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Long Term Monitoring Of Moisture Under Pavements
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Book Synopsis Long Term Monitoring of Moisture Under Pavements by : William Edward Wolfe
Download or read book Long Term Monitoring of Moisture Under Pavements written by William Edward Wolfe and published by . This book was released on 2010 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monitoring of the environmental instrumentation installed under select pavement sections constructed by the Ohio Department of Transportation (ODOT) in 1995 on US 23 in Delaware County, Ohio was continued. The measurements made consisted of soil moisture, temperature and frost depth profiles.
Book Synopsis Soil Moisture Monitoring Under Pavement Structures Using Time Domain Reflectometry by : Douglas L. Kane
Download or read book Soil Moisture Monitoring Under Pavement Structures Using Time Domain Reflectometry written by Douglas L. Kane and published by . This book was released on 1986 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Long Term Monitoring and Evaluation of Drainable Bases at I-90 Test Road by : Madhar Mohammad Taamneh
Download or read book Long Term Monitoring and Evaluation of Drainable Bases at I-90 Test Road written by Madhar Mohammad Taamneh and published by . This book was released on 2009 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: "It is a well recognized fact that pavements with poor subsurface drainage properties prematurely exhibit distress and have higher life-cycle cost. Thus, providing adequate subsurface drainage in a pavement system to remove the infiltrated moisture in a timely manner is an important design consideration. Currently, Ohio Department of Transportation (ODOT) accepts several types of materials specifications for use as drainable base materials. They are ODOT 307 (NJ, IA, and CE), ODOT 308 (asphalt treated), and ODOT 306 (cement treated). However, the effectiveness of these base materials in actual service has not been conclusively established in previous ODOT studies. Consequently, a research project, so-called ATB-90, was initiated in 2002 to provide additional data to asses the merits of the drainable bases in the asphalt pavement. At the present time, most of the current drainage criteria have been developed on the basis of describing water flow in saturated conditions. Yet this could happen in a very limited circumstance and time duration. In this study, a transient analysis using SEEP/W program was conducted to simulate water flow in a flexible pavement system. A new predictive equation along with design charts for estimating the time required to drain 50 percent saturation were developed by utilizing the results of SEEP/W analysis. The predictive equation could be used to design a flexible pavement system for effective subsurface drainage."--Abstract.
Book Synopsis Seasonal Instrumentation of SHRP Pavements by : Andrew G. Heydinger
Download or read book Seasonal Instrumentation of SHRP Pavements written by Andrew G. Heydinger and published by . This book was released on 1998 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seasonal Monitoring Program (SMP) instrumentation was installed in five sections at the Ohio Test Pavement in Delaware County, Ohio using Strategic Highway Research Program (SHRP) protocols developed for the Long-Term Pavement Performance (LTPP) group to the Federal Highway Administration (FHWA). The SMP instrumentation monitors pavements for temperature and pavement bases and subgrade soils for variations in moisture, temperature, and frost penetration. Time Domain Reflectometry (TDR) instrumentation was installed onsite in two sections for monitoring the moisture. Thermal conductivity sensors (TCS) were installed in four sections to measure soil moisture suction. Laboratory soil-water characteristic tests were conducted on remolded subgrade soil.--The TDR volumetric moisture contents typically varied by 10% to 15% from the driest to the wettest periods, but sometimes the variations were larger. The lower water contents occurred during the late winter/early spring months and the higher contents occurred during the late summer/early fall months. This reflects the climatic conditions that occurred. Some of the TDR moisture contents exceeded 40%, wich is greater than the soil porosity and therefore not possible. An equation for TDR volumetric water content developed for the FHWA yields lower water contents. Most of the thermal conductivity sensors are no longer within calibration. Data from sensors in calibration indicate very low matric suctions, which is consistent with high water contents. Soil-water characteristic relationships were obtained for the subgrade soil using trizxial and pressure plate apparatus. The relationships from the two tests are comparable. The soil exhibits some hysteresis when comparing drying and wetting curves.
Download or read book Focus written by and published by . This book was released on 1993 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Developments in In-situ Monitoring of Moisture in Pavement Structures by Time Domain Reflectometry (TDR) by : M. G. Stott
Download or read book Developments in In-situ Monitoring of Moisture in Pavement Structures by Time Domain Reflectometry (TDR) written by M. G. Stott and published by . This book was released on 1983 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sensing Issues in Civil Structural Health Monitoring by : Farhad Ansari
Download or read book Sensing Issues in Civil Structural Health Monitoring written by Farhad Ansari and published by Springer Science & Business Media. This book was released on 2005-07-14 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Civil infrastructure systems are generally the most expensive assets in any country, and these systems are deteriorating at an alarming rate. In addition, these systems have a long service life in comparison to most other commercial products. As well, the introduction of intelligent materials and innovative design approaches in these systems is painfully slow due to heavy relianceon traditional construction and maintenance practices, and the conservative nature of design codes. Feedback on the "state of the health" of constructed systems is practically nonexistent. In the quest for lighter, stronger and corrosion-resistant structures, the replacement of ferrous materials by high-strength fibrous ones is being actively pursued in several countries around the world, both with respect to the design of new structures as well as for the rehabilitation and strengthening of existing ones. In North America, active research in the design of new highway bridges is focused on a number of specialty areas, including the replacement of steel reinforcing bars in concrete deck slabs by randomly distributed low-modulus fibers, and the replacement of steel prestressing cables for concrete components by tendons comprising super-strong fibers. Research is also being conducted on using FRPs to repair and strengthen existing structures.
Book Synopsis Significant Findings from Full-scale Accelerated Pavement Testing by : Wynand JvdM. Steyn
Download or read book Significant Findings from Full-scale Accelerated Pavement Testing written by Wynand JvdM. Steyn and published by Transportation Research Board. This book was released on 2012 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: "TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 433: Significant Findings from Full-Scale Accelerated Pavement Testing documents and summarizes significant findings from the various experimental activities associated with full-scale accelerated pavement testing (f-sAPT) programs that have taken place between 2000 and 2011. The report also identifies gaps in knowledge related to f-sAPT and where future research may be needed. NCHRP Synthesis 433 is designed to expand the f-sAPT base of knowledge documented in NCHRP Syntheses 325 and 235, both with the same title of Significant Findings from Full-Scale Accelerated Pavement Testing. f-sAPT is the controlled application of a wheel loading, at or above the appropriate legal load limit, to a pavement system to determine pavement response in a compressed time period. The acceleration of damage is achieved by one or more of the following factors: increased repetitions, modified loading conditions, imposed climatic conditions, and thinner pavements with a decreased structural capacity which have shorter design lives"--
Author :American Association of State Highway and Transportation Officials Publisher :AASHTO ISBN 13 :156051423X Total Pages :218 pages Book Rating :4.5/5 (65 download)
Book Synopsis Mechanistic-empirical Pavement Design Guide by : American Association of State Highway and Transportation Officials
Download or read book Mechanistic-empirical Pavement Design Guide written by American Association of State Highway and Transportation Officials and published by AASHTO. This book was released on 2008 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of a Time Domain Reflectometry Technique for Seasonal Monitoring of Soil Moisture Content Under Road Pavement Test Sections by : Radu Andrei
Download or read book Evaluation of a Time Domain Reflectometry Technique for Seasonal Monitoring of Soil Moisture Content Under Road Pavement Test Sections written by Radu Andrei and published by . This book was released on 1994 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Time domain reflectometry (TDR) is a relatively new method for determining soil moisture content under road pavements from the measurement of the soil's dielectric permitivity. The purpose of this study is to evaluate the TDR method and equipment used for seasonal monitoring of soil moisture content. The study is based on data collected before and during the installation of instrumentation, as well as seasonal data collected over a period of three months in 1992 at a Strategic Highway Research Program test section in Boise, Idaho.
Book Synopsis Monitoring Seasonal Instrumentation and Modeling Climatic Effects on Pavements at the Ohio/SHRP Test Road by : Andrew G. Heydinger
Download or read book Monitoring Seasonal Instrumentation and Modeling Climatic Effects on Pavements at the Ohio/SHRP Test Road written by Andrew G. Heydinger and published by . This book was released on 2003 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long-Term Pavement Performance (LTPP) Seasonal Monitoring program (SMP) instrumentation was installed in pavement sections at the Ohio SHRP Test Road. The pavements are monitored for the seasonal variations of moisture, temperature and frost penetration. Data from the instrumentation is subjected to quality checks and prepared for uploading to the FHWA Information Management System (IMS). Findings from the testing are to be incorporated into future pavement design procedures.
Book Synopsis Development in In-SITU Monitoring of Moisture in Pavement Structures by Time Domain Reflectometry TDR. by :
Download or read book Development in In-SITU Monitoring of Moisture in Pavement Structures by Time Domain Reflectometry TDR. written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of a Long-term Monitoring System for Texas CRC Pavement Network by :
Download or read book Development of a Long-term Monitoring System for Texas CRC Pavement Network written by and published by . This book was released on 1988 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Damp Indoor Spaces and Health by : Institute of Medicine
Download or read book Damp Indoor Spaces and Health written by Institute of Medicine and published by National Academies Press. This book was released on 2004-10-01 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: Almost all homes, apartments, and commercial buildings will experience leaks, flooding, or other forms of excessive indoor dampness at some point. Not only is excessive dampness a health problem by itself, it also contributes to several other potentially problematic types of situations. Molds and other microbial agents favor damp indoor environments, and excess moisture may initiate the release of chemical emissions from damaged building materials and furnishings. This new book from the Institute of Medicine examines the health impact of exposures resulting from damp indoor environments and offers recommendations for public health interventions. Damp Indoor Spaces and Health covers a broad range of topics. The book not only examines the relationship between damp or moldy indoor environments and adverse health outcomes but also discusses how and where buildings get wet, how dampness influences microbial growth and chemical emissions, ways to prevent and remediate dampness, and elements of a public health response to the issues. A comprehensive literature review finds sufficient evidence of an association between damp indoor environments and some upper respiratory tract symptoms, coughing, wheezing, and asthma symptoms in sensitized persons. This important book will be of interest to a wide-ranging audience of science, health, engineering, and building professionals, government officials, and members of the public.
Book Synopsis Long Term Monitoring of Seasonal and Weather Stations and Analysis of Data from SHRP Pavements by :
Download or read book Long Term Monitoring of Seasonal and Weather Stations and Analysis of Data from SHRP Pavements written by and published by . This book was released on 2004 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monitoring and Evaluation of Fly Ash Stabilization Stabilized Subgrade Constructed by the WisDOT by : Tuncer Edil
Download or read book Monitoring and Evaluation of Fly Ash Stabilization Stabilized Subgrade Constructed by the WisDOT written by Tuncer Edil and published by . This book was released on 2010 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book LTTP 1998 Year in Review written by and published by . This book was released on 1999 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
