WorldCat Identities

Geotechnical and Structures Laboratory (U.S.)

Overview
Works: 1,543 works in 1,733 publications in 1 language and 2,238 library holdings
Genres: Classification  Academic theses 
Classifications: TA7,
Publication Timeline
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Most widely held works about Geotechnical and Structures Laboratory (U.S.)
 
Most widely held works by Geotechnical and Structures Laboratory (U.S.)
Long-term performance evaluation of asphalt surface treatments : product placement by John F Rushing( Book )

5 editions published between 2010 and 2013 in English and held by 9 WorldCat member libraries worldwide

The U.S. Army Engineer Research and Development Center recently began a research project to evaluate pavement preservation techniques for asphalt pavements on Army airfields. Three field sites were selected for testing. Field sites represented the following climatic regions: hot and wet, hot and dry, and cold. Each of the test sites was on a taxiway or parking apron pavement on an Army airfield. Commercially available products marketed for pavement preservation were placed at each site. Existing pavements were in good condition, and all exhibited only minor longitudinal or transverse cracking and limited weathering. Preliminary data were collected by evaluating pavement surface properties and by extracting pavement cores prior to placement of the surface treatment. Additional tests were performed after product placement. Annual evaluations will provide comparable data to quantify the benefit of the treatment based on its ability to reduce environmental distresses. This report provides information on the products placed at each site as well as pavement conditions before product placement
Laboratory characterization of near-surface soils from the AAA Iraq Site( Book )

4 editions published between 2009 and 2010 in English and held by 8 WorldCat member libraries worldwide

Controlling sulfate attack in Mississippi Department of Transportation structures by R. Charles A Weiss( Book )

2 editions published between 2009 and 2010 in English and held by 8 WorldCat member libraries worldwide

At some construction sites in Mississippi, deterioration of concrete in contact with the surrounding soil could be related to the high sulfate content of the adjacent soils. Studies dating to 1966 have documented sulfate attack associated with specific types of sulfide or sulfate-rich soils. Future highway-related construction must include specified procedures and materials that will ensure the service life of concrete construction is not reduced by such aggressive soils. In this project, three portland cements and five pozzolans, which can be used as cement replacements, were investigated to determine which of these cements and/or cement blends could be categorized as sulfate-resistant. Two screening procedures, the University of California Pavement Research Center's Caltrans rapid sulfate test and the American Society for Testing and Materials' Standard C1012 (standard test method for length change), were used to evaluate the cements/blended cements. Results from the Caltrans test identified only one of the blended cements investigated that failed to qualify as sulfate resistant. The results from the bar expansion test (ASTM C1012) indicated that only one cement evaluated would not meet the criterion for an American Concrete Institute (ACI) Class 1 sulfate-resistant cement
Small-scale structure-medium-interaction experiments : experiment 4 test results by B. R Phillips( Book )

4 editions published between 2001 and 2008 in English and held by 8 WorldCat member libraries worldwide

Laboratory characterization of type N mortar by Erin M Williams( Book )

4 editions published between 2008 and 2009 in English and held by 6 WorldCat member libraries worldwide

Personnel of the Geotechnical and Structures Laboratory, U.S. Army Engineer Research and Development Center, conducted a laboratory investigation to characterize the strength and constitutive property behavior of type N mortar. A total of 45 mechanical property tests were successfully completed: two hydrostatic compression tests, four unconfined compression (UC) tests, 18 triaxial compression (TXC) tests, four direct pull (DP) tests, six reduced triaxial extension (RTE) tests, two uniaxial strain (UX) tests, four uniaxial strain load/biaxial strain unload (UX/BX) tests, and five uniaxial strain load/constant volume strain loading (UX/CV) tests. In addition to the mechanical property tests, nondestructive pulse-velocity measurements were obtained on each specimen. The TXC tests exhibited a continuous increase in maximum principal stress difference with increasing confining pressure. A compression failure surface was developed from the TXC test results at nine levels of confining pressure and from the results of the UC tests. The results for the DP and RTE tests were used to determine the tensile strength of type N mortar and develop an extension failure surface. Type N mortar can withstand more deviatoric stress in compression than extension before failure occurs. During UX/BX tests, the test specimens recovered approximately one third of their peak compressive volumetric strain. During most of the CV loading, the stress path followed closely to the failure surface developed from the TXC tests, therefore validating the compression failure surface
Tactical wheeled vehicle survivability : construction and characterization of wet clay testbeds in bare charge experiments( Book )

3 editions published in 2010 in English and held by 6 WorldCat member libraries worldwide

Procedure for categorizing ground vehicles( Book )

2 editions published in 2002 in English and held by 5 WorldCat member libraries worldwide

The Modeling and Simulation (M & S) community models a large number of vehicle types. To ensure validity of these models, it's important to accurately represent vehicle mobility and logistical movements. Of course, the most accurate mobility representation would be to explicitly model each vehicle type. However, it is not practical to explicitly model every vehicle type in some applications, especially those simulating battalions and above. In those applications, vehicle classes are modeled instead of vehicles. When considering a particular vehicle, one must first determine which mobility category the vehicle falls into and then use the mobility of that category of vehicles to represent the trafficability of that vehicle. The following is a procedure for determining the appropriate mobility category or bin that represents a particular ground vehicle
Evaluation of expedient methods for mitigating dust on helipads by Tingle Jeb S( Book )

2 editions published in 2004 in English and held by 5 WorldCat member libraries worldwide

The U.S. Army Engineer Research and Development Center (ERDC) was tasked by the Marine Corps Systems Command to develop two dust control systems, one for expeditionary use on Forward Area Refueling Points (FARPs) and one for sustainment use on roads and other large area applications. The project consisted of the evaluation of various dust palliatives and application equipment under controlled laboratory conditions and during field tests. The products of this effort include equipment recommendations, palliative recommendations and complete application guidance. This report addresses testing performed to evaluate commercial palliatives and palliative distribution systems for expeditionary use in constructing and maintaining FARP sites. Eighteen helipads were constructed at Marine Corps Air Station Yuma using both experimental and commercial palliatives for dust abatement. The application methods were principally topical (spray-on) and expeditionary in nature. Each helipad was subjected to CH-46 rotary-wing aircraft traffic and selected helipads were subjected to CH-53 traffic. The helipads were evaluated based upon effectiveness in controlling dust durability foreign object damage (FOD) potential, and overall surface condition. Pertinent conclusions from the testing conducted are noted and recommendations for selecting dust abatement methods and materials are provided
Physical screening protection rapid technology transition project : shoulder-fired rocket performance evaluation( Book )

3 editions published between 2010 and 2011 in English and held by 5 WorldCat member libraries worldwide

Methodology and user's guide for PENCURV+ : version 1.0( Book )

2 editions published between 2003 and 2006 in English and held by 5 WorldCat member libraries worldwide

Enhanced coastal trafficability : road construction over sandy soils( Book )

3 editions published in 2003 in English and held by 5 WorldCat member libraries worldwide

Dynamic response of brittle materials from penetration and Split Hopkinson Pressure Bar experiments by Danny J Frew( Book )

2 editions published in 2001 in English and held by 5 WorldCat member libraries worldwide

Three sets of penetration experiments into limestone targets were conducted with geometrically similar, steel rod projectiles that had length-to-diameter ratios of 10- and 7.1-, 12.7-, and 23A-mm-diameters. Results from these penetration experiments and previously developed penetration models suggested that the limestone target exhibited strain-rate sensitivity. A modified split Hopkinson pressure bar facility (SHPB) was used to study the dynamic material responses of brittle materials, such as limestone, under a state of one-dimensional stress. The conventional split Hopkinson pressure bar apparatus was modified by shaping the incident pulse such that the samples are in dynamic stress equilibrium and have nearly constant strain rate over most of the test duration. A thin disk of annealed or hard C11000 copper is placed on the impact surface of the incident bar in order to shape the incident pulse. An analytical model and data show that a wide variety of incident strain pulses can be produced by varying the geometry of the copper disks and the length and striking velocity of the striker bar. The pulse shaping model predictions are in good agreement with measurements. Thus, this work presents analytical models and experimental techniques that provide procedures to obtain dynamic, compressive stress-strain data for brittle materials
Tactical wheeled vehicle survivability : results of experiments to quantify effects of charge depth of burial and soil type on aboveground impulse by John Q Ehrgott( Book )

3 editions published between 2010 and 2012 in English and held by 5 WorldCat member libraries worldwide

Occupant-centric survivability : characterization of the OCP-A-SC testbed soil by Thomas N Williams( Book )

2 editions published in 2015 in English and held by 5 WorldCat member libraries worldwide

Feasibility investigation into strengthening of timber bridge stringers( Book )

2 editions published in 2007 in English and held by 5 WorldCat member libraries worldwide

The majority of timber bridges in the United States are nearing the end of their service life. They exhibit several types of damage, which occurs in their structural elements such as timber stringers. The most commonly encountered damage type in timber stringers in bridge structures is horizontal splits. Researchers investigated the feasibility of repairing timber stringers that showed signs of horizontal splitting along the length of the member. Timber stringer damage types were reviewed with particular attention to horizontal splits along the span, and the factors contributing to these failure types were studied. Typical timber stringers recently taken from service were examined to understand the effects of horizontal split damage and its impact on the effectiveness of the repair methods. Several methods for repairing horizontal splits along the span of timber stringers were employed, including fiber reinforced polymer plates attached to the vertical sides of the stringers with lag screws. Thirteen stringers were repaired with approximately 44% increase of the unstrengthened post failure load capacity. It was proven that the methods examined in this study may be feasible to repair timber stringers with horizontal splits
M3A1, 40-lb shaped charge penetration evaluations by Stephanie E Robert( Book )

2 editions published between 2013 and 2016 in English and held by 4 WorldCat member libraries worldwide

Development of a geomorphology-based framework for cultural resources management, Dworshak Reservoir, Idaho by Maureen K Corcoran( Book )

3 editions published between 1995 and 2001 in English and held by 4 WorldCat member libraries worldwide

The U.S. Army Engineer Research and Development Center developed a technical framework for identifying, evaluating, and mitigating impacts to cultural resource sites affected by reservoir operation in the Columbia River System. Components of this framework include geomorphic analysis, resource monitoring, and site protection procedures. Geomorphic analysis encompasses identifying active erosional processes in the vicinity of a reservoir, and defining how these processes will change when operational procedures for the reservoir are changed. Cultural resource monitoring occurs at four levels: compiling existing information; designing a monitoring program based on site-specific data; implementation of monitoring; and synthesis and analysis of data derived from the monitoring. The protection plan can be tailored to either storage-type or run-of-river reservoirs. It may involve long-term protection in place, or removal of endangered cultural sites. Changing operational procedures at each Corps reservoir has the potential to impact cultural resources. Development and implementation of a cultural resource management plan should mitigate some of the negative impacts
Field testing and load rating report, bridge FSBR-514, Fort Shafter, Hawaii( )

2 editions published in 2009 in English and held by 4 WorldCat member libraries worldwide

Bridge Diagnostics was contracted by the U.S. Army Corps of Engineers to perform live-load testing and load rating on Bridge FSBR-514 on Walker Road over Kahauiki Stream, Fort Shafter, Hawaii, in conjunction with three other structures - Bridge FSBR-201, FSBR-1608, and ERBR-9. A primary goal of the live-load testing was to determine the relative effects of different military load configurations. A second goal was to use the measured load responses to verify and calibrate a finite element model of the structure. The load test results indicated that the culvert was relatively stiff and did a good job of distributing load. Load ratings resulting from the field-verified model indicated that all examined load configurations could cross the bridge within inventory (design) limits. Load ratings were computed in accordance with the American Association of State Highway and Transportation Officials' AASHTO LRFD bridge design specifications (2004) and Manual for the condition evaluation and load and resistance factor rating of highway bridges (2003)
Instrumentation at the National Center for Asphalt Technology test track by Reed B Freeman( Book )

2 editions published in 2001 in English and held by 4 WorldCat member libraries worldwide

Laboratory characterization of solid grade SW brick by Erin M Williams( Book )

3 editions published in 2007 in English and held by 4 WorldCat member libraries worldwide

Personnel of the Geotechnical and Structures Laboratory, U.S. Army Engineer Research and Development Center, conducted a laboratory investigation to characterize the strength and constitutive property behavior of solid Grade SW brick. A total of 37 mechanical property tests were successfully completed, consisting of two hydrostatic compression tests, four unconfined compression (UC) tests, 12 triaxial compression tests (TXC), two constant mean normal stress tests, four direct pull (DP) tests, two uniaxial strain tests, four uniaxial strain load/biaxial strain unload (UX/BX) tests, five uniaxial strain load/constant volume strain loading (UX/CV) tests, and two uniaxial strain load/constant strain path (UX/SP) tests. In addition to the mechanical property tests, nondestructive pulse-velocity measurements were performed on each specimen. Results from the TXC tests exhibited a continuous increase in principal stress difference with increasing confining stress. A compression failure surface was developed from the TXC results at six levels of confining pressure and from the results of the UC tests. The results for the DP tests were used to evaluate the tensile strength of the brick. During UX/BX tests, stress relaxation was evident during the change from uniaxial strain loading to biaxial strain unloading. Good correlations were observed between the stress paths obtained from the UX/BX, UX/CV, and UX/SP strain path tests and the failure surface developed from the TXC tests
 
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Alternative Names
United States. Army. Corps of Engineers. Geotechnical and Structures Laboratory

United States. Army Geotechnical and Structures Laboratory

Languages
English (56)