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Tag: P-8 Poseidon
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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.
  • ERDC team uses unique tool in Navy aircraft runway testing

    Since aircraft have been used as wartime weapons, the U.S. Army Engineer Research and Development Center (ERDC) has led the charge of creating tools that allow those planes to land anywhere in the world. Today, that mission has not changed, and the Geotechnical and Structures Laboratory (GSL) is using a unique machine to better understand the Navy’s P-8 Poseidon and how it distresses temporary, rapidly constructed runways.