A Forensic Investigation of Pavement Performance on the Ohio Strategic Highway Research Program Test Road PDF Download

Author: Angela G. Harrigal
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 0

View

Book Description

Author: Gonzalo R. Rada
Publisher: Transportation Research Board
ISBN: 0309283450
Category : Pavements
Languages : en
Pages : 162

View

Book Description
"TRB's National Cooperative Highway Research Program Report 747: Guide for Conducting Forensic Investigations of Highway Pavements explores a process for conducting forensic investigations of pavements that is designed to help understand the reasons behind premature failures or exceptionally good performance. The process also allows for the collection of data for use in developing or calibrating performance-prediction models. The report includes example forms and checklists for use during the conduct of an investigation. These forms can be modified to suit the particular requirements and procedures for the agency. The example forms are included with the print version of the report in CD-ROM format." --Publisher description.

Author: Margaretha Margowati
Publisher:
ISBN:
Category : Asphalt concrete
Languages : en
Pages : 392

View

Book Description

Author: David R. Lankard
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 124

View

Book Description

Author: The Organizing Committee of the 16th ICSMGE
Publisher: IOS Press
ISBN: 1614996563
Category : Technology & Engineering
Languages : en
Pages : 3742

View

Book Description
The 16th ICSMGE responds to the needs of the engineering and construction community, promoting dialog and exchange between academia and practice in various aspects of soil mechanics and geotechnical engineering. This is reflected in the central theme of the conference 'Geotechnology in Harmony with the Global Environment'. The proceedings of the conference are of great interest for geo-engineers and researchers in soil mechanics and geotechnical engineering. Volume 1 contains 5 plenary session lectures, the Terzaghi Oration, Heritage Lecture, and 3 papers presented in the major project session. Volumes 2, 3, and 4 contain papers with the following topics: Soil mechanics in general; Infrastructure and mobility; Environmental issues of geotechnical engineering; Enhancing natural disaster reduction systems; Professional practice and education. Volume 5 contains the report of practitioner/academic forum, 20 general reports, a summary of the sessions and workshops held during the conference.

Author:
Publisher:
ISBN:
Category : Express highways
Languages : en
Pages : 228

View

Book Description
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.

Author: Shad M. Sargand
Publisher:
ISBN:
Category : Nondestructive testing
Languages : en
Pages : 184

View

Book Description
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.

Author:
Publisher:
ISBN:
Category : Forensic engineering
Languages : en
Pages : 668

View

Book Description

Author: Shad M. Sargand
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 216

View

Book Description
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.

Author: Osama Ahmed Abdulshafi
Publisher:
ISBN:
Category : Asphalt
Languages : en
Pages : 54

View

Book Description
The Superpave hot mix asphalt design, which was developed under the Strategic Highway Research Program (SHRP), has been used in the following seven initial projects in Ohio: HAN-075-22.42, OTT-002-16.60, COS-036-27.53, CLE-032-0648, LAW/JAC-093-26.44/0.00, RIC-30-6.01, and ATH-033-05.48. The Ohio Department of Transportation (ODOT) intended to use data from these initial projects to relate the engineering characteristics of the asphalt mixes with future performance of the pavements, and to assure that the experiences of all involved parties are taken into consideration. To get such insight about Superpave mixes, ODOT formed a Superpave evaluation committee with representatives from ODOT, Federal Highway Administration (FHWA), Asphalt Institute, Flexible Pavement, Inc. (FPI), and academia. This research study was undertaken to collect in a uniform, organized manner the available data from ODOT and asphalt paving contractors on the initial seven Superpave paving projects. The collected data addresses various issues relating to the mix design process, construction practices and pavement performance, and should allow future pavement design process and construction technology to take advantage of previous experience.