Sun, March 29, 2020 2:30 PM - 3:30 PM, Vienna
The need to further densify our cities has caused a continuous growth in the high-rise building market. This market demands not only high-strength concrete but also high modulus of elasticity, because deformations control many aspects of the structural behavior. This session will present several designers, constructors, and quality control experts sharing their perspective and experience on the challenges and current solutions in specifying, obtaining, and measuring modulus of elasticity of high-strength concrete.
(1) Recognize the challenges faced in specifying high strength high modulus of elasticity concrete;
(2) Recognize the influence of the constituents and mixture design in obtaining a high modulus of elasticity concrete;
(3) Identify the challenges in quality control of Modulus of Elasticity and adequate ways to measure it;
(4) Review and learn from the experience of actual projects developed using high modulus of elasticity concrete.
This session has been AIA/ICC approved for 1 CEU/PDH credit.
Challenges in Projects Requiring Modulus of Elasticity above 7,000,000 psi
Presented By: Leonard Burkart
Affiliation: Prairie Material
Description: The Chicago high rise market continues to demand high strength concrete with increased constructability. However, recent developments have placed modulus of elasticity requirements at the front of contractor and designer demands. With numerous projects requiring high strength, modulus of elasticity, and increased efficiency requirements, Prairie Material has successfully completed numerous high-rise projects in the Chicago market. This presentation will focus on past experiences from a concrete producer perspective including development, production, and testing of high strength concrete. The presentation will also review upcoming projects with a focus on specification requirements.
High Rise Building Requiring High Strength High Modulus of Elasticity Concrete
Presented By: John Peronto
Affiliation: Thornton Tomasetti
Description: The challenges on specifying high strength high modulus of elasticity in projects dealing with the highest rise building worldwide will be analyzed by senior principal at Thornton Tomasetti. Main lessons learned will be shared.
Considerations When Testing MOE As Part of Daily Project Testing
Presented By: Walter Flood IV
Affiliation: Flood Testing Laboratories Inc.
Description: Modulus of Elasticity is being specified in lieu of compressive strength on an increasing number of projects. This presentation will highlight lessons learned following 6 such completed projects as well as the apparent variability that can be expected from batch and testing variations.