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  • Automated Construction of Expeditionary Structures (ACES): Energy Modeling

    Abstract: The need to conduct complex operations over time results in U.S. forces remaining in deployed locations for long periods. In such cases, more sustainable facilities are required to better accommodate and protect forward deployed forces. Current efforts to develop safer, more sustainable operating facilities for contingency bases involve construction activities that redesign the types and characteristics of the structures constructed, reduce the resources required to build, and reduce resources needed to operate and maintain the completed facilities. The Automated Construction of Expeditionary Structures (ACES) project was undertaken to develop the capability to “print” custom-designed expeditionary structures on demand, in the field, using locally available materials with the minimum number of personnel. This work investigated large-scale automated “additive construction” (i.e., 3D printing with concrete) for construction applications. This document, which documents ACES energy and modeling, is one of four technical reports, each of which details a major area of the ACES research project, its research processes, and associated results, including: System Requirements, Construction, and Performance; Energy and Modeling; Materials and Testing; Architectural and Structural Analysis.
  • Comparison of Antifungal Efficiencies of Photocatalytic and Antimicrobial-Infused Coatings: Evaluation of Five Antimicrobial Coatings Using Standard Test Methods

    Abstract: New buildings are being constructed and existing buildings retrofitted to be more energy efficient to meet increasingly stringent Department of Defense (DoD) energy standards. Although these standards save energy and lower operational costs, they also limit fresh air within a structure and can cause a buildup of harmful substances in indoor environments. Of particular concern are molds, which can put building occupants at risk and damage infrastructure. One possible solution to this increasing Army problem is to coat building materials with photocatalytic paints, which have the ability to both destroy microorganisms as well as the toxic byproducts they produce. This work compared two next-generation photocatalytic coatings against three more traditional antimicrobial-infused coatings for their ability to resist fungal contamination using three accelerated test conditions. Under each test condition the photocatalytic coatings were found to perform poorly compared to the antimicrobial-infused coatings. Moreover, the control coating, which contained no active antimicrobial (standard latex paint), performed as well as or better than all the antimicrobial coatings tested. This suggested that there may be little benefit to using antimicrobial coatings to inhibit fungal colonization over a standard latex paint; however, further testing is required to confirm this perception.
  • PUBLICATION NOTICE: Enhancing Army Energy Culture with Behavioral Approaches

    Abstract: Facility energy efficiency efforts too often underperform because of people’s choices and actions in their use of technology. Recognizing this challenge, Army energy guidance calls for establishing an informed energy-conscious culture of stewardship to meet mission resilience requirements. However, the details for implementing that guidance have not been established. This report provides two primary products to address these needs: (1) a Human-Centered Efficiency Process (HCEP), which is a coordinated nine-step process to use best practices in energy behavior, and (2) an outline of a strategy to build a culture of efficiency. The practical HCEP is synthesized from energy management, change management, and Army processes (After Action Report [AAR] and Commander’s Intent), as well as insights from federal personnel. It is built around an organizational framework and a continuous improvement process that systematically enables people to use technology effectively and efficiently. The culture strategy consists of a method of assessing the current status of the Army’s energy culture; a vision of a desired end state; and a path toward change.