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Now showing items 11-20 of 36
Rating Precast Prestressed Concrete Bridges for Shear (FHWA-OK-08-08 2186)
(2008-12)
Shear capacity of real-world prestressed concrete girders designed in the 1960’s and 1970’s is a concern because AASHTO Standard Specifications (AASHTO-STD) employed the quarter-point rule for shear design, which is less ...
Real-time Scour Risk Identification and Information Management Evaluation (FHWA-OK-08-05 2190)
(2008-9)
This report describes accomplishments and presents the design and evaluation of the information system, called ScourCast™. The ScourCast™ system is capable of providing plan of action and other bridge information in a ...
Engineering Properties of Stabilized Subgrade Soils for Implementation of the AASHTO 2002 Pavement Design Guide (FHWA-OK-08-10 2185)
(2009-6)
A comprehensive laboratory study was undertaken to determine engineering properties of cementitiously stabilized common subgrade soils in Oklahoma for the design of roadway pavements in accordance with the AASHTO 2002 ...
Optimizing Concrete Mix Designs to Produce Cost Effective Paving Mixes (FHWA-OK-08-11 2199)
(2009-9)
This research is designed to determine the effect of the mechanically activated fly ash on fresh concrete properties and the ultimate strength of the hardened concrete. Six types of fly ash that are locally available in ...
Evaluation of Surface Free Energy Characteristics of Aggregates and Binders in Hot Mix Asphalt (FHWA-OK 02(03) 2152)
(2006-5)
The objectives of this project is to demonstrate whether the Surface Free Energy (SFE) concept reported by Cheng et al. (2002) can be utilized to characterize the moisture-induced damage potential of selected asphalt binders ...
DEVELOPMENT OF AN IMPROVED SYSTEM FOR CONTRACT TIME DETERMINATION (Phase I & II) (FHWA-OK-08-02)
(2008-9)
Phase I of this study was funded by OTC and was successfully completed in December, 2006. In phase I, ODOT highway projects were classified into three different Tiers through the evaluation of recently completed highway ...
LANGSTON UNIVERSITY ADDRESSING THE NEED FOR TECHNICAL SUPPORT SERVICES IN HOUSING THE OKLAHOMA DEPARTMENT OF TRANSPORTATION RESEARCH LIBRARY (FHWA-OK-08-06 210)
(2008-12)
The Oklahoma Department of Transportation (ODOT) Training Center utilizes Material’s Division personnel from time to time to evaluate asphalt and aggregates lab work for building bituminous pavements. These personnel are ...
Evaluation of Cold In-Place Recycling for Rehabilitation of Transverse Cracking on US 412 (FHWA-OK-07-04 2178)
(2007-12)
Successful rehabilitation of transverse cracked hot mix asphalt (HMA) pavements has been a challenge for state DOTs. Conventional thin HMA overlays allow the rapid return of the existing transverse cracks and thicker HMA ...
Oklahoma Department of Transportation sprayer equipment assessment & calibration workshops (FHWA-OK-09-08)
(2009-12)
Oklahoma State University (OSU) Roadside Vegetation Management (RVM) Program personnel assessed and inventoried 82 ODOT herbicide spray units. At these workshops, 259 ODOT herbicide applicators were trained in sprayer ...
PRESTRESS LOSSES AND THE ESTIMATION OF LONG-TERM DEFLECTIONS AND CAMBER FOR PRESTRESSED CONCRETE BRIDGES (FHWA-OK-07-08)
(2007-8)
Prestressed concrete, an ideal combination of concrete and high strength steel, has emerged as an efficient material for modern construction. The construction of prestressed concrete bridges as a standard practice in the ...