| Large-Scale Physical Separation of Depleted Uranium from Soil |
Sep 2012 |
45 pages |
| Authors:
Steven L Larson; Victor F Medina; John Ballard; Chris Griggs; Michelle Wynter; David Mackie; Ben King; Catherine Nestler; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
|
 | Dry physical separation processes were tested at large-pilot scale (1,000 kg soil batches) at Yuma Proving Ground (YPG) to evaluate this technique for removal of depleted uranium (DU) metal from soil. Two sample locations, the Catch Box and the Buried DU Penetrator Test Site (DU Garden) were evaluated. These locations were chosen since previous small-scale testing confirmed that soils from these sites had varied uranium concentration, degrees of weathering, and ... |
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| Durable Hybrid Coatings |
JAN 2011 |
62 pages |
| Authors:
Vsevold Balbyshev; Larry R. Pederson; Dante Battocchi; Gordon P. Bierwagen; NORTH DAKOTA STATE UNIV FARGO
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| A new in situ corrosion sensor electrode was designed, fabricated, and tested. The new sensor was shown in performance testing to be robust, flexible, reproducible, and adaptable to various field applications. The shape and size of the sensor could be easily changed by creating the appropriate shadow mask for metal deposition. Sensors were embedded between a Mg-rich primer, developed earlier with support from this project, and the topcoat. Coated substrates ... |
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| Separation of Depleted Uranium From Soil |
Mar-2009 |
197 pages |
| Authors:
Steven Larson; Victor Medina; John Ballard; Michelle Thompson; Greg O'Connor; Chris Griggs; Catherine Nestler; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
|
| Dry and wet physical separation processes were tested at Yuma Proving Ground to remove depleted uranium (DU) from soil. Four sample locations were tested that had varied uranium concentration, weathering, and aging of fired, DU residues. Reduction of soil DU concentration was achieved using simple vibratory or agitated screening techniques. For soils into which the DU had been recently fired, these techniques were successful at removing a large fraction (70 ... |
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| The Effect of Moisture Transport on Corrosion Protective Coatings, or, Being Careful with Accelerated Weathering |
Feb-2009 |
13 pages |
| Authors:
Xiaodong Shi; Brian R Hinderliter; Stuart G Croll; NORTH DAKOTA STATE UNIV FARGO
|
| OUTLINE: Not about corrosion directly -- But about the protective coatings -- How they up take water -- How long they take to respond. Introduction and Motivation -- Approaches -- Modeling -- Experiment -- Conclusions -- Acknowledgment. IMPORTANCE OF COATINGS: Principal protection against corrosion -- The end is in sight when the coating is defeated. |
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| Evaluation of Chemical Agent Resistant Coatings that are Exposed to Ultraviolet Radiation |
AUG 2007 |
22 pages |
| Authors:
William S. Lum; Jr. Kidd James A.; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
|
| The U.S. Army Research Laboratory (ARL) has the lead research and development responsibility for chemical agent resistant coatings (CARC) and manages the relevant specifications that govern the topcoats, primers, and pretreatments for CARC systems. In striving to optimize coating durability and to extend the life cycle of vehicles and weapon systems that use CARC materials, ARL evaluated several CARC topcoats for ultraviolet (UV) resistance. After samples were subjected to UV ... |
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| The Temporal Dynamics of Terrestrial Organic Matter Transfer to the Oceans: Initial Assessment and Application |
JUN 2007 |
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| Authors:
Nicholas J. Drenzek; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
|
 | This thesis employs compound-specific stable carbon and radiocarbon isotopic analysis of organic biomarkers to (a) resolve petrogenic from pre-aged vascular plant organic carbon (OC) in continental margin sediments, (b) investigate the underlying mechanisms controlling the anomalously old ages that are often observed for the terrestrial component of sedimentary OC, and (c) address the associated consequences for biomarker-based climate reconstructions. In Chapters 2 and 3, coupled molecular isotope mass balances demonstrate ... |
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| Durable Wood Composites for Naval Low-Rise Buildings |
JAN 2007 |
765 pages |
| Authors:
Michael P. Wolcott; Marie Pierre-Laborie; Paul Smith; Sudipta Damohapatra; Armando McDonald; Han-Seung Yang; Sudip Chowdhury; Vikram Yadama; Daniel McGraw; Timothy Smith; WASHINGTON STATE UNIV PULLMAN WOOD MATERIALS AND ENGINEERING LAB
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| SIDING AND TRIM COMPONENTS: Task S1 - Evaluate the durability perceptions, WPC substitution potential, and reasons for adopting (purchasing & carrying) new building materials from key members of the value chain (building material wholesalers and retailers). Task S2 - Examine the value propositions for specific residential siding and siding accessories and OSB products from the perspective of the manufacturer and key channel members. Task S3 - Evaluation of interactions between ... |
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| Ecological Soil Screening Levels For Invertebrates at Explosives-Contaminated Sites: Supporting Sustainability of Army Testing and Training |
NOV 2006 |
8 pages |
| Authors:
Roman G. Kuperman; Ronald T. Checkai; Michael Simini; Carlton T. Phillips; Jan E. Kolakowski; Nancy A. Chester; EDGEWOOD CHEMICAL BIOLOGICAL CENTER ABERDEEN PROVING GROUND MD
|
| The Army Strategy for the Environment applies an ecosystem approach to managing natural resources on Army installations. It incorporates the principles of sustainability across the Army into all functional areas. We conducted investigations to develop critical environmental data required for successful management of Army installations in a sustainable manner, and for the knowledge-based decision making. Assessment and protection of the terrestrial environment at Army installations can be advanced by developing ... |
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| Toxicity of a New Polynitramine Energetic Material, CL-20, to the Enchytraeid Worm, Enchytraeus Crypticus, in a Sandy Loam Soil |
AUG 2006 |
31 pages |
| Authors:
Roman G. Kuperman; Ronald T. Checkai; Michael Simini; Carlton T. Phillips; J. S. Anthony; Jan E. Kolakowski; Carl W. Kurnas; Emily A. Davis; DEPUTY DIRECTOR OF DEFENSE RESEARCH AND ENGINEERING ARLINGTON VA STRATEGIC ENVIRONMENTAL RESEARCH AND DEVELOPMENT PROGRAM
|
| In this report, the toxicity of polynitramine energetic material, hexanitrohexaazaisowurtzitane (CL-20), to the soil invertebrate species, Enchytraeus crypticus, was investigated using the Enchytraeid Reproduction Test. The study was designed to develop eco-toxicological benchmark values for the ecological risk assessment of the potential impacts of the accidental release of this compound into the environment. Tests were conducted in Sassafras Sandy Loam soil, which supports the relatively high bio-availability of CL-20. Weathering ... |
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| Effect of Simulated Weathering and Aging of TNT in Amended Sandy Loam Soil on Toxicity to the Enchytraeid Worm, Enchytreaeus Crypticus |
MAY 2006 |
45 pages |
| Authors:
Roman G. Kuperman; Ronald T. Checkai; Michael Simini; Carlton T. Phillips; Jan E. Kolakowski; Carl W. Kurnas; EDGEWOOD CHEMICAL BIOLOGICAL CENTER ABERDEEN PROVING GROUND MD RESEARCH AND TECHNOLOGY DIR
|
| The U.S. Environmental Protection Agency is developing Ecological Soil Screening Levels (Eco-SSLs) for the ecological risk assessment of contaminants at Superfund sites. Insufficient information for TNT to generate Eco-SSL for soil invertebrates has necessitated standardized toxicity testing to fill the data gap. In these studies, the Enchytraeid Reproduction Test (ISO/16387:2001) was adapted for use with Enchytraeus crypticus. Tests were conducted in Sassafras sandy loam soil, which supports relatively high bioavailability ... |
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| Toxicity of RDX, HMX, TNB, 2,4-DNT, and 2,6-DNT to the Earthworm, Eisenia Fetida, in a Sandy Loam Soil |
MAR 2006 |
49 pages |
| Authors:
Michael Simini; Ronald T. Checkai; Roman G. Kuperman; Carlton T. Phillips; Jan E. Kolakowski; Carl W. Kurnas; Geoffrey Sunahara; EDGEWOOD CHEMICAL BIOLOGICAL CENTER ABERDEEN PROVING GROUND MD
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| The U.S. Environmental Protection Agency is developing Ecological Soil Screening Levels (Eco-SSLs) for ecological risk assessment of soil contaminants at Superfund sites. Insufficient information existed to generate Eco-SSLs for explosives and related materials in soil. The earthworm (Eisenia fetida) reproduction test was conducted in Sassafras sandy loam soil amended with hexahydro-1,3 ,5-trinitro-1,3 5-triazine (RDX), octahydro-1 3,5,7-tetranitro-1,3 ,5,7-tetrazocine (HMX), 2,4-dinitrotoluene (2,4-DNT), 2,6-dinitrotoluene (2,6-DNT), and 1,3,5-trinitrobenzene (TNB) to fill the data gaps. ... |
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| Novel Electroactive Polymers as Environmentally Compliant Coatings for Corrosion Control |
03-Feb-2006 |
189 pages |
| Authors:
Peter Zarras; Florian Mansfeld; Wynne; J Kenneth; Dennis E Tallman; Brian C Benicewicz; Jun Xu; Gay Kendall; NAVAL AIR WARFARE CENTER WEAPONS DIV CHINA LAKE CA
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| The objectives of this SERDP program (WP 1148) have been completed successfully. The synthesis, scale-up and characterization of new monomers based on a bis-amino derivative of poly-p-phenylene vinylene (PPV) called poly(2,5-bis(N-methyl-N-hexylamino)phenylene vinylene, (BAM-PPV) and oligomers of polyaniline have been completed. These polymers have been thoroughly characterized using advanced spectroscopic and analytical methods. The details regarding the EAP synthesis has been published in the literature for duplication including potential industrial use. ... |
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| Toxicity of Nitro-Heterocyclic and Nitroaromatic Energetic Materials to Terrestrial Plants in a Natural Sandy Loam Soil |
APR 2005 |
105 pages |
| Authors:
Sylvie Rocheleau; Majorie Martel; Ghalib Bardai; Manon Sarrazin; Sabine Dodard; Louise Paquet; Alain Corriveau; Roman G. Kuperman; Ronald T. Checkai; EDGEWOOD CHEMICAL BIOLOGICAL CENTER ABERDEEN PROVING GROUND MD
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| The United States Environmental Protection Agency is developing ecological soil screening level (Eco-SSL) values for ecological risk assessment of contaminants at Superfund sites. Insufficient information for RDX, HMX, 2,4-DNT, 2,6-DNT, and TNB to generate Eco-SSLs for terrestrial plants necessitated toxicity testing to fill the data gaps. Standardized toxicity tests were selected and used, on the basis of their ability to measure chemical toxicity to ecologically relevant test species, and their ... |
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| Disturbed Soil Signatures for Mine Detection |
DEC 2004 |
3 pages |
| Authors:
G. Koh; J. R. Ballard; ENGINEER RESEARCH AND DEVELOPMENT CENTER HANOVER NH COLD REGIONS RESEARCH AND ENGINEERING LAB
|
| We are investigating the phenomenology of disturbed soil signature due to mine emplacement. Non-imaging spectral sensors and high-frequency radars are being used to collect disturbed soil signatures over a wide range of geo- environmental conditions. The properties and processes of the disturbed soil that can be exploited to assist in the detection of buried landmines are first identified. This will be followed by time series investigation to understand the effects ... |
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| Assessing TNT Toxicity on Soils With Contrasting Characteristics Using Soil Invertebrate Toxicity Tests |
DEC 2004 |
3 pages |
| Authors:
Michael Simini; Ronald T. Checkai; Roman G. Kuperman; Carlton T. Phillips; Jan E. Kolakowski; Carl W. Kurnas; EDGEWOOD CHEMICAL BIOLOGICAL CENTER ABERDEEN PROVING GROUND MD
|
| We investigated the toxicity of 2,4,6- trinitrotoluene (TNT) to earthworm (Eisenia fetida), potworm (Enchytraeus crypticus), and springtail (Folsomia candida) in five natural soils: Sassafras sandy loam (SSL), Teller sandy loam (TSL), Richfield clay loam (RCL), Kirkland clay loam (KCL), and Webster clay loam (WCL). According to Ecological Soil Screening Level (Eco-SSL) criteria (USEPA 2003), relative bioavailability scores for organic chemicals in these soils were rated "high" for SSL and TSL, ... |
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| 31P MAS NMR - A Useful Tool for the Evaluation of VX Natural Weathering in Various Urban Matrixes |
15 NOV 2004 |
26 pages |
| Authors:
Dana M. Mizrahi; Ishay Columbus; ISRAEL INST FOR BIOLOGICAL RESEARCH NESS ZIONA DEPT OF ORGANIC CHEMISTRY
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| Development of an Enhanced Durability Corrosion Protecting Self-Priming Topcoat |
15 JUL 2004 |
7 pages |
| Authors:
Joseph H. Osborne; BOEING PHANTOM WORKS SEATTLE WA
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| Monthly report of progress in developing an enhanced self priming topcoat using high performance urethane resins and advanced concepts in nonchromate corrosion protection. The goal of the program is to develop a coating that meets and exceeds the requirements of TT-P-2756 and exceeds the performance of the existing topcoat material qualified to the specification. |
|
| Toxicity of Nitro-Heterocyclic and Nitroaromatic Energetic Materials to Enchytraeid Worm.Enchytraeus Crypticus in a Natural Sandy Loam Soil |
MAR 2004 |
50 pages |
| Authors:
Roman G. Kuperman; Ronald T. Checkai; Michael Simini; Carlton T. Phillips; Jan E. Kolakowski; EDGEWOOD CHEMICAL BIOLOGICAL CENTER ABERDEEN PROVING GROUND MD RESEARCH AND TECHNOLOGY DIR
|
| U.S. Environmental Protection Agency is developing Ecological Soil Screening Level (Eco-SSL) values for ecological risk assessment of contaminants at Superfind sites. Insufficient information for RDX, HMX, 2,4-DNT, 2,6-DNT, and TNB to generate Eco-SSLs necessitated standardized toxicity testing to fill the data gaps. The Enchytraeid Reproduction Test (ISO/16387:2001) was adapted using Enchytraeus crypticus in these studies. Tests were conducted in Sassafras sandy loam soil, which supports relatively high bioavailability of energetic ... |
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| Mechanisms of Military Coatings Degradation: Accelerated and Outdoor Exposure Evaluations |
SEP 2003 |
26 pages |
| Authors:
John A. Escarsega; William S. Lum; Philip H. Patterson; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| The Weapons and Materials Directorate of the U.S. Army Research Laboratory (ARL) has completed a 4-year research investigation on identifying and quantifying key degradation mechanisms of legacy and newly developed coatings systems used by the U.S. Army, Marine Corps, and Air Force. This study has incorporated numerous analytical tools and methods in an effort to better understand the fundamental principles of environmental degradation that lead to coating failures. These environmentally ... |
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| Contaminated Sediments at Navy Facilities: Cleanup Alternatives |
01 DEC 2002 |
7 pages |
| Authors:
NAVAL FACILITIES ENGINEERING COMMAND WASHINGTON DC
|
| The goals of sediment remediation are to remove contaminated sediments from the environment, obstruct contaminant migration into the environment, and/or minimize exposure of ecological or human receptors to sediment contaminants. Contaminated sediments can be either left in place or removed, and often several cleanup techniques are used in combination or in sequence. In some situations, the best solution may be to allow natural burial and chemical weathering to permanently reduce ... |
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| Toxicity Assessments of Antimony, Barium, Beryllium, and Manganese for Development of Ecological Soil Screening Levels (ECO-SSL) Using Enchytraeid Reproduction Benchmark Values |
NOV 2002 |
86 pages |
| Authors:
Roman G. Kuperman; Ronald T. Checkai; Canton T. Phillips; Michael Simini; Jason A. Speicher; EDGEWOOD CHEMICAL BIOLOGICAL CENTER ABERDEEN PROVING GROUND MD
|
| The U.S. Environmental Protection Agency is developing Ecological Soil Screening Level (Eco-SSL) benchmarks for ecological risk assessment of contaminants at Superfund sites. Benchmarks for invertebrates Were developed from existing literature. Insufficient information for Ba, Be, Mn, and Sb to generate Eco-SSLs necessitated standardized toxicity testing to fill the data gaps. We used the Enchytraeid Reproduction Test (ERT) with Enchytraeus crypticus in this study. This test was selected on the bases ... |
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| Feasibility and Implications of a Rock Coating Catena: Analysis of a Desert Hillslope |
AUG 2002 |
209 pages |
| Authors:
Ronald E. Palmer; ARIZONA STATE UNIV TEMPE
|
| This research analyzes rock coatings on a basaltic hill in the western Mojave Desert using a combination of aerial imagery, a new method of digital in-field' ground-based image processing, and statistical analyses. In addition, this research resulted in the development of a new rock coating index (RCI) to generalize changes in rock coatings along a slope, applied here to 2, 760 individual clasts. RCI values reveal variations of different types ... |
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| Predicting the UV Exposure at Philadelphia, PA |
JUL 2002 |
14 pages |
| Authors:
James R. Slusser; COLORADO STATE UNIV FORT COLLINS COLL OF FORESTRY AND NATURAL RESOURCES
|
| The Naval Surface Warfare Center has materials exposed for outdoor weathering and exposure at three sites: Philadelphia, PA; Miami, FL; and Wittman, AZ. The Miami, FL and Wittman, AZ test sites are run by Atlas Weathering Service and are instrumented to measure UV-A plus UV-B solar radiation using the Eppley TUVR. Since there is no Eppley TUVR at Philadelphia, PA, an estimate is made of the radiation a TUVR would ... |
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| Assessment of Geology as it Pertains to Modeling Uplift in Jointed Rock: A Basis for Inclusion of Uncertainty in Flow Models |
MAR 2002 |
205 pages |
| Authors:
William L. Murphy; Robert M. Ebeling; John M. Anderson; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS GEOTECHNICAL AND STRUCTURES LAB
|
| Uplift is one of the major forces affecting stability of rock-founded concrete dams. Problems occur in determining the magnitude and distribution of uplift pressures within rock foundations and in extrapolating uplift pressures to reservoir levels above the pool of record. Uplift is controlled by the flow regime within the rock foundation. The flow regime is a function of the geology. The goal of research in uplift uncertainty and probabilistic modeling ... |
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| Mechanisms of Military Coatings Degradation: Color and Gloss Performance Evaluation |
FEB 2002 |
34 pages |
| Authors:
William S. Lum; Philip A. Patterson; John A. Escarsega; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| The Weapons and Materials Research Directorate of the U.S. Army Research Laboratory is leading a research study on military coatings degradation. The goal of this project is to provide detailed analysis of coating system failure mechanisms and where possible provide predictive capability to enable service life estimates for these systems. This interim report focuses on some of the initial durability data gathered on the coatings' exposures in Florida, Arizona, and ... |
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| High Solids Primers Enhancement |
APR 2000 |
70 pages |
| Authors:
Elah Wallace; SOUTHWEST RESEARCH INST DAYTON OHIO
|
| The objective of this task was to monitor the flight testing of coating systems identified by the HPACS project conducted by Battelle to offer improved film properties of weatherability and cleanability. All tested coatings compiled with the 1998 National Emissions Standard for Hazardous Air Pollutants (NESHAP). This project provided a tool for ALCs to implement the best performing commercial "off the shelf" (COTS) coating system available, utilizing ... |
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| Results of a Microbial Weathering Study of Composted Explosives Contaminated Soil Obtained from the Umatilla Army Depot Actvity, Hermiston Oregon, Second Phase Testing (September 1998-S |
OCT 1999 |
25 pages |
| Authors:
Michael F. Broder; TENNESSEE VALLEY AUTHORITY MUSCLE SHOALS AL
|
| This report describes the results of the third and final year (September 1998 through September 1999) of a Microbial Weathering Study conducted to determine if composted explosives-contaminated soil would leach explosives or explosive by-products. The study was conducted using compost produced during the remediation of an explosives-contaminated site at the U.S. Army's Umatilla Army Depot Activity at Hermiston, Oregon. This compost was shipped to ... |
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| A Cultural Resource and Geological Study Pertaining to Four Selected Petroglyph/Pictograph Sites on Nellis Air Force Range and Adjacent Overflight Lands, Lincoln and Nye Countries, Nevada |
AUG 1999 |
284 pages |
| Authors:
William G. White; Richard L. Orndoff; EARTH TECH COLTON CA
|
| This study documents comparative results of four petroglyph and/or pictograph sites. two on Nellis Air Force Range (AFR), and two on adjacent Nellis AFR aircraft overflight lands administered by the Bureau of Land Management. A fifth cultural resources site, situated east of Beatty, Nevada, was studied as a control site for the sonic boom aspect of the study. Work focused on determining aircraft sonic boom ... |
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| Moisture Cured Urethane (MCU) Coatings for Use on Antenna Towers: A feasibility Study |
JUL 1999 |
39 pages |
| Authors:
C. D. Gaughen; Theresa A. Hoffard; NAVAL FACILITIES ENGINEERING SERVICE CENTER PORT HUENEME CA
|
| A feasibility study on the use of Moisture Cured Urethane (MCU) coatings for large antenna towers was conducted. Results are as follows: (1) MCU coating systems are performing well on Oregon's coastal bridges, (2) MCU coatings will produce a somewhat acceptable bond to either a damp or wet substrate, (3) MCU coatings form excellent bonds to both blasted steel and to MCU intercoats, (4) Aliphatic MCU topcoats exhibit a decrease ... |
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| Evaluation of Water-Thinned Preconstruction Primers Containing No Metal Pigments |
DEC 1997 |
141 pages |
| Authors:
Dwight L. Turner; Walter R. Mohn; PETERSON BUILDERS INC STURGEON BAY WI
|
| The primary goal of NSRP Project 3-95-3 was to identify and evaluate water-thinned preconstruction primers (PCP's) which could potentially be used as viable substitutes for conventional PCP's containing powdered zinc and high levels of volatile organic compounds (VOC's). The objectives of this 6-Task 17-month project were to compile a comprehensive list of commercially available water-thinned preconstruction primers (PCP's) which contain little or no hazardous metal and to evaluate the more ... |
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| Fourier-Transform Infrared (FTIR) Characterization of Chemical Agent Resistant Coatings (CARC) Durability Using Infrared (IR) Cards and Silicon Wafers |
SEP 97 |
49 pages |
| Authors:
William Lum; Philip Patterson; ARMY RESEARCH LAB FORT BELVOIR VA
|
| Rapid, cost-effective sampling accessories for Fourier-Transform Infrared (FTIR) analysis are quite suitable with minimum sample preparation in coating materials studies. The U.S. Army's camouflage, polyurethane topcoat MIL- C-46l68, "Chemical Agent Resistant Coating" (CARC) was applied to infrared (IR) cards and silicon wafers. After curing, the coating's durability was tested using two separate accelerated weathering techniques (QUV-CON and Xenon-Arc), and as well as, two outdoor exposure test methods (South Florida and ... |
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| High Performance Steel Development for Highway Bridge Construction: A cooperative Effort |
AUG 97 |
29 pages |
| Authors:
Eric M. Focht; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD
|
| High Performance Steels (HPS) for highway bridge applications are being developed under a cooperative agreement between the FHWA, the AISI and the U.S. Navy. This combined and coordinated effort has culminated in the production of low carbon weathering steels which exhibit excellent strength, toughness and weldability at the 485 MPa (70 ksi) and 690 MPa (100 ksi) yield strength levels. The production heats of these HPS's meet the current mechanical ... |
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| Laboratory Evaluation of Commercial Epoxy Coating Systems for Civil Works Applications |
AUG 96 |
57 pages |
| Authors:
Timothy D. Race; CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL
|
| Provisions of the Clean Air Act Amendments of 1990 will put new restrictions on the use of high-solvent-content paints beginning in 1997. This will require the U.S. Army Corps of Engineers to find alternatives to some coatings now used to protect steel from corrosion in civil works applications. Furthermore, defense acquisition reform will mandate the use of commercially available products in place of most (or all) military paint specifications. To ... |
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| Infrared Techniques for Studying Coating Durability and Performance |
JUL 96 |
23 pages |
| Authors:
William S. Lum; Philip H. Patterson; ARMY RESEARCH LAB FORT BELVOIR VA
|
| This interim report describes the progress of the first stage of this 2-year ARL project. Determining possible infrared characterization techniques to be used in a progressive study of chemical-agent-resistant coating (CARC) materials was the main effort, using a Fourier transform infrared (FT-IR) instrument. Attenuated total reflectance (ATR) technology and other techniques were applied to analyze samples accurately, easily, and cost effectively. Preliminary results show that benefits can be realized in ... |
|
| Laboratory Evaluation of Commercial Epoxy Zinc-Rich Primers for Civil Works Applications |
FEB 96 |
72 pages |
| Authors:
Timothy D. Race; CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL
|
| The Corps of Engineers' specification for epoxy zinc rich primer designates E-303d for application as a primer for topcoats. However, E-303d has a relatively high volatile organic compound (VOC) content, which will likely be limited by a forthcoming U.S. Environmental Protection Agency (USEPA) national rule for VOC content of architectural and industrial maintenance coatings. A possible alternative to E-303d is an epoxy coating enhanced with a zinc-rich primer. This research ... |
|
| Matching Simulated Fracture Data with Field Measurements Using Joint Intensity |
1996 |
11 pages |
| Authors:
Judy Ehlen; ARMY TOPOGRAPHIC ENGINEERING CENTER ALEXANDRIA VA
|
| Three-dimensional models of fracture patterns were generated using different measures of joint intensity (lambda), a measure of joint surface area per unit volume. The simulated data were compared to field measurements and the models were regenerated until the two matched as close as possible. Mean vertical joint spacing was used for the comparison. Because only a sample of trace lengths was measured in each outcrop, ... |
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| Low Cost Sorbents Screening and Engineering Analysis of Zeolite for Treatment of Metals Contaminated Water and Soil Extracts |
1996 |
175 pages |
| Authors:
Trudy J. Olin; Julie M. Rosado; Susan Bailey; R. M. Bricka; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
|
| Heavy metals contamination is an environmental problem at Army installations engaged in firearms training and munitions production. Weathering and corrosion of expended munitions and leaching from wastewater lagoons, landfills and bum pits, has resulted in heavy metals contamination of the soil at these facilities. Transport of metals to the groundwater has been confirmed in some locations, requiring treatment of the groundwater at the site. Certain treatment processes for contaminated soil ... |
|
| Beaver Dam Secant Pile Wall Completion Report |
OCT 95 |
401 pages |
| Authors:
Patrick W. Jordan; Larry Pitchford; RODIO-NICHOLSON JOINT VENTURE BOSTON MA
|
| The report presents a comprehensive project history, beginning in 1966 with the initial Beaver Lake (Located near Eureka Springs, in northwest Arkansas, U.S.A.) impoundment against Dike 1, which produced observable surface seepage from five areas downstream of Dike 1. Seepage continued to increase due to limestone rock weathering and solutioning, combined with removal of colloidal sized soil material from the overburden and weathered rock zones, particularly along two faults that ... |
|
| Beaver Dam Secant Pile Wall Completion Report. Volume 1 |
OCT 95 |
201 pages |
| Authors:
Patrick W. Jordan; Larry Pitchford; RODIO-NICHOLSON JOINT VENTURE BOSTON MA
|
| The report presents a comprehensive project history, beginning in 1966 with the initial Beaver Lake (Located near Eureka Springs, in northwest Arkansas, U.S.A.) impoundment against Dike 1, which produced observable surface seepage from five areas downstream of Dike 1. Seepage continued to increase due to limestone rock weathering and solutioning, combined with removal of colloidal sized soil material from the overburden and weathered rock zones, particularly along two faults that ... |
|
| Development of High Performance Steels for Bridge Construction |
AUG 95 |
37 pages |
| Authors:
Eric M. Focht; Thomas W. Montemarano; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD
|
| High strength steels that are used in bridge construction (ASTM A709) have yield strengths in the 50 to 100 ksi range and allow for carbon levels to reach as high as 0.23 wt.%. For good weldability, the carbon content in HSLA steels used by the Navy is usually restricted to a maximum of 0.10 wt.%. The Navy is working with industry to develop new high performance steels for bridges with ... |
|
| Engineering Reliability and Risk Analysis for Water Resources Investments; Role of Structural Degradation in Time-Dependent Reliability Analysis |
JUL 95 |
64 pages |
| Authors:
Bruce R. Ellingwood; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF CIVIL ENGINEERING
|
| This report presents the results of a preliminary investigation of the feasibility of incorporating structural degradation into time-dependent reliability analysis of navigation infrastructure on inland and coastal waterways. An appraisal is presented of methodologies for engineering decision that might enable the owner/operator of a navigation facility to perform condition assessments, determine its economical remaining service life, and schedule routine maintenance and repair so as to minimize total operating costs without ... |
|
| Roof Blisters: Cause and Cure |
JUL 95 |
13 pages |
| Authors:
Charles Korhonen; Brian Charest; COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
|
| Blisters are a major problem of built-up roof membranes. They are caused by voids built into the roof during construction. They develop into the characteristic dome-shaped humps by a breathing action driven by thermal cycling. A small pressure relief vent was patented by CRREL as a cost-effective way to repair blisters. Though these vents cannot prevent blisters from forming, they can lengthen a roof's service life by repairing the blisters ... |
|
| Development of a Human Health Oral Risk Factor for Long Chain Petroleum Hydrocarbons |
OCT 94 |
49 pages |
| Authors:
D. A. Staats; STAATS CREATIVE SCIENCES MOUNT DORA FL
|
| The primary objective of the research presented herein was to develop oral risk factors for long chain petroleum hydrocarbons (LCPHs). Literature searches were conducted on petroleum products and specific LCPHs. Over 5,000 references were identified and over 100 references were reviewed. Information was collected on the chemical composition and analysis of total petroleum hydrocarbons (TPH); the environmental regulation of TPH in soils; the weathering of TPH in soils; risk factors ... |
|
| Gel Permeation Chromatography Analysis of Coal Tar-Based Joint Sealants |
JUN 94 |
106 pages |
| Authors:
Rogers T. Graham; Larry N. Lynch; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS GEOTECHNICAL LAB
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| The premature failure of field molded pavement joint sealants has led to increased maintenance cost and can reduce the life cycle of a pavement structure. Two possible causes of premature failure of pavement joint sealants are prolonged heating prior to installation and excessive aging after it has been installed into the joint. This laboratory study was conducted to evaluate the use of gel permeation chromatography (GPC) as a method for ... |
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| Evaluation of Flame-Sprayed Polymer Coatings for Civil Works Navigation Structures |
APR 94 |
27 pages |
| Authors:
Timothy D. Race; CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL
|
| Provisions of the Clean Air Act Amendments of 1990 will further restrict the use of high solvent-content paints beginning in 1996, requiring the U.S. Army Corps of Engineers to replace some of the coatings now used to protect steel from corrosion in atmospheric and immersion exposures. To address this problem, the U.S. Army Construction Engineering Research Laboratories (USACERL) has experimented with several low-and zero-volatile emissions coating technologies. This report documents ... |
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| Transport and Fate of Nitroaromatic and Nitramine Explosives in Soils from Open Burning/Open Detonation Operations |
DEC 93 |
158 pages |
| Authors:
Ronald T. Checkai; Michael A. Major; Raphael O. Nwanguma; John C. Amos; EDGEWOOD RESEARCH DEVELOPMENT AND ENGINEERING CENTER ABERDEEN PROVING GROUND MD
|
| This report describes soil column experiments (task 1) used to study fate and transport of OB/OD residues within the upper 1 m of soil. Terrestrial (task 2) and aqueous (task 3) toxicity studies are reported elsewhere. Intact soil-cores were collected from Radford Army Ammunition Plant. Intact soil-cores were also collected from Anniston Army Depot, Milan Army Ammunition Plant, and Pueblo Army Depot; results of these three studies are reported elsewhere. ... |
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| Environmental Studies on Open Burn/Open Detonation Disposal Sites. Transport and Fate of Nitroaromatic and Nitramine Explosives in Soils from Open Burning/Open Detonation Operations: Radford Army Ammunition Plant (RAAP) |
DEC 93 |
159 pages |
| Authors:
Ronald T. Checkai; Michael A. Major; Raphael O. Nwanguma; John C. Amos; Carlton T. Phillips; EDGEWOOD RESEARCH DEVELOPMENT AND ENGINEERING CENTER ABERDEEN PROVING GROUND MD
|
| This report describes soil column experiments (task 1) used to study fate and transport of OB/OD residues within the upper 1 m of soil. (Terrestrial (task 2) and aqueous (task 3) toxicity studies are reported elsewhere.) Intact soil-cores were collected from Radford Army Ammunition Plant. Intact soil-cores were also collected from Anniston Army Depot, Milan Army Ammunition Plant, and Pueblo Army Depot; results of these three studies are reported elsewhere. ... |
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| Accelerated Weathering: Development of Fail/Pass Requirements for Low VOC Alkyd Enamels |
SEP 93 |
21 pages |
| Authors:
ARMY RESEARCH LAB FORT BELVOIR VA
|
| TT-E-489, a high-gloss alkyd enamel, was reformulated to be lead and chromate free and meet the maximum 3.5 lbs/gal Volatile Organic Compound (VOC) EPA requirement This report describes the evaluation of various ultraviolet light sources as used for accelerated weathering testing. Fail/pass criteria were the resistance to color change and to loss of gloss. TT-E-489, Low VOC coating, Topcoat, High gloss enamel |
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| Gel Permeation Chromatography Analysis of Asphalt-Based Joint Sealants |
JUL 93 |
116 pages |
| Authors:
Rogers T. Graham; Larry N. Lynch; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS GEOTECHNICAL LAB
|
| The premature failure of field molded pavement joint sealants has led to increased maintenance cost and can reduce the life cycle of a pavement structure. Two possible causes of premature failure of pavement joint sealants are prolonged heating prior to installation and excessive aging after it has been installed into the joint. This laboratory study was conducted to evaluate the use of gel permeation chromatography (GPC) as a method for ... |
|
| Environmental and Health Effects Review for Obscurant Graphite Flakes |
JUL 93 |
49 pages |
| Authors:
C. J. Driver; M. W. Ligotke; W. G. Landis; J. L. Downs; B. L. Tiller; BATTELLE MEMORIAL INST RICHLAND WA PACIFIC NORTHWEST LABS
|
| The health and environmental effects of obscurant graphite flakes were reviewed and compared to predicted levels of graphite flake materiel in the field during typical testing and training scenarios. Graphite flake dispersion and deposition for simulated mechanical and pyrotechnic releases were determined using a modified Gaussian atmospheric plume-dispersion model. The potential for wind resuspension of graphite flakes is controlled by weathering processes and incorporation rates in soil. Chemically, graphite flakes ... |
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Reports by Keyword(s)
WEATHERING
