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Comparison Of The Falling Weight Deflectometer And The Dynaflect For Pavement Evaluation
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Book Synopsis Comparison of the Falling Weight Deflectometer and the Dynaflect for Pavement Evaluation by : Bary Eagleson
Download or read book Comparison of the Falling Weight Deflectometer and the Dynaflect for Pavement Evaluation written by Bary Eagleson and published by . This book was released on 1982 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: A literature search was made for the purpose of comparing deflection measuring devices. The Dynaflect, Road Rater, and Falling Weight Deflectometer (FWD) ranked highest when compared, using the criteria of cost, operational characteristics, and suitability. Field testing proved the Dynaflect and FWD were nearly equal in overall ability except in operational speed. Here the Dynaflect was superior primarily due to the automated sensor placement. The correlation coefficients obtained showed good agreement between the deflections measured by the two devices on all pavements tested except overlaid CRCP. This study indicates that there may be pavements and conditions for which the Dynaflect does not provide useful information or where present methods of data interpretation do not appear to be adequate.
Book Synopsis Dynamic Interpretation of Dynaflect and Falling Weight Deflectometer Tests on Pavement Systems by : Ko-Young Shao
Download or read book Dynamic Interpretation of Dynaflect and Falling Weight Deflectometer Tests on Pavement Systems written by Ko-Young Shao and published by . This book was released on 1986 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Dynaflect and the Falling Weight Deflectometer are commonly used for nondestructive testing of pavements. Although in both cases a dynamic load is imparted, the determination of the mechanical properties of the pavement is normally performed by using static analyses. In this study, the displacements obtained from dynamic analyses are compared to those provided by conventional static programs when the subbase is a homogeneous soil stratum of finite depth, resting on a much stiffer rock-like material and when the soil properties increase smoothly with depth, as is often the case.
Book Synopsis Evaluation of Pavement Deflection Measuring Equipment by :
Download or read book Evaluation of Pavement Deflection Measuring Equipment written by and published by . This book was released on 1987 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents the research performed on evaluation of pavement deflection equipment under Contract DTFH61-85-C-00115 for the Federal Highway Administration. The following devices were included in side-by-side field tests conducted in the Austin, Texas area during the week of August 11, 1986: the Benkelman Beam, C.E.B.T.P. Curviameter, Dynaflect, Dynatest Falling Weight Deflectometer (FWD), Kuab FWD, Phonix FWD, and the Road Rater. The report includes descriptions and comparisons of the devices through information obtained from a literature search, field tests and user survey conducted for this study. The side-by-side test program was performed over a broad range of pavement structures, including thick and thin flexible and rigid pavements, and composite pavements. The measured deflections were compared statistically. Mechanistic interpretations of the measured deflection basins were made and compared.
Book Synopsis The Falling Weight Deflectometer for Nondestructive Evaluation of Rigid Pavements by :
Download or read book The Falling Weight Deflectometer for Nondestructive Evaluation of Rigid Pavements written by and published by . This book was released on 1985 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynaflect Testing for Rigid Pavement Evaluation by :
Download or read book Dynaflect Testing for Rigid Pavement Evaluation written by and published by . This book was released on 1983 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interpreting Data from the Falling-weight Deflectometer by :
Download or read book Interpreting Data from the Falling-weight Deflectometer written by and published by . This book was released on 1994 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Correlation Study Among Falling Weight Deflectometer, Benkleman Beam and Dynaflect : Cost Comparison by : Khalil, Souad Mahmoud
Download or read book Correlation Study Among Falling Weight Deflectometer, Benkleman Beam and Dynaflect : Cost Comparison written by Khalil, Souad Mahmoud and published by . This book was released on 1988 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: In november 1987, a report was prepared for a study of three pavement deflection devices tested side-by-side for repeatability, precision and uniformity of measurements as well as their correlation to each other. the three devices included the falling weight deflectometer, the benkleman beam and the dynaflect. (see irrd 807104). this addendum report summarizes the comparative costs of gathering equivalent data with each of these devices. results indicate that the relative productivity of the falling weight deflectometer and the dynaflect compared to the benkleman beam is 2.16:1 and 1.59:1 respectively.
Book Synopsis Correlation Study Among Falling Weight Deflectometer, Benkleman Beam [and] Dynaflect by : L. Begin
Download or read book Correlation Study Among Falling Weight Deflectometer, Benkleman Beam [and] Dynaflect written by L. Begin and published by . This book was released on 1987 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes a study undertaken to compare three pavement deflection devices for repeatability, precision and uniformity of measurements as well as their correlation to each other. the three devices tested were the falling weight deflectometer, the benkleman beam and the dynaflect. the results indicate that deflection measurements taken by these devices correlated very well. of particular note, the falling weight deflectometer had the smallest coefficient of variation in repeatability tests and had the shortest test time per measurement.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1983 with total page 1368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Structural Evaluation Methodology for Pavements Based on Dynamic Deflections by : Waheed Uddin
Download or read book A Structural Evaluation Methodology for Pavements Based on Dynamic Deflections written by Waheed Uddin and published by . This book was released on 1985 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of the Lane-Wells Dynaflect, Final Report by : Ernest Zube
Download or read book Evaluation of the Lane-Wells Dynaflect, Final Report written by Ernest Zube and published by . This book was released on 1968 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Highway Engineering by : Athanassios Nikolaides
Download or read book Highway Engineering written by Athanassios Nikolaides and published by CRC Press. This book was released on 2014-11-24 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt: An International Textbook, from A to ZHighway Engineering: Pavements, Materials and Control of Quality covers the basic principles of pavement management, highlights recent advancements, and details the latest industry standards and techniques in the global market. Utilizing the author's more than 30 years of teaching, researching, and consulting e
Book Synopsis Temperature Differential Effect on the Falling Weight Deflectometer Deflections Used for Structural Evaluation of Rigid Pavements by : Gustavo E. Morales-Valentin
Download or read book Temperature Differential Effect on the Falling Weight Deflectometer Deflections Used for Structural Evaluation of Rigid Pavements written by Gustavo E. Morales-Valentin and published by . This book was released on 1987 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nondestructive Testing of Pavements and Backcalculation of Moduli by : Albert Jasper Bush
Download or read book Nondestructive Testing of Pavements and Backcalculation of Moduli written by Albert Jasper Bush and published by ASTM International. This book was released on 1989 with total page 701 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Comparison of the Rolling Weight Deflectometer with the Falling Weight Deflectometer by : RN. Stubstad
Download or read book A Comparison of the Rolling Weight Deflectometer with the Falling Weight Deflectometer written by RN. Stubstad and published by . This book was released on 2000 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: A prototype Rolling Weight Deflectometer (RWD) has been designed and produced for testing airfield pavements. The RWD is a trailer mounted device that continuously measures maximum pavement deflections under a load wheel under moving conditions. The RWD was originally designed to perform measurements at a maximum speed of 10 kph (6 mph) with load of up to 222 kN (50,000 lb.). The RWD was recently modified to collect deflections at an increased speed of 32 kph (20 mph) under a 40 kN (9000 lb.) wheel load. It is anticipated that a highway version of the RWD will be produced jointly by Quest Integrated and Dynatest Consulting, Inc., within the next two years that will collect deflections at highway speeds of 70 to 80 kph (45 to 50 mph).
Book Synopsis Nondestructive Testing of Pavements and Backcalculation of Moduli by : Shiraz D. Tayabji
Download or read book Nondestructive Testing of Pavements and Backcalculation of Moduli written by Shiraz D. Tayabji and published by ASTM International. This book was released on 2000 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: As with the previous two symposia, the 32 papers from the June/July, 1999, Seattle symposium present advances in the nondestructive testing of pavements using conventional falling weight deflectometer techniques and other promising techniques such as ground penetrating radar, rolling weight deflecto
Author :ASTM Committee D-18 on Soil and Rock. Subcommittee D-4 on Road and Paving Materials Publisher :ASTM International ISBN 13 :0803118651 Total Pages :528 pages Book Rating :4.8/5 (31 download)
Book Synopsis Nondestructive Testing of Pavements and Backcalculation of Moduli by : ASTM Committee D-18 on Soil and Rock. Subcommittee D-4 on Road and Paving Materials
Download or read book Nondestructive Testing of Pavements and Backcalculation of Moduli written by ASTM Committee D-18 on Soil and Rock. Subcommittee D-4 on Road and Paving Materials and published by ASTM International. This book was released on 1994 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of June 1993 international symposium held in Atlanta, Georgia, called specifically to develop and standardized evaluation procedures for non-destructive methods of testing pavements. The 29 papers discuss analytical models and techniques, measurement and calculation techniques in the field and laboratory, problems and errors associated with backcalculation methods and design parameters, and testing for other pavement uses. Also includes a history of the quest for a standard and the status of that effort. Reproduced from typescripts. Annotation copyright by Book News, Inc., Portland, OR
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