PCI Ultra-High-Performance Concrete Workshop

This one-day workshop will gather experts from across the precast concrete industry to discuss various research and development initiatives for the implementation of ultra-high-performance concrete (UHPC) in precast concrete components.

The event will cover design considerations for architectural and structural precast UHPC components, such as UHPC material selection for nonproprietary mixture designs, characterization and quality control testing of UHPC, and production and fabrication of precast UHPC components. Includes continental breakfast and lunch. Register for the UHPC workshop through the PCI Committee Days event site.

Cost: $180 per person

Anticipated workshop schedule:

 

Materials and Production Track

Design and Engineering Track

8:00-8:15

Welcome Session

8:15-9:45

PCI-UHPC Research Project Overview

9:45-10:00

Break

10:00-12:00

Non-Proprietary UHPC Mix Design 

UHPC Design Considerations

12:00-1:15

Workshop Luncheon with Presentation

1:15-2:45

Mixture Characterization & Quality Control

Structural Design Recommendations

2:45-3:00

Break

3:00-4:30

UHPC Applications in Structural & Architectural Precast Concrete

4:30-5:00

Closing Remarks and Next Steps for PCI

PCI expects the workshop to provide essential educational information as the precast industry advances the use of UHPC in precast components for commercial, transportation, and architectural applications.

8:00-8:15 Welcome Session – Cassatt CD
Speaker: Greg Force, Chair, PCI Research and Development Council

8:15-9:45 Plenary Session: PCI-UHPC Research Project Overview – Cassatt CD
Synopsis: Objectives and strategies to achieve rapid implementation of UHPC for long-span precast prestressed concrete building and bridge members in the US. Criteria for properties and testing of the class of material called “PCI-UHPC.” Lab trials, plant trials, and development of materials guide. Review of international literature and development of tentative recommendations for design of flexure, shear, interface shear, and other actions. Development of optimized bridge and building floor systems. Test results. Final recommendations. Design examples. Structures Design Guide.
Speaker: Maher K. Tadros, Principal, e.construct.USA, LLC and Principal Investigator

9:45-10:00 Break

10:00-12:00 Materials and Production Track: Non-Proprietary UHPC Mix Design – Cassatt AB
Title: PCI UHPC Mixture Development, Materials Guidelines, and Guide Specification
Synopsis: A key goal of the PCI UHPC research project was to promote implementation of UHPC by providing tools to address the materials challenges that have prevented more widespread use, including the high cost of proprietary UHPC materials, the need for production expertise and experience, and the varied and sometimes inconsistent requirements for UHPC materials performance. The tools that were prepared as part of this research effort consist of: 1) guidelines for developing and producing cost-effective, non-proprietary UHPC mixtures and 2) a guide specification for UHPC materials qualification and acceptance. These documents were refined and their applicability verified through the completion of a program that included the development and/or characterization of UHPC mixtures based on materials local to six different precasters and the ¸production of component specimens used for the structural testing conducted as part of this project. This presentation will describe the materials research effort, and discuss lessons learned and best practices for implementing UHPC in precast production facilities
Speaker: John S. Lawler, Principal, Wiss, Janney, Elstner Associates, and Co-Principal Investigator

Title: PCI Producer Experience Panel Discussion
Synopsis: Following the presentation, several precast producer members that participated in the research project will discuss their lessons learned regarding the production of UHPC for precast components.
Speakers: Kurt Podoll, Division Manager, Standard Concrete Products; Taylor Nunamaker, Engineer, Tindall Corporation; Ron Sylvester, Quality Assurance Supervisor, Coreslab Omaha, Todd Culp, Vice President/General Manager, Coreslab Omaha
Moderator: John S. Lawler, Principal, Wiss, Janney, Elstner Associates

10:00-12:00 Design and Engineering Track: UHPC Design Considerations – Avedon AB
Title: Fire Resistance of Ultra-High-Performance Concrete Beams and Girders
Synopsis: The presentation will focus on the application of advanced analysis approach for evaluating fire resistance of typical UHPC precast beams and girders, used in building and bridge applications. The development of a non-liner finite-element based numerical model for tracing the response of a UHPC girder (or beam) under the combined effects of structural loading and transient fire exposure will be presented. The techniques to be adopted for incorporating the full effects of transient fire exposure, temperature dependent properties of UHPC and reinforcing steel, fire induced spalling, and different failure limit states, in fire resistance analysis will be outlined. The evolution of temperature-induced instability, leading to failure of an UHPC beams and girders will be discussed. Results from a set of case studies will be utilized to illustrate the critical factors governing the fire resistance of UHPC girders and beams.
Speakers: Venkatesh Kodur, University Distinguished Professor, Michigan State University, and Augusto Gil, Ph.D. Student, Michigan State University

Title: Structural Behavior of Axial and Seismic UHPC Columns
Synopsis: This presentation provides an overview of experimental testing of a total of 13 large-scale full UHPC columns that were tested under different loading conditions to comprehensively investigate the effect of different variables on the structural behavior and strength of UHPC columns. This experimental investigation aimed at providing the knowledge needed to optimize the design of UHPC columns under different types of loading. It also aimed at contributing to the design codes and guidelines by conducting re-evaluation of the existing provisions in estimating the columns axial strength (i.e., short and long columns) and by providing recommendations for the design of the UHPC columns. The tests included four reduced-scale UHPC columns that were tested at UNR under combined axial and cyclic lateral loading, and nine full-scale slender UHPC columns that were tested at a 4-million ln machine at UC Berkeley under pure axial loading
Speaker: Mohamed A. Moustafa, Ph.D., P.E., Associate Professor, University of Nevada, Reno

Title: Industry Guidance on Utilizing UHPC in Structural Components
Synopsis: This presentation will highlight industry guidance on structural design from organizations including the American Concrete Institute, Federal Highway Administration, Canadian Standards Association, and Swiss Society of Engineers and Architects.
Speaker: JP Binard, PE, Precast Systems Engineering

12:00-1:15 Workshop Luncheon – Cassatt CD
Video Presentation by Dr. Jackie Voo, Executive Director & CEO, Dura Technology, Malaysia

1:15-2:45 Materials and Production Track: Mixture Characterization and Quality Control – Cassatt AB
Title: Evaluation of Test Methods to Characterize Tensile Strength Of UHPC
Synopsis: Several testing methods exist in the literature to evaluate the tensile strength of fiberreinforced concrete, but there is still a lack of agreement on which method is most suitable for UHPC. This presentation presents the experimental study results comparing three different test methods to estimate and evaluate the tensile response of UHPC. A standard commercial UHPC mix was used in this study.
Speaker: Sriram Aaleti, PhD, Associate Professor, The University of Alabama

Title: UHPC Tensile Strength Testing Options
Synopsis: Unlike conventional concrete, UHPC allows designers to take advantage of high tensile strength and ductility in structural designs. There are several different tensile strength test methods available to measure UHPC tensile strength with varying levels of complexity. This presentation will describe the direct tension test method, ASTM C1609 flexural test, and a simplified double punch test, present the correlation between test methods, and give recommendations on when each test method might be appropriate to use.
Speaker: Kyle A. Riding, Ph.D., P.E., Professor, University of Florida

Title: Mechanical characterization and strength maturity assessment of ABC-UTC non-proprietary UHPC
Synopsis: Recently, a new non-proprietary UHPC mix for ABC connections has been developed through collective effort among the ABC-UTC consortium, and has been reproduced using local NV and CA materials as presented in this study. Non-sieved sand is used to make the mix more practical and easy to reproduce at different parts of the nation. This presentation provides mechanical characterization of the ABC-UTC non-proprietary mix using different materials from Midwest as well as western US along with sieved and non-sieved sand with 1% and 2% steel fibers. Moreover, using the same non-proprietary UHPC mix, concrete maturity sensors from different vendors have been used to assess the validity of the well-established ASTM strength maturity method for UHPC
Speaker: Mohamed A. Moustafa, Ph.D., P.E., Associate Professor, University of Nevada, Reno

1:15-2:45 Design and Engineering Track: Structural Design Recommendations – Avedon AB
Title: Summary of Design Recommendations
Synopsis: A list of the revisions needed to standard design practice with conventional concrete. Flexure at service. Flexure at strength. Shear at service. Shear at strength. Interface shear. End zone. Camber, deflection, and prestress loss. Design steps. Available design resources.
Speaker: Maher K. Tadros, Principal, e.construct.USA, LLC

Title: Bridge Design Example
Synopsis: This presentation gives the details of a fully worked out example. It is a decked I-beam system for a bridge span of 250 feet. The method of design, the tools used in design, and the details will be presented. Aspects of the bridge superstructure design will include flexure, shear, camber, prestress losses, and stability analysis for handling, hauling, and erection.
Speaker: David Gee, Structural Engineer, e.construct.USA, LLC

Title: Building Design Example
Synopsis: This presentation gives the details of a fully worked out example of a voided box beam for office live load in a multistory building. The span is 72 feet and the spacing is 24 feet. It supports standard 8 in. hollow core planks and 3 in. concrete topping. Design for flexure, shear, torsion, and end zone will be shown. The beam will have considerable web openings for passage of utilities. Consideration of fire protection is given.
Speaker: Mostafa Abo El-Khier, Structural Engineer, e.construct.USA, LLC

2:45-3:00 Break

3:00-4:30 Closing Session: UHPC Applications in Structural & Architectural Precast Concrete – Cassatt CD
Title: UHPC H-Piles: An Alternative to Steel Piles for Deep Foundations
Synopsis: Taking advantage of excellent UHPC mechanical and durability properties, H-shaped UHPC piles were realized as an alternative to steel H-piles. This presentation will present research results from past and current ongoing efforts on developing UHPC pile foundations and their implementation
Speaker: Sriram Aaleti, PhD, Associate Professor, The University of Alabama

Title: Utilizing UHPC Effectively
Synopsis: This presentation will highlight cost effective uses of UHPC which you can incorporate in your projects today.
Speaker: JP Binard, PE, Precast Systems Engineering

Title: Architectural UHPC
Synopsis: Architectural Precast is one of the fastest growing segments in Ultra High-Performance Concrete (UHPC) construction. Cutting edge design tools now available to the architectural and engineering communities are driving the need for thinner, more complex, and higher performing concrete materials. UHPC’s proven performance in the areas of strength, durability, versatility of design, and long service life are driving its use in building construction. This presentation discusses the ins and outs of producing precast UHPC elements and the types of anchoring systems required to produce Ultra High-Performance Concrete building enclosures. It describes applications currently being produced and highlights emerging trends for this dynamic material.
Speaker: Larry Rowland, Precast Manager, ceEntek 4:30-5:00 Closing Remarks and Next Steps for PCI – Cassatt CD Speaker: Greg Force, PCI Research and Development Council Chair

5:00-6:00 UHPC Reception – Avedon CD
When
9/21/2021 8:00 AM - 4:30 PM
Where
Loew's Chicago Hotel, 5300 N. River Rd., Rosemont, IL 60018 United States
 

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