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P2P Update

P2P Update. January 17, 2007. P2P Update. Promote performance based specifications as the preferred alternative to prescriptive specifications through Partnering Industry Credibility Codes and Standards Technology Case Studies Education. Goal 1: Partnering – Progress.

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P2P Update

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  1. P2P Update January 17, 2007

  2. P2P Update • Promote performance based specifications as the preferred alternative to prescriptive specifications through • Partnering • Industry Credibility • Codes and Standards • Technology • Case Studies • Education

  3. Goal 1: Partnering – Progress • Advisory group of engineers and architects • Advisory group of contractors (ASCC) • 100+ presentations/seminars on P2P Initiative • ACI local chapters • State RMC Associations • State SEA and ASCE chapters • National Conventions (ACI, ASCE, NCSEA, AIA, CSI, AASHTO) • Guidance on concrete specifications • Communicate progress via newsletters, web site, and industry publications

  4. Goal 2: Credibility – Progress • Quality management system • Guidelines have been developed • Based on ISO 9000 concept • Producer certification program • Pre-qualify producers for performance-based projects • Based on quality management system • Under development • Concrete professional certification through ACI • Develop and approve performance mix designs • Guidelines and training program • Under development

  5. Goal 3: Codes and Standards – Progress • Model (guide) performance specification • Example performance-based specification developed • Developing model specification – ongoing Bickley, Hooton, Hover research project – May 2007 • ACI Strategic Development Council ATI #44 • Proposed ACI-ITG to develop guide specification • Code change proposals • ACI 318 Chapter 4 alternative to w/c ratio (RCPT) rejected for 2008 – will try again in 2011 • ACI 318 Chapter 4 exposure class concept approved for 2008 • ASTM C 94 performance/prescriptive option still under discussion

  6. Example Performance Specification • Uses a building example • Concrete with • No exposure • Freeze-thaw exposure • Sulfate exposure • Objective • Minimize prescriptive requirements • Meet current ACI 318 code requirements

  7. Preparation of a Performance-based Specification for Cast-in-Place Concrete • Conducted by Bickley, Hooton, and Hover • Phase I was completed in January 2006 • Comprehensive review of performance specs and tests from around the world • Phase II will include a standard spec in ACI 301 format • Scheduled for completion in May 2007

  8. Goal 4: Technology – Progress • Research project to develop durability test for qualification and acceptance • Alternative to w/c requirement in ACI 318 • Correlate index tests (RCPT, RMT, and Sorptivity) to science based tests such as diffusion measurements • Funded by NRMCA, RMC Research Foundation, PCA • Co-funded by FHWA pool-fund study to correlate laboratory measurements with field results • Estimated at $1.5 Million over 4 years

  9. Goal 5: Case Studies – Progress • Compared results of several tests on lab samples • Prescription vs performance specs for: • Slab on Grade • Bridge Deck • Structural Concrete (ACI 318) • In all cases performance criteria gave better results

  10. Goal 6: Education – Progress

  11. Introduction to P2P • Presentation • Brochure • Basic overview of the P2P Initiative • Encourages people to take the online seminar

  12. ASCE Seminar • Two-day seminar • Structures subject to extreme conditions • Freeze-thaw • Chemical attack • Corrosion • Provide design details • Develop performance-based specifications • Latest quality assurance methods

  13. P2P Articles • Approximately 20 articles published • Structure magazine • Concrete International • Structural Engineer • Other articles and downloads are available at www.nrmca.org/P2P

  14. 2007 Concrete Technology Forum • High Performance Concrete • May 22-24, 2007 • Fairmont Dallas Hotel • Topics include: • Self Consolidating Concrete • Ultra Fast Track Construction • Extended Service Life • Industrial Concrete Floors • Applications and Case Studies • Performance Specifications and Testing

  15. Questions?

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