Evaluation Of Non Nuclear Methods For Compaction Control PDF Download
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Author | : Ellen M. Rathje |
Publisher | : |
Total Pages | : 129 |
Release | : 2006 |
Genre | : Pavements |
ISBN | : |
Download Evaluation of Non-nuclear Methods for Compaction Control Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 157 |
Release | : 2014 |
Genre | : Compacting |
ISBN | : |
Download Non-nuclear Methods for Compaction Control of Unbound Materials Book in PDF, ePub and Kindle
"Proper compaction of unbound materials, such as soils, aggregate, and recycled materials, is a critical component in the performance of highway pavements and embankments. The most commonly used device to test for proper compaction is the nuclear density gauge. However, due to the costs associated with regulatory compliance and radiation safety training, there is an increased effort to find acceptable non-nuclear devices. This synthesis documents information on national and international experience with non-nuclear devices and methods for measuring compaction of unbound materials. Information used in this study was gathered through a literature review, a survey of state departments of transportation (DOTs) and Canadian provincial transportation agencies, and interviews with selected state DOTs. Munir Nazzal, Ohio University, Athens, collected and synthesized the information and wrote the report. The members of the topic panel are acknowledged on the preceding page. This synthesis is an immediately useful document that records the practices that were acceptable with the limitations of the knowledge available at the time of its preparation. As progress in research and practice continues, new knowledge will be added to that now at hand."--Preface.
Author | : |
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Total Pages | : |
Release | : 2014 |
Genre | : Electronic book |
ISBN | : |
Download Non-Nuclear Methods for Compaction Control of Unbound Materials Book in PDF, ePub and Kindle
Author | : Ruth Elisheva Tobin |
Publisher | : |
Total Pages | : 210 |
Release | : 2006 |
Genre | : |
ISBN | : |
Download Assessment of Rapid, Non-nuclear Compaction Control Devices Book in PDF, ePub and Kindle
To ensure that compacted backfill performs as expected, compaction control is performed in the field by measuring the dry unit weight and moisture content of the compacted fill. The nuclear gauge is the most common device used to make these measurements because it is very rapid and thus does not delay the construction schedule. However, due to increased regulatory restrictions and growing concerns over the safety of using a device with a nuclear source, there is an increased effort to find a possible alternative to the nuclear gauge for compaction control. In this study, four devices were evaluated as potential replacements for the nuclear gauge. These devices include the Clegg Impact Hammer, the PANDA Dynamic Cone Penetrometer, the Moisture Density Indicator (MDI), and the Electrical Density Gauge (EDG). All the devices underwent laboratory testing conducted in large-scale soil specimens of poorly graded sand compacted to a target dry unit weight and moisture content. The MDI and EDG also underwent field testing at several different construction sites in central Texas. All testing includes comparisons between the results from the replacement devices and traditional compaction control devices. Analysis of the data revealed that, at this time, none of the four devices can be recommended to replace the nuclear gauge because they do not always accurately assess the compaction of the soil.
Author | : Brad W. Rister |
Publisher | : |
Total Pages | : 0 |
Release | : 2021 |
Genre | : Roads |
ISBN | : |
Download Non-nuclear Methods for Compaction Control of Unbound Soil and Granular Layers Book in PDF, ePub and Kindle
Author | : Lary R. Lenke |
Publisher | : |
Total Pages | : 58 |
Release | : 2001 |
Genre | : Soil compaction |
ISBN | : |
Download Evaluation of a Mechanical Stiffness Gauge for Compaction Control of Granular Media Book in PDF, ePub and Kindle
The use of nuclear methods for compaction control is increasingly problematic for state highway agencies. Regulatory and safety issues have prompted agencies such as the New Mexico State Highway and Transportation Department to look for non-nuclear alternatives for compaction control. This report describes the evaluation of one such commercially available device known as the GeoGauge. The GeoGauge measures soil stiffness, arguably, a much more viable engineering parameter than the moisture-density relations currently used. The GeoGauge was found to measure soil stiffness as advertised. Results relating moisture, density, and stiffness were found to be consistent with earlier research on compaction and mechanical strength of soils. However, because of the dynamic nature of the measurement obtained via the GeoGauge and associated boundary constraints, the ability to obtain a target value for stiffness in the laboratory has proved to be elusive. Because of the promising nature of the GeoGauge technology, and because it measures a true engineering mechanical property, a paradigm shift may be necessary for implementation for field compaction control. Future specifications for compaction using this technology may require specific controls of moisture and requirements concerning compaction equipment with stiffness monitoring, via the GeoGauge.
Author | : Travis Smith |
Publisher | : |
Total Pages | : 17 |
Release | : 1968 |
Genre | : Radioactive gages |
ISBN | : |
Download A Field Evaluation of Compaction Control with Nuclear Gages Book in PDF, ePub and Kindle
Author | : Charles S. Hughes |
Publisher | : |
Total Pages | : 24 |
Release | : 1968 |
Genre | : |
ISBN | : |
Download Methods of Compaction Control Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 178 |
Release | : 2010 |
Genre | : Pavements |
ISBN | : |
Download Evaluation of Intelligent Compaction Technology for Densification of Roadway Subgrades and Structural Layers Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : |
Release | : 1967 |
Genre | : |
ISBN | : |
Download Evaluation of the Nuclear Compaction Test Method, District 10 Book in PDF, ePub and Kindle