Download or read book The Ohio Strategic Highway Research Program Specific Pavement Studies Test Road as Constructed written by Ohio Research Institute for Transportation and the Environment and published by . This book was released on 1997 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Load Response Instrumentation of SHRP Pavement written by A. Bodocsi and published by . This book was released on 2006 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of its support for the Strategic Highway Research Program (SHRP), the Ohio Department of Transportation, in conjunction with the Federal Highway Administration constructed a comprehensive test road encompassing four of nine experiments in the Specific Pavement Studies (SPS) of SHRP. The 3.4 mile long project is located on US 23 in Delaware County. The Ohio/SHRP test road is a four lane divided highway constructed in the 170 foot wide median of the existing facility. The new southbound lanes were constructed of asphalt concrete (AC) and contain the SPS-1 and SPS-9 experiment. The new northbound lanes were constructed using Portland cement concrete (PCC) and contain the SPS-2 experiment. Once ODOT decided to participate in the SHRP, staff engineers viewed this as an opportunity to obtain pavement response data for validating and calibrating pavement analysis models. After review of the experimental design of the SHRP sections, thirty three of the forty original sections were chosen for environmental and dynamic load response instrumentation using a total of 1296 gages for measuring strain, deflection, pressure, moisture, temperature, and frost depth. Research was needed to calibrate, install, and to measure pavement response during controlled loading, moisture and temperature in the pavement structure, and climatic conditions above the pavement. Due to the large number of gages being installed, the effort was divided among six universities. The University of Cincinnati was one of two universities responsible for the calibration and installation of dynamic response instrumentation.
Download or read book Development of an Instrumentation Plan for the Ohio SPS Test Pavement DEL 23 17 48 written by Shad M. Sargand and published by . This book was released on 1994 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Specific Pavement Studies (SPS) program, formulated under the Strategic Highway Research Program (SHRP), consists of nine experiments, four of which will be included in this DEL-23 project. Since the basic instrumentation plan proposed by SHRP was limited, Ohio Department of Transportation opted to develop a more comprehensive plan for DEL-23. The Ohio Test Road consists of SPS-1, SPS-2, SPS-8, and SPS-9 experiments, all constructed for this project where the climate, soil, and topography are uniform throughout. In this comprehensive instrumentation plan, thirty-three sections are to be instrumented. LTPP guidelines require four instrumented sections in each of the SPS-1 and SPS-2 experiments for the study of seasonal factors and dynamic response. DEL-23 includes an additional nine instrumented sections for the SPS-1 experiment, twelve sections for the SPS-2 experiment, and two sections each in the SPS-8 and SPS-9 experiments to study structural response parameters. A total of eighteen sections will be instrumented for the study of seasonal factors, ten more sections than required by SHRF. This report provides a detailed description of types of sensors, installation and methodology, calibration procedures and wiring schematics for instrumentation of pavements for the Ohio SHRP SPS Test Road to measure environmental factors and structural response. Environmental or climatic paramaters include temperature, base and subbase moisture, and frost depth. Structural response parameters entail strain, deflection, pressure and joint opening.
Download or read book A Forensic Investigation of Pavement Performance on the Ohio Strategic Highway Research Program Test Road written by Angela G. Harrigal and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Determination of Pavement Layer Stiffness on the Ohio SHRP Test Road Using Non destructive Testing Techniques written by Shad M. Sargand and published by . This book was released on 2002 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1994-96, the Ohio Department of Transportation (ODOT) constructed a 3.5-mile long test pavement on US 23 in Delaware County for the Strategic Highway Research Program. This project contained a total of 40 test sections of asphalt concrete and Portland cement concrete pavement in the SPS-1, SPS-2, SPS-8 and SPS-9 experiments of the Specific Pavement Studies program. These experiments were designed to assess the effectiveness of different base types and thicknesses, different pavement thicknesses and other design parameters on the structural performance of highway pavements. During the construction of these sections, the Falling Weight Deflectometer (FWD) was used to measure the composite stiffness of the sections as each new material layer was completed and accepted by ODOT. In addition, the Dynaflect trailer was used to measure the composite stiffness of the completed sections prior to their being opened to traffic. The overall objectives of this research study were to evaluate the stiffness of the test sections on this experimental pavement as the new material layers were added to the sections, and to evaluate various analysis software packages currently available for the backcalculation of layer moduli. While the Ohio SHRP Test Road was constructed in an area of flat terrain believed to have relatively uniform subgrade, FWD measurements indicated considerable subgrade variability between sections and within individual sections. None of the subgrade sections was considered to be good, about half were fair and the other half were poor to very poor. As expected, much of the variability was mitigated as successive material layers were placed in the sections, and especially with the addition of stabilized materials. Stiffness equivalencies were developed for the six types of base material used on the test road, and for AC and PCC pavement used on these bases. The final stiffness of the completed sections was consistent with early performance, in that the first six asphalt concrete sections which failed had the highest measured deflections with both the FWD and Dynaflect just prior to being opened to traffic. An excellent correlation was developed between FWD and Dynaflect output on the completed asphalt concrete pavement sections and clear trends were also apparent on PCC pavement, though the limited range of readings on PCC with both devices made it difficult to develop a definitive correlation on rigid pavement. The stiffness of the completed AC and PCC pavement sections, and load transfer across PCC pavement joints were quite similar when measured with the FWD and Dynaflect, demonstrating the usefulness of both instruments in evaluating structural performance. Four elastic layer programs were evaluated for their ability to calculate the moduli of the various material layers in the 40 test sections. Of these, MODULUS 4.2 performed the best and was the most user friendly program to run. To obtain consistent results on any specific project, a standard operating procedure needs to be developed for those conditions and the analysis program being used, and the procedure needs to be closely followed for all calculations.
Download or read book Constructing and Controlling Compaction of Earth Fills written by Donald W. Shanklin and published by ASTM International. This book was released on 2000 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Presents 22 papers, from the July 1999 symposium, written on the use of various standardized methods for specifying and controlling the compaction of soil for engineered constructed earth fills. Perspectives include the historical background, current state-of-the- art practices, case histories of challenging situations, concerns regarding appropriate design parameters for compaction control, and new methods to evaluate soil compaction and related qualities. Annotation copyrighted by Book News, Inc., Portland, OR.
Download or read book Ohio Test Road Seasonal Instrumentation written by and published by . This book was released on 1997 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance of both flexible and rigid pavements depends not only on the effects of traffic but also of the environment. As part of the FHWA Strategic Highway Research Program (SHRP), a test road was recently constructed on U.S. 23 just north of Delaware, Ohio. This road includes four different sets of sections to study various factors affecting pavement performance. Monitoring seasonal (environmental) factors is of extreme importance as they affect subgrade soil and pavement layer properties and subsequently pavement life and performance. Installation and monitoring of eighteen seasonal instrumentation sites as well as monitoring of a complete weather station is described. Both subgrade soil moisture content, pavement and subgrade temperature, and frost depth are periodically monitored at each location, along with weather-related factors such as air temperature, rainfall, solar radiation, relative humidity, wind speed, and wind direction at a complete weather station. The methodology to check the quality of the data is presented along with preliminary results and correlations of use in the eventual development of a mechanistic pavement design procedure. Finite elements computer analyses were also conducted to determine the influence of seasonal factors on the response of flexible pavements (in the form of deflections, stresses and strains) to traffic loads[.] [sic] Specifically, equations were developed to correlate AC temperatures with hourly ambient air temperatures to ultimately determine the resilient modulus. Using material test results from a parallel study, finite element analyses were conducted on actual pavement sections using the program ILLIPAVE. Results show reasonably accurate comparisons for stress, strain, and deflections between pavements modeled with a constant average modulus and those modeled with multiple layers having moduli established by temperature. However, key parameters such as surface deflection and radial strain do not show comparisons justifiable for using constant moduli analyses.
Download or read book Highway Research Abstracts written by and published by . This book was released on 1994 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Concrete Pavement Design Construction and Performance Second Edition written by Norbert J. Delatte and published by CRC Press. This book was released on 2014-05-22 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition of Concrete Pavement Design, Construction, and Performance provides a solid foundation for pavement engineers seeking relevant and applicable design and construction instruction. It relies on general principles instead of specific ones, and incorporates illustrative case studies and prime design examples to highlight the material. It presents a thorough understanding of materials selection, mixture proportioning, design and detailing, drainage, construction techniques, and pavement performance. It also offers insight into the theoretical framework underlying commonly used design procedures as well as the limits of the applicability of the procedures. All chapters have been updated to reflect recent developments, including some alternative and emerging design technologies that improve sustainability. What’s New in the Second Edition: The second edition of this book contains a new chapter on sustainability, and coverage of mechanistic-empirical design and pervious concrete pavements. RCC pavements are now given a new chapter. The text also expands the industrial pavement design chapter. Outlines alternatives for concrete pavement solutions Identifies desired performance and behavior parameters Establishes appropriate materials and desired concrete proportions Presents steps for translating the design into a durable facility The book highlights significant innovations such as one is two-lift concrete pavements, precast concrete pavement systems, RCC pavement, interlocking concrete pavers, thin concrete pavement design, and pervious concrete. This text also addresses pavement management, maintenance, rehabilitation, and overlays.
Download or read book Accelerated Testing of Ohio SHRP written by William F. Edwards and published by . This book was released on 2004 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Resilient Modulus Testing for Pavement Components written by Mary Stroup-Gardiner and published by ASTM International. This book was released on 2003 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Resilient modulus indicates the stiffness of a soil under controlled confinement conditions and repeated loading. The test is intended to simulate the stress conditions that occur in the base and subgrade of a pavement system. Resilient modulus has been adopted by the U.S. federal highway administration as the primary performance parameter for pavement design. We thank those who prepared these papers, the reviewers who provided anonymous peer reviews, and those who participated in the symposium. We hope this STP encourages more work to improve the testing standard and the value of the Resilient Modulus test."
Download or read book Transportation Research Record written by and published by . This book was released on 1998 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of Highway Construction for Cuyahoga County written by Bureau of Municipal Research (Cleveland, Ohio) and published by . This book was released on 1927 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nondestructive Evaluation of Bridges and Highways written by and published by . This book was released on 1996 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seasonal Instrumentation of SHRP Pavements the Ohio State University written by William Edward Wolfe and published by . This book was released on 1998 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental instruments to measure temperature, soil moisture and frost depth were installed at five test sections of the SHRP pavement project on U.S. 23 north of Delaware, Ohio. At three of these locations tensiometers, which a designed to measure negative pore pressures, were added to the instrumentation package. The pore pressures as recorded by the tensiometers have increased from initially negative to positive values at each location and throughout the profile in the first year after installation of the instrument package was completed. At the same time, data collected from the moisture probes were showing a corresponding increase in soil moisture content. Samples of an aggregate base and clayey subgrade material were collected at several locations on the DEL 23 project by ODOT. They were delivered to the OSU soil mechanics laboratory for classification and permeability determination. The aggregate base conformed to ODOT material specification Item 304. Measured permeability coefficients ranged between 2x10 [to the minus 2] and 2.9x10 [to the minus 2] cm /sec. The clayey material was classified as a low plasticity clay (AASHTO Classification A-6 to A-7-6) with permeability coefficients ranging between 1x10 [to the minus 6] and 4x10 [to the minus 8] cm/sec.
Download or read book Research Project written by Allen L. Sehn and published by . This book was released on 2000 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Focus written by and published by . This book was released on 1997 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
