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P2P Update January 17, 2007. P2P Update  Promote performance based specifications as the preferred alternative to prescriptive specifications through.

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Presentation on theme: "P2P Update January 17, 2007. P2P Update  Promote performance based specifications as the preferred alternative to prescriptive specifications through."— Presentation transcript:

1 P2P Update January 17, 2007

2 P2P Update  Promote performance based specifications as the preferred alternative to prescriptive specifications through 1.Partnering 2.Industry Credibility 3.Codes and Standards 4.Technology 5.Case Studies 6.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

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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