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 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 Engineering Geology for Society and Territory Volume 5 written by Giorgio Lollino and published by Springer. This book was released on 2014-08-25 with total page 1304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is one out of 8 IAEG XII Congress volumes, and deals with the theme of urban geology. Along with a rapidly growing world population, the wave of urban growth continues, causing cities to swell and new metropolitan centers to emerge. These global trends also open new ventures for underground city development. Engineering geology plays a major role in facing the increasing issues of the urban environment, such as: finding aggregates for construction works; providing adequate water supply and waste management; solving building problems associated to geological and geomorphological conditions; evaluating host rock conditions for underground constructions; preventing or mitigating geological and seismic hazards. Furthermore, this book illustrates recent advancements in sustainable land use planning, which includes conservation, protection, reclamation and landscape impact of open pit mining and alternative power generation. The Engineering Geology for Society and Territory volumes of the IAEG XII Congress held in Torino from September 15-19, 2014, analyze the dynamic role of engineering geology in our changing world and build on the four main themes of the congress: environment, processes, issues and approaches. The congress topics and subject areas of the 8 IAEG XII Congress volumes are: 1. Climate Change and Engineering Geology 2. Landslide Processes River Basins 3. Reservoir Sedimentation and Water Resources 4. Marine and Coastal Processes Urban Geology 5. Sustainable Planning and Landscape Exploitation 6. Applied Geology for Major Engineering Projects 7. Education, Professional Ethics and Public Recognition of Engineering Geology 8. Preservation of Cultural Heritage
Download or read book Comparative Analysis of the Micro Deval and Magnesium Sulfate Soundness Tests written by Priyantha Warnasuriya Jayawickrama and published by . This book was released on 2001 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Predicting Coarse Aggregate Performance Using the Micro Deval Test with Strength and Intrinsic Particle Property Tests written by Kevin William Hampel and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerous tests exist in the field of aggregate qualification which have little to no relation to field performance. Many aggregate sources have been restricted in their use due to non-conforming results from a test that has little relation to field performance. Many aggregates have also been used in projects because of acceptable test results but have resulted in premature and costly repairs. The aggregate industry needs a test that better correlates test results to field performance. Micro-Deval has shown potential as a good indicator for field performance. The micro-Deval wet abrasion test for coarse aggregate is studied to determine the ability of the test to predict field performance for various uses and mineralogical backgrounds when used in combination with other aggregate tests. Forty-two aggregates were obtained from across the United States and Canada with varying field performance ratings, uses, and mineralogy. General correlations are developed between the micro-Deval test and other laboratory tests as well as determining the ability of the micro-Deval test to predict field performance when used in combination with other laboratory tests
Download or read book Soundness Tests of Concrete Aggregates written by Waterways Experiment Station (U.S.) and published by . This book was released on 1958 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Prediction of Coarse Aggregate Performance by Micro Deval and Other Soundness Strength and Intrinsic Particle Property Tests written by Alexander Paul Lang and published by . This book was released on 2006 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research project concentrated on determining whether or not a correlation existed between laboratory aggregate tests and observed aggregate field performance. For this purpose, aggregate samples were collected from the majority of the U.S. states as well as several Canadian provinces and subjected to a variety of strength, soundness, and intrinsic particle property tests. Additionally, performance data on the aggregates was obtained by contacting multiple DOT's where aggregates were in use in several categories - hot-mix asphalt, portland cement concrete, base course, and open-graded friction course. Numerical and qualitative analyses were performed to evaluate the success of separating good performers from fair and poor performers using the micro-Deval test alone as well as the micro-Deval test combined with another test. Furthermore, attempts were made to determine if a correlation exists between any two tests.
Download or read book Aggregates written by Mick R. Smith and published by Geological Society of America. This book was released on 2001 with total page 368 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 Correlation of Sodium Sulfate Soundness of Coarse Aggregates with the Durability and Strength of Air entrained Concrete Made with the Aggregates written by and published by . This book was released on 1952 with total page 36 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 Standard Test Method for Resistance of Coarse Aggregate to Degradation by Abrasion in the Micro Deval Apparatus written by and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Micro deval Test for Evaluating the Quality of Fine Aggregate for Concrete and Asphalt written by C. A. Rogers and published by . This book was released on 1991 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sandy Materials in Civil Engineering written by Saeed Nemati and published by BoD – Books on Demand. This book was released on 2020-07-22 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the world moves further into urbanization, there is a greater need for construction materials to meet society’s needs. As natural resources become scarce, the use of recycled materials for construction purposes has become increasingly common. Over the past decade, there has been a significant increase in the utilization of recycled materials in the construction industry. This will result in substantial advantages in structure and infrastructure construction coupled with a reduction in the construction cost, as well as improving sustainability. However, significant development limitations and many relevant considerations must be addressed when using recycled materials in construction. This book introduces innovative and alternative construction materials used in civil engineering.
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 Stone Matrix Asphalt written by Krzysztof Blazejowski and published by CRC Press. This book was released on 2016-04-19 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the years since the development and subsequent success of Stone Matrix Asphalt (SMA), a plethora of articles have emerged, scattered throughout various publications. The time is right for a comprehensive resource that collects, examines, and organizes this information and makes it easily accessible. A compilation and distillation of the latest k
Download or read book Evaluation of the 4 cycle magnesium sulfate soundness test written by Chryssis George Papaleontiou and published by . This book was released on 1987 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents an evaluation of the 4-cycle magnesium sulfate soundness test to control quality of coarse aggregates for use in hot mix asphaltic concrete and seal coats. A total of 41 aggregates were tested for the purpose of this study in the laboratory and the behavior of eight of the aggregates was evaluated in the field by examining roadway performance. The soundness test was found to be the best method for predicting performance among specific gravity, absorption, aggregate durability index, freeze-thaw, Los Angeles abrasion, and a modified Texas wet ball mill (called Texas degradation) tests. Specific recommendations have been suggested to improve the soundness procedure. Also specification limits for hot mix and seal coat projects have been included.
