WorldCat Identities

Construction Engineering Research Laboratories (U.S.)

Works: 725 works in 1,114 publications in 1 language and 30,382 library holdings
Roles: Monitor, Originator
Classifications: TH223,
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Most widely held works about Construction Engineering Research Laboratories (U.S.)
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Most widely held works by Construction Engineering Research Laboratories (U.S.)
Demonstration of remote monitoring technology for cathodic protection systems, phase II( Book )

2 editions published between 1997 and 1998 in English and held by 201 WorldCat member libraries worldwide

Guidelines for quality assurance inspection of commercial activities contracts for real property maintenance activities by James H Johnson( Book )

2 editions published in 1993 in English and held by 150 WorldCat member libraries worldwide

Reflector microphones for field recording of natural sounds by George W Swenson( Book )

3 editions published in 1998 in English and held by 139 WorldCat member libraries worldwide

Directional microphone systems for field recording of sounds in the air usually involve either a parabolic reflector to focus the sound waves on the microphone (transducer) element, or a linear array of transducers so phased as to respond preferentially to sounds from one directional sector. The latter system (the shotgun" microphone) can be analyzed in a fairly straightforward manner. The reflector system involves a structure comparable to a wavelength in linear dimension, and is therefore not susceptible to the conventional approximate methods of computation. Recently developed computational techniques now permit exact calculation of the directional responses of small reflectors. This work computed the characteristics of a number of small microphone reflectors and linear microphone arrays. A flat reflector microphone for the low-frequency range of 10 to 40 Hz was also described. The study concluded that no directional microphone can, in practice, reproduce sounds with fidelity to the sounds as emitted by the source
Development and testing of plastic lumber materials for construction applications by R Lampo( Book )

3 editions published in 1997 in English and held by 138 WorldCat member libraries worldwide

Investigation of fiberglass-reinforced plastic (FRP) condensate return carrier piping by Orange S Marshall( Book )

3 editions published in 1998 in English and held by 138 WorldCat member libraries worldwide

Composite grids for reinforcement of concrete structures( Book )

2 editions published in 1998 in English and held by 135 WorldCat member libraries worldwide

This research investigated a new concept that uses fiber-reinforced plastic (FRP) composite grid to reinforce concrete structural members. Prefabricated two- and three-dimensional FRP grid structures were investigated as a possible alternative to conventional one-dimensional steel reinforcement rods. Currently available commercial grid manufacturing techniques were found to be inadequate due to material flaws, poor fiber volume fraction, and low strength and stiffness. Through laboratory investigations, significant improvements in fiber volume fraction in orthogrid and isogrid systems were achieved. Laboratory-scale samples demonstrated excellent results under loading tests. Concurrent investigations showed that although the FRP grid-reinforced concrete is more flexible than steel-reinforced concrete, its post failure deformation was pseudo-ductile, characterized by continuous structural deformation through multiple low-level brittle failures before the onset of catastrophic failure. It was also found that a combined concrete/composite reinforcement structure, with a higher volume of FRP composite fraction in the concrete, would substantially increase stiffness, load capacity, and postfailure concrete containmenL This study addressed not only the possible replacement of steel reinforcement with composite grids, but also investigated enhancement of the composite application through load-sharing with steel reinforcement in a complementary fashion. Various manufacturing improvements also were explored, including the novel use of disposable toolings
Chilled water storage cooling system at Fort Jackson, SC by C. W Sohn( Book )

3 editions published in 1998 in English and held by 135 WorldCat member libraries worldwide

For many Army installations, the electrical demand charge of their utility bills can be as high as 50 percent of the total bill. One effective way to reduce peak electrical demand and electrical utility costs is by use of storage cooling systems. To curb the anticipated growing cost of the electrical utility at Fort Jackson, the engineers at the Directorate of Public Works (DPW), Fort Jackson, decided to install a 2.25M gal capacity chilled water storage (CWS) cooling system for the Energy Plant No. 2, which serves more than half of the Fort's cooling load. During the first year operation (1996-1997), the system saved about $0.43M in electrical utility bill charges from reduced on peak electrical demand and reduced energy consumption for cooling. This report documents the design, construction, operation, and performance of the system
Development and demonstration of advanced design composite structural component( Book )

2 editions published in 1998 in English and held by 135 WorldCat member libraries worldwide

Composite materials have been demonstrated to be effective in high-performance applications where traditional materials fail, especially in aggressively corrosive environments. Many corrosion-resistant applications are industrial load-bearing elements, but the construction industry has mainly used composites in nonstructural applications. Most fiber-reinforced polymer (FRP) composites have not been optimized for civil engineering applications, and conventional civil engineering design procedures may not effectively exploit the unique mechanical properties of FRP composites or adequately define potential failure mechanisms. The objective of this work was to develop, test, and demonstrate optimized, advanced-design composite structural components for civil engineering applications. First, new glass FRP fiber architectures were developed, tested, and optimized. Next, using the optimized fiber architecture, a pultruded interlocking hexagonal structural system called the H-Deck was designed, tested, and compared with performance standards published by the American Association of State Highway and Transportation Officials (AASHTO). Finally, two short-span FRP composite H-deck demonstration bridges were successfully constructed. Detailed results from the testing and optimization phases of the study are documented, and economic analysis suggests that life-cycle costs for properly selected FRP composite H-Deck applications will be lower than for comparable reinforced concrete applications. Information on the commercial availability of the composite H-Deck system is also provided
Management of longleaf pine woodlands for threatened and endangered species by Mary Harper( Book )

4 editions published in 1997 in English and held by 134 WorldCat member libraries worldwide

Longleaf pine woodlands on military installations support multiple uses, including the Department of Defense (DoD) training and testing mission; threatened, endangered, and sensitive species (TES) conservation; and forest commodities (e.g., timber, pine straw) production. This report documents strategies to manage TES and their habitats on a plant community basis, using methods that apply to multiple species, and using methods that apply across the southeastern region of the United States. This report combines the pine flatwoods and sandhills communities because they have several features that link them. Ecological descriptions are provided for each community, along with available information about community occurrences on DoD installations throughout the southeast region. Known occurrences of plant and animal TES associated with
Web-enabled design review and lessons learned by E. William East( Book )

3 editions published in 1998 in English and held by 134 WorldCat member libraries worldwide

The Department of Defense invests significant capital in building new facilities; approximately $11.2 billion in Fiscal Year 1996. Conventional facility delivery processes and practices that were once satisfactory are increasingly expensive, labor intensive, and not fully automated or integrated. State of the art automation technology is the best hope to keep pace with requirements to reduce design and construction errors, reduce resource requirements, and optimize mission performance. This report discusses one aspect of facility delivery; the design review process. The Design Review and Checking System (DrChecks) is the next step in the evolution of previous USACERL developed products to support the technical, design, and Biddability, Constructibility, Operability (BCO) review process. This document describes: (1) the requirements and constraints considered in this research, (2) requirements for an integrated system of lessons learned, (3) minimum requirements to install and test the distribution version of DrChecks, and (4) the steps required to implement a distributed lessons learned system. To test the prototype system requires an Intel Pentium processor and a 2 GB hard drive compatible with HTML 2.0. Client systems must be linked to the Internet using TCP/IP protocols with a minimum connection speed of 9600 bps
Seismic mitigation for equipment at Army medical centers : methods illustrated with examples from Madigan Army Medical Center by James Wilcoski( Book )

3 editions published in 1998 in English and held by 134 WorldCat member libraries worldwide

Medical centers may be the most critical facilities in the response and recovery phase immediately after a damaging earthquake. This report presents observations and makes recommendations for the protection of equipment, many of which support essential functions. These observations are based on a walk-down inspection of Madigan Army Medical Center conducted in December 1996. Protecting critical equipment include, ensuring an adequate load path, providing adequate anchorage, and accommodating differential movement. Observations and recommendations are presented based on effective equipment protection seen at MAMC, anchorage problems seen at MAMC, and load path concerns for well anchored equipment. Lastly several references are listed with highlights on their significance to medical facilities
Alternatives to open burning/open detonation of energetic materials : a summary of current technologies by James L Stratta( Book )

3 editions published in 1995 in English and held by 134 WorldCat member libraries worldwide

U.S. Army Ammunition Plants (AAPs) and load, assemble, and pack (LAP) facilities generate diverse pyrotechnic, explosive, and propellant (PEP) production wastes as part of munitions production activities. These energetic material (EM) wastes and EM contaminated wastes (EMCW) continue to be destroyed by open burning and open detonation (OB/OD), the most common ("first generation") method of EM disposal. Incineration is a currently used, feasible "second generation" treatment option, but has enjoyed poor regulator and public acceptance. Concerns for potential human health risk created by OB/OD at Army installations as well as environmental impacts on the air, soil, and water are forcing the Army to identify and develop alternatives to OB/OD treatment. This document summarizes research initiatives by the U.S. Army Construction Engineering Research Laboratories (CERL) into several "third generation" pretreatment and treatment technologies for EM and EMCW, including: cryogenic cutting, supercritical CO2 extraction and hydrothermal oxidation, hydromilling, wet air oxidation, hydrothermal oxidation, biodegradation, and electrochemical treatment. Results are also given from a waste generation survey of nine Army Materiel Command (AMC) facilities, and of a study that characterizes the emissions from burning propellants under experimental conditions
Development of recycled polymer blends for thermal spray applications by J Brogan( Book )

3 editions published in 1997 in English and held by 133 WorldCat member libraries worldwide

A proposed rule to implement Section 183(e) of the Clean Air Act amendments (1990) will further restrict the volatile organic compound (VOC) content of rust-preventing coatings. Thermal spray polymers represent one option for protecting steel structures while complying with the new VOC restrictions. Thermal spray technology can apply polymer coatings to many different substrate materials at various thicknesses and under wide range of ambient conditions. Potential benefits of thermal spray polymers could be extended by blending post-consumer commingled polymers (PCCP) into coating feedstock materials; thermal spray polymers have the potential both to lower material costs and reduce the volume of the solid waste stream. This research investigated and demonstrated high-molecular weight and commingled/post-consumer recycled polymer blends as low-VOC thermal spray coatings. It is concluded that the incorporation of PCCP into virgin thermal spray polymer is associated with some loss of coating performance. Also, cost savings resulting from blending 25 percent PCCP with 75 percent virgin polymer are insignificant compared to the total cost of a recoating job using other VOCcompliant systems. Therefore, the blends investigated here probably will not have significant commercial usefulness, and they are not recommended for corrosion protection of steel structures
Fragility testing of a power transformer bushing : demonstration of CERL Equipment Fragility and Protection Procedure by James Wilcoski( Book )

3 editions published in 1997 in English and held by 133 WorldCat member libraries worldwide

This report presents a demonstration of the CERL Equipment Fragility and Protection Procedure (CEFAPP) as used in the testing of a large power transformer bushing. CEFAPP defines the capacity of critical equipment by tests conducted on a shake table. Equipment capacity is defined in terms of amplitude of motions with respect to frequency that cause equipment failure. These spectral amplitudes can be defined in terms of either response spectrum or support motion spectral amplitude, both plotted with respect to frequency. Equipment failure may comprise loss of function, physical damage, or some measured response that is determined by the test engineer to be unacceptably high. The bushing failure mode defined in this application was leaking and slippage at the porcelain flange interface. The equipment capacity as defined by this failure envelope is later compared with the demand as defined by the user design spectra. This demand may be site specific or code based response spectra, or spectral motions at equipment installation location based on a detailed numerical analysis of the building in which the equipment is to be installed. For the bushing presented here, capacity is defined in terms of response spectrum of the shake table support motions that can be compared with site specific response spectra or design response spectra based on IEEE 693. Technical details of CEFAPP may be found in a companion report, USACERL Technical Report 97/58
Transformation of TNT to triaminotoluene by mixed cultures incubated under methanogenic conditions by Philip Hwang( Book )

3 editions published in 1998 in English and held by 133 WorldCat member libraries worldwide

2,4,6-Trinitrotoluene (TNT) is an explosive widely used by the military. Although it is no longer manufactured in the United States, large amounts of wastewater are generated annually from load, assembly, and packing (LAP), and demilitarization operations. Granular activated carbon adsorption is the standard technology for treating wastewater containing TNT and maintaining discharges within the limits established under the National Pollutant Discharge Elimination System. Previous studies evaluating biological treatment of pink water using anaerobic fluidized bed granular activated carbon bioreactors have been promising. Our objectives for this work were to study the end-products produced during the anaerobic biodegradation of TNT and study the effect of adding cosubstrates on TNT degradation. These studies demonstrated TNT was initially reduced to a variety of reduction products that culminated in the formation of triaminotoluene (TAT). TAT was susceptible to further degradation under anaerobic conditions, but its fate was not determined. The addition of ethanol and glucose enhanced the degradation of TNT, but acetate did not. These studies demonstrate, for the first time, near stoichiometric formation of TAT in a mixed culture incubated under methanogenic conditions, and demonstrate the importance of adding reduced cosubstrates to enhance the formation of TAT
Management of maritime communities for threatened and endangered species by Sophia Gehlhausen( Book )

3 editions published in 1998 in English and held by 132 WorldCat member libraries worldwide

Maritime ecosystems along the Atlantic and Gulf coasts support the military mission of the United States Department of Defense (DoD). Since the DoD mission has not required large-scale urbanization of the coast, these ecosystems also provide high quality habitat for several federally threatened and endangered plant and animal species (TES). TES conservation is compatible with military land use, as long as native plant communities remain subject to the cycles of disturbance and regeneration characteristic of the coastal zone. This report discusses four vegetation types that comprise the natural areas that support maritime TES: the overwash community, the sand dune community, the maritime shrub community, and the evergreen maritime forest community. Disruption of the natural processes of beach erosion and rebuilding through construction of seawalls, jetties, artificial dunes and beaches, roads, and urban areas is probably the most harmful human impact to maritime communities and their associated TES. Since the native maritime plant communities are relatively resilient to military training activities, conservation of this high quality TES habitat is not problematic on DoD lands. Protection of TES during critical times such as migration and the breeding season may be accommodated through seasonal or spatial restrictions on activities
Demographics of the Golden-cheeked warbler (Dendroica chrysoparia) on Fort Hood, Texas by Leslie A Jette( Book )

4 editions published in 1998 in English and held by 126 WorldCat member libraries worldwide

The Golden-cheeked Warbler (Dendroica chrysoparia) is a federally endangered migratory passerine that has its breeding range contained in the central Texas area that includes Fort Hood. Its listing as endangered in 1991 was a result of the rapid degradation and increasing fragmentation of habitat, causing a decline in their population. To assist in conservation and recovery of the Golden-cheeked Warbler and comply with the Endangered Species Act, environmental managers need information on the demographic parameters of the population on Fort Hood. Researchers surveyed and documented the Golden-checked Warbler on Fort Hood, Texas between 1991 and 1996. The population remained relatively stable, with a slight decrease in 1996. The average return rate for males banded as adults was 45.5%; for males banded as juveniles the average was 16.9%. Dispersal distances for males banded as adults averaged 223 m. Dispersal distances for males banded as juveniles were significantly greater, with an average of 4,040 m. Densities of territorial males remained relatively stable between 1992 and 1996, with a peak density of 28 males per 100 ha (average of 18 males per 100 ha). Productivity of males within an intensive study area averaged 2.0 young per mated male
Low-carbon, age-hardenable steels for use in construction : a review by R Weber( Book )

3 editions published in 1996 in English and held by 109 WorldCat member libraries worldwide

High-strength low-alloy (HSLA) steels are being used extensively in U.S. Naval shipbuilding and are being substituted for quenched and tempered HY-80 steel plate. This report examines other applications for the use of HSLA steels. They were studied to determine possible uses in U.S. Army Corps of Engineers construction projects, the current technology gaps, and the research necessary to fill those gaps. HSLA steels offer some benefits over conventional steels of the same strength level. They are virtually immune to hydrogen-assisted cracking in the heat affected zone of welds, which allows HSLA steel to be welded without preheating. However, at higher strength levels the weld metals used may require preheat to prevent weld metal hydrogen-assisted cracking. The low-carbon, fine grained microstructure that results from typical processing yields a favorable combination of excellent fabricability, strength, and toughness to HSLA steel that adds to its usefulness and gives it clear advantages over quenched and tempered construction steels. However, fatigue and buckling may limit direct design substitutions of HSLA steel in Corps new construction application. HSLA steel is resistant to hydrogen-assisted cracking but susceptible to reheat cracking, and applications requiring post weld heat treatment are not recommended. Also, local brittle zones may result in low toughness
REMR management systems--navigation structures condition rating procedures for tainer dam and lock gates by Lowell Greimann( Book )

3 editions published in 1995 in English and held by 105 WorldCat member libraries worldwide

The mission of the U.S. Army Corps of Engineers has been shifting from constructing new facilities to maintaining the large inventory of existing facilities. The objective of this work was to develop an inspection and rating system that uniformly and consistently describes the current condition of tainter dam and lock gate structures. The objective was achieved by conducting site visits and field investigations with experts from the U.S. Army Corps of Engineers, and by using the experts' opinions to develop the rules which form the basis of the rating system. This document provides a general description of the inspection and rating system, which includes the definition of a condition index and a description of tainter gate distresses. This is followed by a detailed description of the inspection and rules for calculating condition indexes for tainter gates. (MM)
REMR management systems--navigation and reservoir structures, condition rating procedures for concrete in gravity dams, retaining walls, and spillways by Rupert E Bullock( Book )

3 editions published in 1995 in English and held by 102 WorldCat member libraries worldwide

The purpose of this report is to describe a proposed system for determining a condition index (Cl) that numerically rates the condition of the concrete in a gravity dam monolith, retaining wall, or spillway on a scale of 1 to 100 by evaluating each concrete distress objectively. The rating system described herein allows the CI to be determined by the use of a visual investigation with limited equipment. The rating is related primarily to structural integrity and secondarily to serviceability. The CI procedure was developed by assigning deduct values to defects which include the following distress categories: alignment, cracking (checking, D-cracking, pattern, horizontal, vertical and transverse, vertical and horizontal, diagonal, random, and longitudinal floor), deposits, leakage, steel deterioration (corrosion stains, reinforcing, prestressing, and armor), and volume loss (abrasion, honeycomb, pop-outs, scaling, spalling, and disintegration). The deduct values are, in part, subtracted from 100 to establish the CI. Primary deduct values were determined with the intent of obtaining a CI of 40 when deterioration of a concrete monolith caused the safety of that monolith to become questionable. Nominal deduct values were assigned for defects in serviceability. The CI should be determined on at least one of each type of monolith and the more distressed monoliths. At least 20 percent of the monoliths should be rated. (MM)
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Alternative Names

controlled identityConstruction Engineering Research Laboratory


U.S. Army Construction Engineering Research Laboratories

United States. Army. Corps of Engineers. Construction Engineering Research Laboratories

United States. Construction Engineering Research Laboratories


English (64)