Download or read book Evaluation of Structural Layer Coefficients for Asphalt Emulsion Aggregate Mixtures written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of Structural Layer Coefficients for Open Graded Asphalt Emulsion Mixes written by David Russell Hatch and published by . This book was released on 1977 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes the development of structural layer coefficients for open graded asphalt emulsion surfacing layers which can be used with the AASHO pavement design method, as modified by the U.S. Forest Service, Region 6. A field survey conducted to document the history, performance and material characteristics of in-service pavements is described and this information together with a survey of experienced users is used to determine the most important factors affecting the design thickness for the pavements. Traffic, base type, temperature and drainage design all are important to determine the pavement thickness. Two procedures used for the development of structural layer coefficients are described. The first procedure uses the information from the performance survey and the AASHO pavement design method to determine appropriate layer coefficients for three in-service roads. The second procedure is a fundamental approach based on layered elastic theory and using information from the field survey. This procedure is useful for the analysis of the pavement in the fully cured or partially cured state. Although a conservative approach was used for both procedures, the developed layer coefficients are greater than the values used in the current design procedure. This indicates that modification of the current values is appropriate. A tabled presentation of layer coefficients is proposed which considers only those factors found to be important for the determination of design thicknesses. The importance of good quality control and specifications is stressed and a listing of current specifications is included.

Download or read book Properties of Marginal Aggregates Treated with Asphalt Emulsion written by Gary L. Evans and published by . This book was released on 1980 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this report is to address the problem of supplying construction aggregates to Oregon's coastal areas that are currently, or will in the near future, be deficient of good quality materials. This is done primarily by studying methods of utilizing marginal aggregates that are abundantly available in the deficient areas. The methods considered include various beneficiation procedures, such as admixture stabilization, pretreatment, blending, and reinforcement. Beneficiation by admixture stabilization is further analyzed by an experimental program designed to evaluate properties of marginal aggregates treated with asphalt emulsion. The aggregates tested include a high quality basalt, two marine basalts, a sandstone, and a fine grained dune sand. Mix properties evaluated include diametral resilient modulus, split tensile strength, and diametral fatigue life for both unconditioned specimens and specimens conditioned by moisture exposure. Layered elastic system pavement design principles are then implemented with the dynamic test results obtained from the study aggregates and with typical properties of a hot mix asphalt concrete to determine required pavement thicknesses. From this information, layer equivalencies are determined for comparing required pavement thicknesses of emulsion treated marginal aggregates with a hot mix asphalt concrete. Structural layer coefficients are then derived for use in standard pavement design methods. Finally, conclusions are given for utilization of the marginal aggregates treated with asphalt emulsion and recommendations given for additional research.

Download or read book Structural Coefficients for New Asphalt Mixtures written by David H. Timm and published by . This book was released on 2005 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Layer Coefficients for New and Reprocessed Asphaltic Mixes written by and published by . This book was released on 2000 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation Into Deriving Layer Coefficients for New and Reprocessed Asphalt Mixtures written by John Donald Christensen and published by . This book was released on 1999 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estimation of AASHTO Layer Coefficients for Bituminous Mixes written by Michael Eugene Ayers and published by . This book was released on 1993 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: The resilient modulus test procedure, as specified by the Strategic Highway Research Program (SHRP) P07 protocol, is used to evaluate Oklahoma Department of Transportation (ODOT) types A, B, and G asphalt concrete mixes. Structural layer coefficients are estimated based on the resilient modulus test results. A full face dynamic compaction apparatus was designed and constructed to allow fabrication of large aggregate asphalt concrete samples. The dynamic compaction apparatus is compared with the Marshall and gyratory compaction techniques. A comparison of 4-, 6-, and 8-in. (10.2-, 15.2-, and 20.4-cm) specimens is presented as is a thorough statistical analysis of the material and test variability.

Download or read book Extending Aggregate Resources written by W. W. Hotaling and published by ASTM International. This book was released on 1982 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings Association of Asphalt Paving Technologists Technical Sessions written by Association of Asphalt Paving Technologists and published by . This book was released on 1985 with total page 770 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1984 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book HRIS Abstracts written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1987 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Resilient Moduli and Layer Coefficients of Aggregate Materials for AASHTO Flexible Pavement Design written by Ping Tian and published by . This book was released on 1998 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Basic Asphalt Emulsion Manual written by Asphalt Institute and published by . This book was released on 1979 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluating Asphalt Emulsion aggregate Mixtures written by R.A. Jimenez and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of Structural Layer Coefficients of Crumb Rubber modified Asphalt Mixes from In situ Deflection Tests written by Affan Habib and published by . This book was released on 1997 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report includes the results of testing Crumb Rubber Modified (CRM) asphalt to quantify the layer coefficient values for CRM mixes. Several test sections were selected from recently constructed CRM pavement. The Falling Weight Deflectometer (FWD) data were collected at 15 meter intervals on each test section during a one month period.

Download or read book Implication of Aggregates in the Design Construction and Performance of Flexible Pavements written by Hans G. Schreuders and published by ASTM International. This book was released on 1989 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structural Evaluation of Asphalt aggregate Cold Mix Bases written by I. Ishai and published by . This book was released on 197? with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: