Download or read book Laboratory Subgrade Resilient Modulus Design Values for the State of Michigan written by Colin Patrick Sessions and published by . This book was released on 2008 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Backcalculated Subgrade Resilient Modulus Design Values for the State of Michigan written by Tyler Allen Dawson and published by . This book was released on 2008 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pavement Subgrade MR Design Values for Michigan s Seasonal Changes written by Gilbert Y. Baladi and published by . This book was released on 2009 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: The resilient modulus (MR) of roadbed soil plays an integral role in the design of pavement systems. Currently, the various regions of the Michigan Department of Transportation (MDOT) use different procedures to determine the MR values. Most of these procedures are applicable to the new Mechanistic-Empirical Pavement Design Guide (ME PDG) level 3 design only and the 1993 AASHTO design guide. Therefore, a consistent, uniform, and implementable procedure that meets the requirements of the M-E PDG for level 1, 2, and 3 designs and the 1993 AASHTO Design Guide was developed. In this study, the State of Michigan was divided into fifteen clusters where the physical and engineering characteristics of the soils were similar. The clusters were then divided into ninety nine areas to narrow down the ranges of the engineering and physical characteristics of the soils. Disturbed roadbed soil samples were collected from seventy five areas, and twelve undisturbed soil samples (Shelby tubes) were collected from areas with CL and SC roadbed soils. The soil samples were subjected to simple tests (moisture content, grain size distribution, and Atterberg limits when applicable), and cyclic load triaxial tests to determine the soils resilient modulus values. Predictive correlation equations were developed to estimate the MR values of the roadbed soil based on the results of the simple tests. Deflection data from Falling Weight Deflectometer (FWD) tests conducted throughout the state were obtained from MDOT. The deflection database consisted of hundreds of previous FWD tests that were conducted on various projects over the last 20+ years and eighty FWD tests conducted as part of this study. All FWD data files with sufficient data were analyzed to backcalculate the roadbed soil MR values. Comparison between the laboratory and the backcalculated MR values indicated that the two values are almost equal when the stress boundaries used in the laboratory tests matched those of the FWD tests. The report includes the recommended MR design values are provided on state map and in table format.
Download or read book Pavement Subgrade Resilient Modulus Design Values for Michigan s Seasonal Changes written by Gilbert Y. Baladi and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Bituminous Mixtures and Pavements VI written by A. Nikolaides and published by CRC Press. This book was released on 2015-07-28 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bituminous Mixtures and Pavements contains 113 accepted papers from the 6th International ConferenceBituminous Mixtures and Pavements (6th ICONFBMP, Thessaloniki, Greece, 10-12 June 2015). The 6th ICONFBMP is organized every four years by the Highway Engineering Laboratory of the Aristotle University of Thessaloniki, Greece, in conjunction with
Download or read book AASHTO Guide for Design of Pavement Structures 1993 written by American Association of State Highway and Transportation Officials and published by AASHTO. This book was released on 1993 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design related project level pavement management - Economic evaluation of alternative pavement design strategies - Reliability / - Pavement design procedures for new construction or reconstruction : Design requirements - Highway pavement structural design - Low-volume road design / - Pavement design procedures for rehabilitation of existing pavements : Rehabilitation concepts - Guides for field data collection - Rehabilitation methods other than overlay - Rehabilitation methods with overlays / - Mechanistic-empirical design procedures.
Download or read book Tunneling in Soft Ground Ground Conditioning and Modification Techniques written by Wen-Chieh Cheng and published by Springer. This book was released on 2018-07-20 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents new research studies dealing with the attempts made by the scientists and practitioners to address some key engineering issues in tunneling engineering, geotechnical engineering, and municipal sustainability issues that are becoming quite relevant in today's world. With high urbanization rates, advancement in technologies, difficulties in construction of subway tunnel in soft marine clay deposits, and severe ground subsidence due to excessive groundwater withdrawal pose many challenges in their management. Papers were selected from the 5th GeoChina International Conference 2018 – Civil Infrastructures Confronting Severe Weathers and Climate Changes: From Failure to Sustainability, held on July 23 to 25, 2018 in HangZhou, China.
Download or read book Laboratory Determination of Resilient Modulus for Flexible Pavement Design written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bearing Capacity of Roads Railways and Airfields Two Volume Set written by Erol Tutumluer and published by CRC Press. This book was released on 2009-06-15 with total page 1560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bearing Capacity of Roads, Railways and Airfields focuses on issues pertaining to the bearing capacity of highway and airfield pavements and railroad track structures and provided a forum to promote efficient design, construction and maintenance of the transportation infrastructure. The collection of papers from the Eighth International Conference
Download or read book An Improved Alternative Test Method for Resilient Modulus of Fine Grained Soils written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Flexible Pavement is usually composed of several asphalt concrete layers, a granular base course and a soil subgrade. For mechanistic design of pavement systems based on elastic theory a modulus of elasticity must be designated for each design layer including the soil subgrade. The resilient modulus is used to characterize the soil in pavement design. The resilient modulus is defined as [equation] Where [symbol] is the deviator stress or the difference between the axial and confining stress, and [symbol] is the recoverable axial strain. The standard procedure for obtaining [symbol] is a repeated load tri-axial test at a constant confining pressure. There is not a singular resilient modulus value for a particular soil but rather the modulus is a function of the stress state. The standard test produces a range of resilient modulus values in a series of stress conditions. The resilient modulus test is inherently complicated, time consuming, and expensive. For these reasons, most commercial and design laboratories will not conduct these tests but instead rely on empirical relationships. Therefore, it has been recommended that alternative tests be developed to approximate resilient modulus. The Alternative Test Method was developed to be a simple and effective way of determining resilient modulus. The ATM design was based on a single degree of freedom, lumped mass spring system in which a hammer of known mass falls onto a volume of soil. Originally, there appeared to be good correlation between the Alternative Test Method and the standard test method for obtaining resilient modulus. However, subsequent testing failed to produce consistent results or confirm the correlation. Improvements have been made to the ATM to improve the overall consistency of results and correlation with the standard resilient modulus test results. The improvements to the ATM device include a new, more consistent drop mechanism, better data acquisition software, and a new calculation method. ATM tests were conducted on 4 different soils from TDOT research sites. Standard tri-axial resilient modulus tests were conducted for comparison with ATM resilient modulus tests. The improved ATM appears to measure a material response that correlates reasonably well with the standard triaxial resilient modulus test results for those soils tested. Furthermore, the Improved ATM produces much more consistent results than the Original ATM. It is also believed that the limitations of the device are outweighed by its simplicity and commonality with other lab tests. Therefore, the improved Alternative Test Method for resilient modulus of fine grained soils is believed to be a viable alternative to the standard test method for obtaining resilient modulus values.
Download or read book State of the art on Pavement Overlay Design Procedures Annotated bibliography written by and published by . This book was released on 1983 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Test Reports written by Michigan. Dept. of State Highways. Testing Laboratory Section and published by . This book was released on with total page 1758 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NCHRP Web Doc 14 Laboratory Determination of Resilient Modulus for Flexible Pavement Design written by Transportation Research Board and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fourth International Conference Structural Design of Asphalt Pavements August 22 Through 26 1977 Horace H Rackham Building Lecture Hall the University of Michigan Ann Arbor Michigan U S A written by and published by . This book was released on 1979 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gravel Roads written by Ken Skorseth and published by . This book was released on 2000 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this manual is to provide clear and helpful information for maintaining gravel roads. Very little technical help is available to small agencies that are responsible for managing these roads. Gravel road maintenance has traditionally been "more of an art than a science" and very few formal standards exist. This manual contains guidelines to help answer the questions that arise concerning gravel road maintenance such as: What is enough surface crown? What is too much? What causes corrugation? The information is as nontechnical as possible without sacrificing clear guidelines and instructions on how to do the job right.
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:
