DOCUMENT
A -- This Broad Agency Announcement seeks technologies/methodologies to advance the use of pre-stressed or post-tensioned concrete in design/construction of piers to minimize/eliminate cracking under load - Attachment
- Notice Date
- 7/7/2011
- Notice Type
- Attachment
- NAICS
- 541712
— Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)
- Contracting Office
- N62583 SPECIALTY CENTER ACQUISITIONS NAVFAC 1205 Mill Road Building 850 Port Hueneme, CA
- Solicitation Number
- N6258311R0588
- Response Due
- 8/10/2011
- Archive Date
- 8/10/2011
- Point of Contact
- Michael Oesterle 805-982-3398 Technical - Michael Oesterle; 805-982-3398; michael.oesterle@navy.mil
- E-Mail Address
-
cts
- Small Business Set-Aside
- N/A
- Description
- A majority of the active waterfront structures used by the Navy were constructed more than 50 years ago. In many of these structures concrete damage due to corrosion of reinforcing steel has resulted in significant costs for maintenance and repairs that are required every 10 to 15 years. Many past research programs have been supported to develop impervious concrete materials to reduce corrosion in Navy waterfront RC structures. Several advanced theoretical models have also been developed to predict the rate of chloride ion penetration into the concrete. However, there is a fundamental problem with those approaches for standard reinforced concrete structures: RC structures loaded in flexure are designed to crack under service loads, and once the concrete is cracked the chloride ions will simply use the cracks as highways towards the reinforcing steel, independently of the quality of the concrete. The magnitude and frequency of maintenance and repairs, along with a limited life expectancy, can be expected for all new waterfront structures that do not prevent cracking of all the concrete structural components. Minimization or elimination of cracking in all of the structural components can be achieved with pre-stressed/post-tensioned concrete. Only once this is achieved can the advanced concrete materials be able to perform their intended function. This approach has been followed in the floating Modular Hybrid Pier (MHP), insuring enhanced durability, but not in other waterfront structures. In particular, many piers are still being built that are not floating and use only RC in the majority of the structural components. The purpose of this solicitation is to further develop pre-stressed/post-tensioned strategies that are utilized in the design/construction that are applicable to Navy reinforced concrete piers. The Navy has interest in the following areas: (1) Develop a conceptual design of a prototypical pre-stressed and/or post-tensioned pier deck; (2) Develop a conceptual design for a prototypical pile cap that incorporates pre-stressed and/or post-tensioned concrete; (3) Develop a conceptual design detail for a prototypical deck-to-pile cap connection; (4) Develop a conceptual design detail for a prototypical utility trench; and (5) Develop a conceptual construction cost and schedule of pier concept.
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/spg/DON/NAVFAC/N47408/N6258311R0588/listing.html)
- Document(s)
- Attachment
- File Name: N6258311R0588_BAA_FY11_preStressed.docx (https://www.neco.navy.mil/synopsis_file/N6258311R0588_BAA_FY11_preStressed.docx)
- Link: https://www.neco.navy.mil/synopsis_file/N6258311R0588_BAA_FY11_preStressed.docx
- File Name: N6258311R0588_BAA_SUBMISSION_GUIDANCE.docx (https://www.neco.navy.mil/synopsis_file/N6258311R0588_BAA_SUBMISSION_GUIDANCE.docx)
- Link: https://www.neco.navy.mil/synopsis_file/N6258311R0588_BAA_SUBMISSION_GUIDANCE.docx
- Note: If links are broken, refer to Point of Contact above or contact the FBO Help Desk at 877-472-3779.
- File Name: N6258311R0588_BAA_FY11_preStressed.docx (https://www.neco.navy.mil/synopsis_file/N6258311R0588_BAA_FY11_preStressed.docx)
- Record
- SN02492511-W 20110709/110707235647-5ea5e4594d91c36f5bef7d2260dd519a (fbodaily.com)
- Source
-
FedBizOpps Link to This Notice
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