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  • Full-Scale Evaluation of Saltwater Concrete for Airfield Pavement Construction and Repair

    Abstract: The US Navy has a need to rapidly construct concrete facilities onshore to support contingency operations. Mixing water for concrete is typically specified to be freshwater; however, in many scenarios there are limited amounts of freshwater available for construction. Thus, use of readily available saltwater would be advantageous. This project’s objective was to evaluate the suitability of saltwater as a replacement for freshwater for producing concrete airfield pavement under relevant operational scenarios. Three full-scale test sections were constructed, and performance was evaluated in the context of relatively short design life requirements. First, direct comparison slabs of freshwater and saltwater concrete were constructed and exposed to ambient environmental conditions for one year; periodic concrete strength measurements were made. Next, 8 in. thick and 11 in. thick saltwater concrete pavements were constructed then subjected to P-8 aircraft accelerated loading. Finally, four airfield damage repair techniques were executed using saltwater and subjected to accelerated P-8 aircraft loading. Saltwater concrete performance was found to be similar to freshwater concrete for all scenarios investigated. The overall conclusion was that saltwater can be used in place of freshwater for concrete airfield pavement construction and repair for short- to medium-term use (1–2 yr) with no meaningful impact to mission requirements.

  • Gridded Surface Subsurface Hydrologic Analysis model version 8.0 released

    The U.S. Army Engineer Research and Development Center’s (ERDC) Coastal and Hydraulics Laboratory (CHL) recently announced the release of version 8.0 of the Gridded Surface Subsurface Hydrologic Analysis (GSSHA) model.

  • Jacksonville District publishes Finding of No Significant Impact for Putnam County Water Supply Project

    JACKSONVILLE, Fla. – The U.S. Army Corps of Engineers (USACE), Jacksonville District announces the publication of a proposed Finding of No Significant Impact (FONSI) for the Putnam County Comprehensive Water Supply Modernization Project, which addresses the provision of design and construction assistance for a publicly-owned, non-federal water-related environmental infrastructure project in northeast Florida.

  • Army Corps shares update on Indian River Inlet repairs

    The U.S. Army Corps of Engineers’ Philadelphia District shared an update regarding ongoing repairs at the Indian River Inlet bulkhead and south jetty in Sussex County, Delaware.

  • USACE Installs First Generators

    The U.S. Army Corps of Engineers Temporary Emergency Power team completed the first installations of generators across western North Carolina yesterday to assist communities with critical power needs.

  • West Point Lake hosts Special Day for Special People event

    On Oct. 3, the U.S. Army Corps of Engineers’ West Point Lake project hosted more than 1,400 participants for the 45th annual Special Day for Special People event, which offered outdoor fun and community engagement. Held at Rocky Point Park, the event was designed to provide individuals with special needs and the elderly with an opportunity to enjoy various activities, including pontoon boat rides, music, and wildlife interactions.

  • “Essayons Isle”

    JACKSONVILLE, Fla. - The U.S. Army Corps of Engineers’ (USACE) Jacksonville District helms the voyage as Skipper, navigating its Intracoastal Waterway to provide a unique, in-person perspective on locations where they, in collaboration with their stakeholder shipmates, are researching the most feasible ways to protect America’s oldest city against coastal flooding.

  • USACE, MassDOT, and FHWA Sign Agreement for Sagamore Bridge Replacement

    The U.S. Army Corps of Engineers (USACE), Massachusetts Department of Transportation (MassDOT), and

  • USACE seeks public comment for Draft Environmental Assessment for Sand Creek Flowlines at Garrison Project, ND

    The U.S. Army Corps of Engineers Omaha District announced a draft environmental assessment is available to review for Rough Rider Operating, LLC and Oasis Petroleum North America, LLC requesting the reissuance of a real estate easement from USACE for the continued occupation of six existing oil- and gas-related production flowlines installed in 2014 via horizontal directional drilling (HDD) and put into service in 2015. These flowlines cross under Sand Creek, on federal lands administered by the USACE Garrison Dam/ Lake Sakakawea Civil Works Project near the City of Williston, Williams County, North Dakota.

  • Ribbon-cutting ceremony to mark completion of vital levee project milestone

    Local, state and federal officials will host a ribbon-cutting ceremony to mark the completion of Phase I of the Manhattan levee project in Manhattan, Kansas, on Wednesday, October 9, 2024. The project, which is a partnership between the City of Manhattan and the Kansas City District, U.S. Army Corps of Engineers, will provide crucial flood risk reduction for the city. Through construction upgrades, the Manhattan Levee System will have substantially enhanced reliability and structural integrity.