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Measurements of transient electromagnetic propagation through concrete and sand

Description: This is the final report of a one-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). If a beam-chopping system could be developed for the Los Alamos Meson Physics Facility low-energy beam line, there would be potential to operate the Los Alamos Neutron Scattering Center (LANSCE) at much higher power and duty factor and enable such operation with a radio-frequency quadrapole (RFQ) injector. This would greatly extend the capability of t… more
Date: September 1, 1996
Creator: Aurand, J. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Comparison of experimental and analytical methods to evaluate thermal bridges in wall systems

Description: Twelve ASTM C0236 guarded hot box experiments have been performed on wall systems containing a variety of thermal bridges. All of the wall systems included steel framing. Six walls also had a concrete block wall system and a concrete slab to simulate a wall/floor intersection. Thermal bridges included in the wall systems included steel studs, steel tracks, steel stud/track joints, fasteners (steel framing system), concrete slab, metal bolts and angle iron, and brick ties (concrete block wall). … more
Date: March 1997
Creator: Desjarlais, A. O. & McGowan, A. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Wooden concrete: High thermal efficiency using waste wood

Description: Wood concrete mixture of wood shavings, lime and cement is widely used in European building construction. In spite of many advantages, this material is almost unknown in the US. Eventual application of wooden concrete in building block production is discussed in this paper. Based on finite difference computer modeling, the thermal performance of several masonry wall systems and their components have been analyzed. The total wall system thermal performance for a typical single-story ranch house … more
Date: September 1, 1994
Creator: Kosny, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Multi-use applications of dual-band infrared (DBIR) thermal imaging for detecting obscured structural defects

Description: Precise dual-band infrared (DBIR) thermal imaging provides a useful diagnostic tool for wide-area detection of defects from corrosion damage in metal airframes, heat damage in composite structures and structural damage in concrete bridge decks. We use DBIR image ratios to enhance surface temperature contrast, remove surface emissivity noise and increase signal-to-clutter ratios. We clarify interpretation of hidden defect sites by distinguishing temperature differences at defect sites from emiss… more
Date: May 1, 1994
Creator: Del Grande, N. K. & Durbin, P. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Cryogenic vertical test facility for the SRF cavities at BNL

Description: A vertical test facility has been constructed to test SRF cavities and can be utilized for other applications. The liquid helium volume for the large vertical dewar is approximate 2.1m tall by 1m diameter with a clearance inner diameter of 0.95m after the inner cold magnetic shield installed. For radiation enclosure, the test dewar is located inside a concrete block structure. The structure is above ground, accessible from the top, and equipped with a retractable concrete roof. A second radiati… more
Date: March 28, 2011
Creator: Than, R.; Liaw, C. J.; Porqueddu, R.; Grau, M.; Tuozzolo, J.; Tallerico, T. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Computation of the seismic stability of earth retaining structures

Description: The purpose of this CRADA project was to evaluate the seismic stability of block retaining wall systems. Retaining wall systems are used extensively in private and commercial developments. This study was designed to develop and demonstrate a computer modeling technology to be used to predict the seismic stability of any block wall system design. The nonlinear finite element computer programs developed at LLNL and employed in the Computational Earthquake Initiative were utilized in this small bu… more
Date: July 30, 1998
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Technology for the Recovery of Fuel and Adsorbent Carbons from Coal Burning Utility Ash Ponds and Landfills

Description: Several sampling techniques were evaluated to recover representative core samples from the ash ponds at Western Kentucky Energy's Coleman Station. The most successful was a combination of continuous-flight augers and specially designed soft-sediment sampling tubes driven by a Hammerhead drill mounted on an amphibious ARGO vehicle. A total of 51 core samples were recovered and analyzed in 3 ft sections and it was determined that there are 1,354,974 tons of ash in Pond C. Of the over 1.35M tons o… more
Date: September 30, 2005
Creator: Groppo, J.G. & Robl, T.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hollow clay tile wall program summary report

Description: Many of the Y-12 Plant buildings, constructed during the 1940s and 1950s, consist of steel ed concrete framing infilled with hollow clay tile (HCT). The infill was intended to provide for building enclosure and was not designed to have vertical or lateral load-carrying capacity. During the late 1970s and early 1980s, seismic and wind evaluations were performed on many of these buildings in conjunction with the preparation of a site-wide safety analysis report. This analytical work, based on the… more
Date: July 30, 1995
Creator: Henderson, R. Craig; Beavers, James E. & Jones, W. Dale
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

D0 Silicon Upgrade: End Calorimeter Transfer Bridge Design and Installation Procedures

Description: The North Endcap Calorimeter (NEC) is to be moved from the clean room to the north sidewalk in preparation for the final installation on the DO detector center beam. In order to make this move, the cable bridge must be 'flattened' and the NEC lifted to move over it. The detector is moved west, approximately 24 feet, while the moveable counting house remains stationary. This movement allows the cable bridge to 'flatten' i.e. become horizontal. The cable bridge lowering is steadied and stabilized… more
Date: February 25, 1991
Creator: Stredde, H.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Dynamic load test of Arquin-designed CMU wall.

Description: The Arquin Corporation has developed a new method of constructing CMU (concrete masonry unit) walls. This new method uses polymer spacers connected to steel wires that serve as reinforcing as well as a means of accurately placing the spacers so that the concrete block can be dry stacked. The hollows of the concrete block are then filled with grout. As part of a New Mexico Small Business Assistance Program (NMSBA), Sandia National Laboratories conducted a series of tests that dynamically loaded … more
Date: February 1, 2010
Creator: Jensen, Richard Pearson
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Static load test of Arquin-designed CMU wall.

Description: The Arquin Corporation has developed a new method of constructing CMU (concrete masonry unit) walls. This new method uses polymer spacers connected to steel wires that serve as reinforcing as well as means of accurately placing the spacers so that the concrete block can be dry stacked. The hollows of the concrete block used in constructing the wall are then filled with grout. As part of a New Mexico Small Business Assistance Program (NMSBAP), Sandia National Laboratories conducted a series of t… more
Date: December 1, 2008
Creator: Jensen, Richard Pearson & Cherry, Jeffery L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Finite element analyses of continuous filament ties for masonry applications : final report for the Arquin Corporation.

Description: Finite-element analyses were performed to simulate the response of a hypothetical vertical masonry wall subject to different lateral loads with and without continuous horizontal filament ties laid between rows of concrete blocks. A static loading analysis and cost comparison were also performed to evaluate optimal materials and designs for the spacers affixed to the filaments. Results showed that polypropylene, ABS, and polyethylene (high density) were suitable materials for the spacers based o… more
Date: August 1, 2008
Creator: Quinones, Armando, Sr. (Arquin Corporation, La Luz, NM); Bibeau, Tiffany A. & Ho, Clifford Kuofei
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DEVELOPMENT OF A SENSOR NETWORK TEST BED FOR ISD MATERIALS AND STRUCUTRAL CONDITION MONITORING

Description: The P Reactor at the Savannah River Site is one of the first reactor facilities in the US DOE complex that has been placed in its end state through in situ decommissioning (ISD). The ISD end state consists of a grout-filled concrete civil structure within the concrete frame of the original building. To evaluate the feasibility and utility of remote sensors to provide verification of ISD system conditions and performance characteristics, an ISD Sensor Network Test Bed has been designed and deplo… more
Date: July 6, 2011
Creator: Zeigler, K.; Ferguson, B.; Karapatakis, D.; Herbst, C. & Stripling, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Utilization of Low NOx Coal Combustion by-Products. Quarterly Report, January 1 - March 31, 1996

Description: Work performed during the period January 1 through March 31, 1996 is described. Tasks included material characterization of ash; pilot plant testing; product testing for concrete, concrete block/brick, plastic fillers, activated carbon and metal matrix composites; and a market analysis for plastic fillers, activated carbon and carbon black, and market research and development.
Date: December 31, 1996
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A compact neutron detector for a geology application

Description: The authors recently designed and built a compact neutron detector for a geology experiment. The detector had to fit inside a 1.5-in.-diam borehole in a large block of concrete. They attached a gas-filled, 1-in.-diam {sup 3}He tube to a 1-in.-diam electronics preamplifier package of their design. The electronics package consists of a cylindrically shaped, high-voltage section and a single-channel analyzer with a buffered output. The low-voltage components are mounted on a printed-circuit board.… more
Date: December 31, 1991
Creator: Biddle, R. S. & Collinsworth, P. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

EVALUATION OF THE DURABILITY OF THE STRUCTURAL CONCRETE OF REACTOR BUILDINGS AT SRS

Description: The Department of Energy (DOE) intends to close 100-150 facilities in the DOE complex using an in situ decommissioning (ISD) strategy that calls for grouting the below-grade interior volume of the structure and leaving the above-grade interior open or demolishing it and disposing of it in the slit trenches in E Area. These closures are expected to persist and remain stable for centuries, but there are neither facility-specific monitoring approaches nor studies on the rate of deterioration of th… more
Date: February 28, 2011
Creator: Duncan, A. & Reigel, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Decontamination Project for Cell G of the Metal Recovery Facility at Oak Ridge National Laboratory, Oak Ridge, Tennessee

Description: The goal of the decontamination effort in Cell G at the Metal Recovery Facility, Building 3505, located at the Oak Ridge National Laboratory, was two-fold: to determine the effectiveness of the dry decontamination technique employed and to provide data required to assess whether additional decontamination using this method would be beneficial in the eventual decommissioning of the facility. Allied Technology Group (ATG) was contracted to remove a portion of the concrete surface in Cell G by a t… more
Date: February 1, 1994
Creator: Mandry, G. J. & Grisham, R. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Characterization of Slow Orbit Motion in the SPEAR3

Description: SPEAR3 is a third-generation synchrotron light source storage ring. The beam stability requirements are {approx}10% of the beam size, which is about 1 micron in the vertical plane. Hydrostatic level system (HLS) measurements show that the height of the SPEAR3 tunnel floor varies by tens of microns daily. We present analysis of the HLS data, including accounting for common-mode tidal motion. We discuss the results of experiments done to determine the primary driving source of ground motion. We p… more
Date: July 9, 2012
Creator: Sunilkumar, Nikita; Gassner, Georg; Safranek, James & Yan, Yiton
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Wall collapse]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 4, 1982, 5:00 p.m.
Duration: 1 minute 38 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Utilization of low NOx coal combustion by-products. Quarterly report, July 1--September 30, 1996

Description: The objective of this project was to commercialize fly ash beneficiation at various facilities around the country. The paper describes laboratory characterization of fly ash samples, pilot plant testing, product testing, and market and economic analyses. Products include concrete, concrete blocks and bricks, plastic fillers, activated carbon, and metal matrix composites.
Date: December 31, 1996
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

LWA demonstration applications using Illinois coal gasification slag: Phase II. Technical report, 1 March--31 May 1994

Description: The major objective of this project is to demonstrate the suitability of using ultra-lightweight aggregates (ULWA) produced by thermal expansion of solid residues (slag) generated during the gasification of Illinois coals as substitutes for conventional aggregates, which are typically produced by pyroprocessing of perlite ores. To meet this objective, expanded slag aggregates produced from an Illinois coal slag feed in Phase I will be subjected to characterization and applications-oriented test… more
Date: September 1, 1994
Creator: Choudhry, V. & Steck, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final Technical Report: Intensive Quenching Technology for Heat Treating and Forging Industries

Description: Intensive quenching (IQ) process is an alternative way of hardening (quenching) steel parts through the use of highly agitated water and then still air. It was developed by IQ Technologies, Inc. (IQT) of Akron, Ohio. While conventional quenching is usually performed in environmentally unfriendly oil or water/polymer solutions, the IQ process uses highly agitated environmentally friendly water or low concentration water/mineral salt solutions. The IQ method is characterized by extremely high coo… more
Date: December 21, 2005
Creator: Aronov, Michael A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Remaining Sites Verification Package for the 100-B-18, 184-B Powerhouse Debris Pile, Waste Site Reclassification Form 2007-020

Description: The 100-B-18 Powerhouse Debris Pile contained miscellaneous demolition waste from the decommissioning activities of the 184-B Powerhouse. The debris covered an area roughly 15 m by 30 m and included materials such as concrete blocks, mixed aggregate/concrete slabs, stone rubble, asphalt rubble, traces of tar/coal, broken fluorescent lights, brick chimney remnants, and rubber hoses. In accordance with this evaluation, the verification sampling results support a reclassification of this site to I… more
Date: November 30, 2007
Creator: Dittmer, L. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Remaining Sites Verification Package for the 132-F-1, 141-F Chronic Feeding Sheep Barn, Waste Site Reclassification Form 2006-029

Description: The 132-F-1 site is the former location of the 141-F Chronic Feeding Sheep Barn that was part of the experimental animal farm at the 100-F Area. It was an L-shaped concrete block building with a concrete floor and concrete animal pens located both inside and outside the building. The 141-F Building was demolished in 1977 following relocation of animal research to the 300 Area. The results of verification sampling demonstrated that residual contaminant concentrations do not preclude any future u… more
Date: August 23, 2006
Creator: Dittmer, L. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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