Sessions & Events

 

Please note: All sessions and events take place in Central Daylight Time: CDT (UTC-5).

H=Hyatt Regency Dallas; U=Union Station

Hot Topic Session - When Carbon Reduction and Constructability Clash: Who is Responsible for the Fallout?

Sunday, October 23, 2022  8:00 PM - 10:00 PM, H-Reunion A

Panelist representing the major segments of our industry, the licensed design professional, concrete contractor, and concrete producer, will present and discuss examples of constructability challenges, successes, and issues of responsibilities when building with "lower carbon" concrete.
Learning Objectives:
(1) Describe the constructability issues that present challenges to the individual project team members;
(2) Explain how project team members can work collectively to avoid constructability issues when building with low carbon concrete;
(3) Define responsibilities of project team members to help avoid constructability issues of low carbon concrete;
(4) Describe suggested approaches that have resulted in reducing constructability challenges on low carbon concrete construction projects.

This session has been AIA/ICC approved for 2 CEU/PDH credits.


Experiences with High SCM (low carbon) Concrete Mix Designs

Presented By: Kevin A Macdonald
Affiliation: Beton Consulting Engineers LLC
Description: This presentation will discuss experiences with high SCM (low carbon) concrete mix designs and a discussion of items for consideration for all project team members when these mixes are specified and used.


Challenges from Perspective "Low Carbon" Specifications

Presented By: Rory McCoy
Affiliation: Centre Concrete
Description: This presentation will review and provide examples of challenges faced by a concrete producer from perspective "low carbon" specifications, and contrasting projects where these issues have been avoided, while still providing significant carbon reduction to the project.


Reducing the Embodied Carbon of Concrete

Presented By: Alec Zimmer
Affiliation: Simpson Gumpertz & Heger Inc.
Description: When trying to reduce the embodied carbon of concrete, designers have a number of options. But these options come with severe challenges: - We can specify partial replacement of the portland cement with interground limestone or supplementary cementitious materials, but SCMs may not be available or may require a long (carbon-adding) journey to reach the batch plant. - We can specify carbon sequestration techniques, but those techniques are not available yet in all regions. - We can aspire to better particle packing of the aggregates, but the local producers may not be able to achieve the blend of aggregate sizes to make this a reality. - We can specify a longer period of time to achieve the specified strength and reduce the cement content, but: > Doing so is often at odds with aggressive construction schedules. > Due to the fact that testing quality is variable, suppliers often "over cement" concrete mixes to guard against low-strength test reports. - Most fundamentally, the design-and-construction community operates in an environment that, due to perceived risk and fee pressure, effectively discourages the additional thought and vetting that comes with innovation.


A Concrete Contractor's Perspective on Lower Carbon Concrete and Constructability

Presented By: Robert Nussmeier
Affiliation: Baker Concrete Construction
Description: This presentation will be from the concrete contractor's perspective on lower carbon concrete and constructability, a discussion of what has worked on projects and what challenges have been encountered.


A Concrete Contractor's Perspective on Lower Carbon Concrete and Constructability

Presented By: Rick Stone
Affiliation:
Description: This presentation will be from the concrete contractor's perspective on lower carbon concrete and constructability, a discussion of what has worked on projects and what challenges have been encountered.

Upper Level Sponsors

Ash Grove
Baker
Conseal
Controls Group
Euclid Chemical
GCP
Master Builders
PoreShield
PS=0
ACI Northeast Texas Chapter

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