Publication Notices

Notifications of New Publications Released by ERDC

Contact Us

      

  

    866.362.3732

   601.634.2355

 

ERDC Library Catalog

Not finding what you are looking for? Search the ERDC Library Catalog

Results:
Category: Publications: Engineer Research & Development Center (ERDC)
Clear
  • Unmanned Aircraft Systems and Tracer Dyes Potential for Monitoring Herbicide Spray Distribution

    Purpose: Chemical control of nuisance aquatic vegetation has long been the most widely utilized management tool due to its high level of efficacy, limited environmental impacts, and relatively low cost. However, unprecise application of herbicides can lead to uncontrolled invasive plants and unintended management costs. Therefore, precision herbicide delivery techniques are being developed to improve invasive plant control and minimize impacts to non-target plants. These technological advancements have the potential to enhance aquatic ecosystem protection from invasive species while reducing associated management costs. Despite the benefits of using registered herbicides for aquatic plant control in efforts to restore aquatic habitats, their use is often misunderstood and opposed by public stakeholders. This can lead to significant challenges related to chemical control of nuisance aquatic vegetation. Thus, US Army Corps of Engineers (USACE) Districts seek improved methods to monitor and quantify the distribution (i.e., amount of herbicide retained on plant foliage compared to those deposited into the water column) of herbicides applied in aquatic systems. Monitoring herbicide movement in aquatic systems can be tedious and costly using standard analytical methods. However, since the inert fluorescent tracer dye Rhodamine WT (RWT) closely mimics product movement in the aquatic environment it has been used as a cost-effective surrogate for herbicides tracing.
  • Rapid Algae Flotation Techniques

    Abstract: Some harmful algae produce mucilage or extracellular polymeric substances useful for flotation. This study evaluated natural polysaccharides to determine effects on algal flotation with DAF. Food-grade gums (xanthan gum, guar gum, gum arabic, gellan gum, and diutan gum) were tested with cyanobacteria cultures singly and in combination with commercial flocculants (including Tramfloc 222 and Tramfloc 300). Gum arabic alone had no effect when evaluated at concentrations between 10 mg/L and 5,000 mg/L. However, the combination of gum arabic and Tramfloc 300 yielded higher algal flocculation than Tramfloc 300 alone. The combination of xanthan gum (anionic) and guar gum (cationic) did not perform at the level of the combined xanthan gum and Tramfloc 222 in either flocculation or flotation of algae. Tramfloc 222 and xanthan gum; however, yielded effective flocculation seemingly resistant to changes in interfering factors such as turbulence, pH, and temperature. Furthermore, the combination of xanthan gum and Tramfloc 222 provided the most effective flotation and flocculation independent of pH effects. The results suggest that anionic polysaccharides can be used to increase the efficacy of cationic coagulants such as Tramfloc 222.
  • Burgess-Capps Cabin: Historic Context, Maintenance Issues, and Measured Drawings

    Abstract: The Burgess-Capps Cabin is located on the US Air Force Academy (USAFA), Colorado, and was placed on the National Register of Historic Places (NRHP) in 1975 under the name of “Pioneer Cabin.” The building is currently not occupied but used as a history interpretive site. It is one of the few log cabins that remain in this part of Colorado from the time of European settlement. All buildings, especially historic ones, require regular planned maintenance and repair. The most notable cause of historic build-ing element failure or decay is not the fact that the historic building is old, but rather, it is caused by incorrect or inappropriate repair or basic neglect of the historic building fabric. This document is a maintenance manual compiled with as-is conditions of construction materials of the cabin. The secretary of interior’s guidelines on rehabilitation and repair per material are discussed to provide the cultural resources manager at USAFA a guide to maintain this historic building. Additional chapters include information regarding the historic materials and a structural analysis. This report satisfies Section 110 of the National Historic Preservation Act (NHPA) of 1966 as amended and will help USAFA’s Cultural Resources Management Office to manage this historic building.
  • José María Gil Adobe: Historic Context, Maintenance Issues, Measured Drawings, and Adaptive Reuse

    Abstract: The José María Gil Adobe, located on Fort Hunter Liggett, California, was added to the National Register of Historic Places (NRHP) in 1974. The building has been vacant since the early 1970s. It is a fine example of a small adobe ranch house possessing character-defining features of its period of significance of the mid-19th century on its exterior, interior, and within the site itself. This document is a reconstruction, repair, maintenance, and adaptive reuse report compiled with photographed, written, and drawn as-is conditions of construction materials of the José María Gil Adobe building and site. The building was 3D scanned to obtain the necessary information for the measured drawings. The secretary of the interior’s guidelines on rehabilitation and repair per material are discussed to provide the cultural resources manager at Fort Hunter Liggett a guide to maintain this historic building. Rehabilitation is the best option for the successful reuse of the José María Gil Adobe as it will move the building from a vacant status to an occupied status. It is highly likely that this building can again serve an appropriate use as outlined in Section 11, reflecting its appearance in the early 20th century or WWII periods.
  • Beneficial Use of Dredged Material: A Workshop to Explore Engineered Drainage Soils for Stormwater Management

    PURPOSE: Beneficial use of dredged material in engineered soils is an alternative to achieve environmental and economic sustainability for waterway operations. Engineered soils can combine navigation and environmental dredging with municipal and commercial waste streams to create a valuable commercial soil product while reducing public operating costs, creating economic opportunity, and creating better soil products for lower cost. The need, opportunities, and challenges to establishing an Illinois Waterway-based commercial soil industry were explored by river, highway, stormwater, environmental resource managers, and industry experts in a workshop in Peoria, IL, on 4–5 September 2019.
  • Full-Scale Trafficability Testing of Prototype Submersible Matting Systems

    Abstract: This report describes the full-scale evaluation of prototype submersible matting systems (SUBMAT) at a test site at the US Army Engineer Research and Development Center’s Vicksburg, Mississippi, site. The SUBMAT prototypes were designed to bridge the gap between high and low tide at a beach interface to enable 24-hour operation at an expeditionary watercraft landing site. This phase of the SUBMAT prototype development was intended to determine prototype system durability by applying military vehicle loads representing a combat brigade insertion across a littoral zone. The two mat systems evaluated in this study were the PYRACELL Road Building System (PRBS) and a basaltic rebar mat system. The results of the study showed that the PRBS system was able to sustain 1,000 Medium Tactical Vehicle Replacement, 350 Heavy Expanded Mobility Tactical Truck, and over 150 M1A1 main battle tank passes without significant damage. The basaltic rebar mat failed early in the test and was removed from further consideration for the SUBMAT application. Observations and lessons learned from this phase of the prototype PRBS development will be used to improve the PRBS design and modify its installation procedures for improved efficiency.
  • Historic Context for Railroads at Fort McCoy, Wisconsin

    Abstract: This report provides a historic context for the railroads that operated within the present-day boundaries of Fort McCoy. The objective of this historic context is to deliver a useful reference for future evaluations of railroad-related resources in the installation. Ultimately, the report is in-tended to save the installation time in determining potential areas of significance for future evaluations. This is accomplished through the creation of a broad historic context for railroading in the Midwest, establishing a survey of railroad history at Fort McCoy, and providing examples of areas of significance and National Register of Historic Places (NRHP) criteria commonly applied to the historic railroad resources of the Midwest. This report does not provide NRHP eligibility recommendations for any specific resources; however, possible research questions for further study are posited in the concluding chapter.
  • Pattern Language for a More Resilient Future

    Abstract: The Department of the Army (DA) manages millions of acres of land for military use. Military installations and other US DoD operations contain architectural structures and civil infrastructure that require continuous improvements to resiliency. This includes resiliency in the form of protection against both natural and man-made disasters. This document seeks to identify multiple risks to infrastructure and people and encourages open dialogue for creative solutions. Designers and engineers as well as other disciplines can work together to achieve higher resiliency in both new and renovated work. The following sections are created to provide a starting guide, utilizing various tools to discover the best resilient design strategies for your building. This special report will argue for actionable design strategies; drawing inspiration from historical building forms, while also looking toward emerging technologies that should be further explored.
  • A Regional Guidebook for Applying the Hydrogeomorphic Approach to Assessing Wetland Functions of Forested Riverine Wetlands in Alluvial Valleys of the Piedmont Region of the United States

    Abstract: The Hydrogeomorphic (HGM) approach is used for developing and applying models for the site-specific assessment of wetland functions. It was initially designed for use in the context of the Clean Water Act Section 404 Regulatory Program permit review process to analyze project alternatives, minimize impacts, assess unavoidable impacts, determine mitigation requirements, and monitor the success of compensatory mitigation. However, a variety of other potential uses have been identified, including the design of wetland restoration projects, projecting ecological outcomes, developing success criteria and performance standards, and adaptive monitoring and management of wetlands. This guidebook provides an overview of the HGM approach including classification and characterization of the principal alluvial riverine wetlands identified in the Piedmont physiography. Eight potential subclasses of Piedmont wetlands, including Headwater, Low- and Mid-gradient Riverine, Floodplain Depression, Footslope Seeps, Flats, Precipitation Depressions, and Fringe wetlands were recognized. However, the occurrence of Flats, Precipitation Depressions, and Fringe wetlands in the Piedmont, are uncommon and not generally associated with alluvial riverine systems which is the subject of this Guidebook. Detailed HGM assessment models and protocols are presented for the five most common Piedmont riverine subclasses: Headwater, Low- and Mid-gradient Riverine, Floodplain Depression, and Footslope Seep. For each wetland subclass, the guidebook presents (a) the rationale used to select the wetland functions considered in the assessment process, (b) the rationale used to select assessment models, and (c) the functional index calibration curves developed from reference wetlands used in the assessment models. The guidebook outlines an assessment protocol for using the model variables and functional indices to assess each wetland subclass. The appendices provide field data collection forms. In addition, an automated spreadsheet model is provided to make calculations.
  • Development and Characterization of Ultra-High-Performance Concrete for the Rehabilitation of Navigation Lock Structures

    Abstract: This report details the history of vertical lock wall repairs and the development and laboratory characterization of an ultra-high-performance concrete (UHPC) using locally sourced materials for improved durability of lock walls subjected to impact and abrasion from navigational vessels. This UHPC, referred to as Lock-Tuf, has been designed for use in a precast environment with ambient curing methods and serves as a material proof-of-concept for future lock wall rehabilitations. Mechanical properties such as unconfined compressive strength, flexural response, tensile capacity, impact resistance, and abrasion resistance have been quantified experimentally.