Download or read book Compaction Comparison Testing Using a Modified Impact Soil Tester and Nuclear Density Gauge written by RA. Erchul and published by . This book was released on 1999 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this paper is to compare test results of a modified Impact Soil Tester (IST) on compacted soil with data obtained from the same soil using a nuclear density gauge at the U.S. Army Corp of Engineer's Buena Vista Flood Wall project in Buena Vista, Virginia. The tests were run during construction of the earth flood wall during the summer of 1996. This comparison testing demonstrated the credibility of the procedure developed for the IST as a compaction testing device. The comparison data was obtained on a variety of soils ranging from silty sands to clays. The Flood Wall comparison compaction data for 90% Standard Proctor shows that the results of the IST as modified are consistent with the nuclear density gauge 89 percent of the time for all types of soil tested. However, if the soils are more cohesive then the results are consistent with the nuclear density gauge 97 percent of the time. In addition these comparison tests are in general agreement with comparison compaction testing using the same testing techniques and methods on compacted backfill in utility trenches conducted earlier for the Public Works Department, Chesterfield County, Virginia.
Download or read book Field Instrumentation for Soil and Rock written by Gary N. Durham and published by ASTM International. This book was released on 1999 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: These 28 papers presented at the American Society for Testing and Materials symposium held in June 1998 are organized by the major session topics of instrumentation associated with: soil structure interaction, monitoring landfills, and monitoring settlement and stability; and field data acquisition
Download or read book Field Compaction Tests with Impact Compactor written by Waterways Experiment Station (U.S.) and published by . This book was released on 1955 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Comparison of Density Based and Modulus Based In Situ Test Measurements for Compaction Control written by Christopher L. Meehan and published by . This book was released on 2012 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents and compares the results from a series of in situ density-based and modulus-based compaction control tests that were conducted during construction of a coarse-grained soil embankment. To simulate current construction practices as closely as possible, these in situ tests were performed on an embankment that was constructed and compacted by a vibratory smooth drum roller in a series of lifts. During construction of the test embankment, the compaction process was monitored using the nuclear density gauge device and a number of alternative modulus-based devices, including the lightweight deflectometer, the dynamic cone penetrometer, and the soil stiffness gauge. Comparison of the in situ test results illustrates that point-to-point variability in measured values is quite common for each of these test devices, to varying degrees for the different devices that were examined. Consistent increases in measured soil properties from pass-to-pass of the compactor are considered critical for proper control of the compaction process, with some devices faring better than others in this area of performance. The measured modulus values correlated poorly to the nuclear density gauge dry unit weights, and also correlated poorly with other measured moduli when the results from different devices were compared. This lack of agreement was likely caused by a variety of factors including: variations in the magnitude of strain and rate of strain application between the different modulus-based devices, variations in the tested volume between the different devices, and variations in the local moisture content and matrix suction conditions. Finally, the effect of soil moisture content was shown to be critically important when interpreting the results from modulus-based tests, and the utility of multiple regression analyses was explored for including this effect.
Download or read book Comparisons of Field Density Test Results written by TJ. Kaderabek and published by . This book was released on 1979 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the course of a large earthwork project in Georgia, six test fills were constructed to study placement and compaction procedures. Several density testing techniques used in the quality control testing program were compared. A laboratory compaction test was performed at each field density test location to eliminate the need to select the appropriate compaction curve from a family of curves. More than 180 nuclear density, sand cone, and laboratory compaction tests were compared. Two soil types, both sands, were involved in the test program. The effects of gradation, compaction, mold size, depth of density test, and type of nuclear device were investigated. Variables in construction procedures included type of equipment, number of passes, lift thickness, and soil type. Following a statistical evaluation it was concluded that (1) oven moisture contents were consistently lower than nuclear moistures, (2) nuclear wet densities were always less than sand cone densities, and (3) the sand cone density test method yielded a 5% higher compaction when compared to the nuclear test method.
Download or read book Constructing and Controlling Compaction of Earth Fills written by Donald W. Shanklin and published by ASTM International. This book was released on 2000 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Presents 22 papers, from the July 1999 symposium, written on the use of various standardized methods for specifying and controlling the compaction of soil for engineered constructed earth fills. Perspectives include the historical background, current state-of-the- art practices, case histories of challenging situations, concerns regarding appropriate design parameters for compaction control, and new methods to evaluate soil compaction and related qualities. Annotation copyrighted by Book News, Inc., Portland, OR.
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
Download or read book Compaction Criteria for Metal and Nonmetal Tailings written by Christine M. K. Boldt and published by . This book was released on 1984 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Civil Engineer s Reference Book written by L S Blake and published by CRC Press. This book was released on 1994-03-21 with total page 1242 pages. Available in PDF, EPUB and Kindle. Book excerpt: After an examination of fundamental theories as applied to civil engineering, authoritative coverage is included on design practice for certain materials and specific structures and applications. A particular feature is the incorporation of chapters on construction and site practice, including contract management and control.
Download or read book Methods of testing soils for engineering purposes Method 5 2 1 Soil compaction and density tests Determination of the dry density moisture content relation of a soil using modified compactive effort 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 Use of Clegg Hammer for Compaction Control written by Sedat Gulen and published by . This book was released on 1990 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Methods of testing soils for engineering purposes Method 5 2 1 Soil compaction and density tests Determination of the dry density or moisture content relation of a soil using modified compactive effort 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 Board of Contract Appeals Decisions written by United States. Armed Services Board of Contract Appeals and published by . This book was released on 1978 with total page 1744 pages. Available in PDF, EPUB and Kindle. Book excerpt: The full texts of Armed Services and othr Boards of Contract Appeals decisions on contracts appeals.
Download or read book Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort 56 000 Ft lbf written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparisons of Vibrated Density and Standard Compaction Tests on Sands with Fines written by Frank C. Townsend and published by . This book was released on 1972 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: Generally, two laboratory test methods, relative density and standard compaction (impact), are used in establishing density requirements for the placement of embankment materials. The relative density test method is specified for cohesionless soils, generally when fines do not constitute more than 5-12 percent by weight, while the standard compaction test is for cohesive soils. However, for sandy soils containing varying amounts of fines, selection is often based upon the test method considered appropriate to the material. This study was an investigation of various criteria for assisting in compaction test method selection for cohesionless soils with fines.
Download or read book Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort 56 000 Ft lbf ft3 2 700 KN m m3 1 written by ASTM Committee D-18 on Soil and Rock and published by . This book was released on 2009 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1984 with total page 1464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
