Download or read book Evaluation of Pavement Subsurface Drainage Conditions in Ohio written by Kamran Majidzadeh and published by . This book was released on 1976 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Roadway Subsurface Drainage on Rural Routes written by Roger Green and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Excess moisture has been identified as a cause for stripping, raveling, debonding, and rutting in flexible pavement [ODOT, 2016a]. The Ohio Department of Transportation (ODOT) has been getting substantially less than the expected 15 year service life after a resurfacing project, particularly on those routes without drainage. Providing drainage may help mitigate the premature failures ODOT is seeing on their rural routes. Section 205 of the 2016 Ohio DOT Pavement Design Manual (PDM) requires subsurface drainage on all new projects and recommends aggregate drains be used with bituminous surface treated and aggregate shoulders. Installing aggregate drains by contract during resurfacing has become costly for ODOT. This project was completed in two phases. The first phase focused on current practices of drainage installation on rural routes and on identifying available equipment for use by county crews. Phase 2 included a field evaluation to evaluate cost effective options for drainage incorporating the findings and recommendations from Phase 1. The Phase 1 evaluation identified aggregate drains as the appropriate drainage method and the rock saw as the most efficient equipment for aggregate drain installation. In Phase 2 aggregate drains were constructed by ODOT's Marion County personnel in forty test sections on State Route 529 using the rock saw and the backhoe. Drains were not installed in four sections which served as control sections, for a total of forty-four sections. Aggregate drains were installed using backfill meeting AASHTO #8, #57, and #4 gradations as well as a porous concrete backfill. Other factors evaluated included varied spacing between drains, trenches with and without fabric, compacted and un-compacted backfill, and narrow and wide trenches. Dynamic cone penetrometer testing was conducted before and after the monitoring period. The sections were monitored every four months for a one year period by testing with the falling weight deflectometer and measuring in-situ volumetric moisture.
Download or read book Drainage Improvement Benefit Assessment Methods and Subsurface Drainage Practices in Ohio written by Bruce Collins Atherton and published by . This book was released on 1999 with total page 1140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Public Roads written by and published by . This book was released on 1978 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Prefabricated Edge Drains PED in Ohio written by Andrew G. Heydinger and published by . This book was released on 1998 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was conducted to evaluate prefabricated edge drain (PED) construction procedures and to assess the condition of PEDs installed in Ohio between 1988 and 1993. The research included a survey of department of transportation engineers in other states and Ohio Department of Transportation (ODOT) design and construction engineers. The condition of PEDs installed in Ohio was evaluated at six sites throughout Ohio by excavating short sections of PEDs for visual inspections and permittivity testing. A video borescope with a 25-ft (7.6-m) long fiber optic cable was used to investigate the in situ condition of the PED. Permittivity testing of the PED fabric was conducted in the field on PED samples removed from the excavations. Specifications for installing PED vary considerably among the states using PED. ODOT current specifications require placing the PED on the outside of the trench and using a granular backfill. Problems that have been reported include deformation of the PED core, compression of the filter fabric into the core, blinding and clogging of the filter, sedimentation of the core and blockage of drainage outlets. In most cases, the problems were considered minor. The problems cited above were observed at all six sites during the video borescope inspections. In spite of problems with the filter fabric, the permittivity of the filter fabric was not significantly reduced. The problems with PED result in reduced drainage capacity. However, the PEDs are effective in providing drainage provided the drainage outlets are not blocked. Construction specifications should be observed to minimize problems. Maintenance personnel should inspect drainage outlets on a regular basis to ensure that the outlets are not blocked.
Download or read book Evaluating Roadway Subsurface Drainage Practices written by Halil Ceylan and published by . This book was released on 2013 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: The bearing capacity and service life of a pavement is affected adversely by the presence of undrained water in the pavement layers. In cold winter climates like in Iowa, this problem is magnified further by the risk of frost damage when water is present. Therefore, well-performing subsurface drainage systems form an important aspect of pavement design by the Iowa Department of Transportation (DOT). However, controversial findings are also reported in the literature regarding the benefits of subsurface drainage. The goal of this research was not to investigate whether subdrains are needed in Iowa pavements, but to conduct an extensive performance review of primary interstate pavement subdrains in Iowa, determine the cause of the problem if there are drains that are not functioning properly, and investigate the effect of poor subdrain performance due to improper design, construction, and maintenance on pavement surface distresses, if any. An extensive literature review was performed covering national-level and state-level research studies mainly focusing on the effects of subsurface drainage on performance of asphalt and concrete pavements. Several studies concerning the effects of a recycled Portland cement concrete (RPCC) subbase on PCC pavement drainage systems were also reviewed. A detailed forensic test plan was developed in consultation with the project technical advisory committee (TAC) for inspecting and evaluating the Iowa pavement subdrains. Field investigations were conducted on 64 selected (jointed plain concrete pavement/JPCP and hot-mix asphalt/HMA) pavement sites during the fall season of 2012 and were mainly focused on the drainage outlet conditions. Statistical analysis was conducted on the compiled data from field investigations to further investigate the effect of drainage on pavement performance. Most Iowa subsurface drainage system outlet blockage is due to tufa, sediment, and soil. Although higher blockage rates reduce the flow rate of water inside outlet pipes, it does not always stop water flowing from inside the outlet pipe to outside the outlet pipe unless the outlet is completely blocked. Few pavement surface distresses were observed near blocked subsurface drainage outlet spots. More shoulder distresses (shoulder drop or cracking) were observed near blocked drainage outlet spots compared to open ones. Both field observations and limited performance analysis indicate that drainage outlet conditions do not have a significant effect on pavement performance. The use of RPCC subbase in PCC pavements results in tufa formation, a primary cause of drainage outlet blockage in JPCP. Several useful recommendations to potentially improve Iowa subdrain performance, which warrant detailed field investigations, were made.
Download or read book Selected Library Acquisitions written by United States. Department of Transportation and published by . This book was released on with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Construction and Rehabilitation of Concrete Pavement written by American Concrete Pavement Association and published by . This book was released on 1984 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Subsurface Drainage on Performance of Asphalt and Concrete Pavements written by Kathleen Theresa Hall and published by Transportation Research Board. This book was released on 2003 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1977-05 with total page 1138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geotechnical abstracts written by and published by . This book was released on 1978 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Drainage Evaluation at the U S 50 Joint Sealant Experiment written by and published by . This book was released on 2007 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Thesis presents an investigation of the subsurface drainage features of the test pavement at the United States (U.S.) Route 50 joint sealant experiment near Athens, Ohio. The pavement incorporates a 4-in. thick open-graded base, whose design is assessed using the software DRIP 2.0, distributed by the Federal Highway Administration. It is found that the specified base thickness and permeability combination do not meet federal guidelines, evidently because no design calculations had been performed prior to construction. A field inspection of the test pavement drainage features revealed that these had received very scant to no maintenance. Drainage outlets were unmarked, overgrown by vegetation, difficult to find or sometimes missing, often clogged and occasionally damaged. A literature review indicated that such problems are endemic in many states and point to an under appreciation of proper drainage in concrete pavements. A review of the structural performance of the test pavement found no obvious correlation with the condition of a variety of sealant treatments applied during the experiment.
Download or read book Performance Evaluation of Open Graded Base Course with Doweled and Non doweled Transverse Joints on USH 18 151 STH 29 and USH 151 written by Robert L. Schmitt (Ph.D.) and published by . This book was released on 2010 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluating Roadway Subsurface Drainage Practices written by Dario J. Canelon and published by . This book was released on 2009 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project involved the evaluation of some configurations of pavement subsurface drainage systems, including the conventional edgedrain system, and two centerline configurations, at 2-foot and 4-foot depths. Testing of these configurations took place on a newly constructed eight-mile section of Nobles County CSAH 35 near Worthington. Drained roadway sections were 500 feet long for each drainage treatment. Each of the treatments was replicated six times, with the outflow for each replication outlet through a tipping-bucket flow monitoring system. The experimental design tested both the drain configuration and the effect of relative elevation of the roadway. Measurement of relative wetness of the pavement base and subgrade materials for each of the drainage treatments was conducted with a Geonics electromagnetic induction instrument (EM38). Data were collected from March 2006 until November 2008, with breaks during the winter periods. Statistical analyses were conducted to look for treatment effects, using both drained volumes as well as the EM38 measurements as measures of drain efficacy. Additional project work included a finite element analysis of the drainage configurations, EM38 evaluation of drainage effectiveness of an open-graded base construction for streets in the city of Worthington, and evaluation of the potential drain plugging effect of crushed concrete fill.
Download or read book Road and Airport Pavement Response Monitoring Systems written by Vincent C. Janoo and published by . This book was released on 1992 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index written by and published by . This book was released on 1992 with total page 1138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
