Download or read book Comparative Evaluation of Aggregate Toughness Abrasion Resistance and Soundness Tests Using South Carolina Aggregates written by Jonathan Edlinski and published by . This book was released on 2005 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of South Carolina Aggregate Durability Properties written by Prasada Rao Rangaraju and published by . This book was released on 2005 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Tests for Toughness Abrasion Resistance and Durability Soundness of Coarse Aggregates written by Y. Wu and published by . This book was released on 1999 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many tests have been developed to empirically characterize aggregate without necessarily strong relationships with the performance of final products incorporating these aggregates. This seems to be particularly true for "toughness and abrasion resistance" and "durability and soundness." Toughness/abrasion resistance and durability/soundness of aggregate are correlated, but represent resistance to degradation when subject to mechanical forces and weathering, respectively. A literature review identified five toughness/abrasion resistance and four durability/soundness test procedures. Sixteen aggregates with a wide range of properties were tested with eight of the identified test procedures. Results from the tests and test precisions were compared.

Download or read book Aggregate Tests Related to Asphalt Concrete Performance in Pavements written by Prithvi S. Kandhal and published by Transportation Research Board. This book was released on 1998 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aggregate Toughness abrasion Resistance and Durability soundness Tests Related to Asphalt Concrete Performance in Pavements written by Yiping Wu and published by . This book was released on 1996 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aggregate Toughness abrasion Resistance and Durability soundness Tests Related to Asphalt Concrete Performance in Pavements written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of Testing Methods to Determine Long term Durability of Wisconsin Aggregates written by and published by . This book was released on 2013 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Approximately 10 to 11 million tons of aggregates are utilized in transportation infrastructure projects in Wisconsin annually. The quality of aggregates has a tremendous influence on the performance and durability of roadways and bridges. In this Phase II research study, detailed statistical analyses were performed on over 1,000 sets of historical aggregate test results and the experimental results from the Phase I study. Test results from other states were analyzed as well. Aggregate tests were performed on 12 known marginal or poor Wisconsin aggregates to specifically address test performance of such aggregates. Selected aggregates were scanned using X-ray computed tomography to assess the effects of freeze-thaw and sodium sulfate exposure on the internal void system. The results of multi-parameter logistic regression analyses show that the pass/fail outcomes of the Micro-Deval test can be predicted when LA abrasion, absorption, and sodium sulfate soundness test results are known. The unconfined freeze-thaw test outcomes cannot be predicted from results of other tests (not correlated). Therefore, the unconfined freeze-thaw test should be part of any test protocol as it measures an aggregate characteristic that cannot be obtained from other tests. The percentiles associated with any proposed acceptance threshold limits for various aggregate tests should be determined using the statistical data provided.

Download or read book Comparative Analysis of Coarse Surfacing Aggregate Using Micro Deval L A Abrasion and Sodium Sulfate Soundness Tests written by Eli Cuelho and published by . This book was released on 2007 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aggregates used in the construction of roads must be durable, abrasion resistant, and freeze thaw resistant in order to perform well in pavement or as base course. The objective of this study was to investigate whether the Micro Deval test will provide better, timelier, and more repeatable information about the quality of an aggregate than the Sodium Sulfate Soundness test. This objective was met by (1) conducting a thorough literature review, (2) testing a variety of soils from across Montana, and (3) analyzing these results to reveal potential trends. The literature review indicated that the Micro Deval test has good repeatability characteristics, and that it correlates well to field performance. Laboratory tests (Micro Deval, L.A. Abrasion, and Sodium Sulfate) were conducted on a variety of soil types to examine the repeatability of each test method, and to examine how well the methods correlate with each other in terms of predicting aggregate durability and degradation. Test results were normalized to facilitate direct comparisons between the three methods. Linear regression of the data points and corresponding confidence intervals were plotted to qualitatively assess agreement or disagreement between test methods. The authors concluded that the Micro Deval test is a suitable replacement for the Sodium Sulfate test as the primary method for evaluating aggregate durability, with limitations. Because there were some inconsistent durability determinations between test methodologies, the authors recommend that the Micro-Deval test results be further supported by a second aggregate durability test whenever the Micro Deval results fall between the cutoff value and plus 30 percent of the cutoff value. In other words, when the Micro Deval test result for an aggregate is between 18 and 24 percent loss, a second test using an alternate method is recommended before any conclusions are made regarding the durability or quality of an aggregate.

Download or read book Report written by and published by . This book was released on 1964 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report written by American Association of State Highway Officials. Committee on Highway Research Activities and published by . This book was released on 1932 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Crushed Stone Journal written by and published by . This book was released on 1959 with total page 444 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 1926 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Superpave Mix Design written by Asphalt Institute and published by . This book was released on 2001-01-01 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Highway Research Abstracts written by and published by . This book was released on 1992 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Aggregates Handbook Second Edition written by National Stone, Sand & Gravel Association and published by . This book was released on 2013-03-20 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aggregate Quality Requirements for Pavements written by E. Tutumluer and published by . This book was released on 2018 with total page 92 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.