete analyses of reinforced soil structures. The utility of six commercially available programs are appraised with respect to the identified requirements. The results of the study are directed...
    Resource Type:
    Masters Thesis
    Full Text:
    I C l 04al C D 0- r g ,--i rd 0000 -,-1 4-) -.-1 44 C I I C N 1 04 alo 0 ", r g .--1 tii

  • Determination of structural layer properties of aggregate and asphalt surfaced roads

    Creator:
    Rwebangira, T.
    Abstract:
    This study involved the determination of the structural layer properties of aggregate and asphalt surfaced pavements for use in the evaluation of pavement load carrying capacity and the seasonal effects of moisture. This was achieved by the use of Nondestructive Testing Methods (NDT) and backcalculation techniques. Pavement surface deflection measurements...
    Resource Type:
    Dissertation
    Full Text:
    Layer Properties of Aggregate and Asphalt Surfaced Roads. Redacted for Privacy Abstract approved: R

  • Properties of marginal aggregates treated with asphalt emulsion

    Creator:
    Evans, Gary L.
    Abstract:
    The purpose of this report is to address the problem of supplying construction aggregates to Oregon's coastal areas that are currently, or will in the near future, be deficient of good quality materials. This is done primarily by studying methods of utilizing marginal aggregates that are abundantly available in the...
    Resource Type:
    Masters Thesis
    Full Text:
    Eugene Sand and Gravel Ross Island Sand and Gravel Company Johnson Rock Products Yaquina Head Quarries G

  • The control and fate of enteric bacteria in the environment with particular emphasis on the factors influencing fecal indicator survival in waste storage facilities

    Creator:
    Crane, Stuart R.
    Abstract:
    The indiscriminate release of fecal bacteria to the environment can present a public health hazard when pathogenic species gain access to drinking and recreational water sources. The extent of bacterial contamination of surface and ground waters associated with animal production units and waste application areas seems largely dependent on the...
    Resource Type:
    Dissertation
    Full Text:
    and friendship I would still be in the stone age. I would like to thank Dr. J. R. Miner and Dr. A. G