The Slag Cement Association moderated a session at the recent American Concrete Institute (ACI) Fall Convention. The digital event included presentations from Professor Jason Weiss (Oregon State University) and Shawn Kalyn (St. Marys Cement). Thank you to ACI for the opportunity to highlight the valuable benefits of Slag Cement in Concrete. The slides from both presentations have been made available below.
The Influence of Slag on Reducing Concrete Pavement Joint Deterioration
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Speakers: Jason Weiss, Oregon State University
Distress has recently been observed in the joints of some concrete pavements, primarily in the wet-freeze states. This distress often begins in longitudinal joints, followed by transverse joints and results in the significant loss of material from the joint area. Although it may only affect approximately 10% of the concrete pavements system-wide, it greatly reduces the service life and increases maintenance costs of the pavements it effects. Primary issues that emerged from studies on this phenomenon include the importance of the timing of joint sawing, the width of the joint opening, degree of concrete or joint sealing, drainage and degree of saturation of the concrete at the joint, quality of the air void system, role of deicing chemicals, quality of curing, and the degree of restraint at the joint. This work will discuss the role of slag and its role in the reduction or mitigation of joint damage.
Demonstrating Resilient and Sustainable Concrete Benefits with Slag Cement
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Speaker: Shawn Kalyn, Technical Services Engineer, St. Marys Cement
This presentation will discuss how slag cement and other supplementary cementitious materials (SCMs) can help reduce the carbon impact of concrete products and show attendees how to use industry wide documents and tools. Topics covered include:
- Key terms and definitions commonly used when discussing the carbon impact of concrete;
- How initiatives like the LEED point system, Architecture 2030, and the Carbon Leadership Forum are influencing the use of concrete materials;
- How to reduce the carbon impact of concrete using SCMs like slag cement; and
- How to use product specific information on slag cement including EPDs and LCA Calculator tools to show customers sustainable and durable options for concrete.
Alternatively, a pre-recorded webinar version of this presentation can be found here:
**As with all concrete mixtures, trial batches should be performed to verify concrete properties. Results may vary due to a variety of circumstances, including temperature and mixture components, among other things. You should consult your slag cement professional for assistance. Nothing contained herein shall be considered or construed as a warranty or guarantee, either expressed or implied, including any warranty of fitness for a particular purpose.**
Professor Burkan Isgor, Oregon State University
0.Burkan Isgor is the John and Jean Loosley Faculty Fellow and Professor of Civil Engineering and Materials Science at Oregon State University, Corvallis, Oregon. Dr. Isgor received his engineering degree from Bogazici University (formerly Robert College) in 1995 and completed his masters and doctoral studies at Carleton University in 1997 and 2001, respectively. After working as a finite element software developer of engineering applications at Winsoft Software Inc., he became a faculty member in the Department of Civil and Environmental Engineering at Carleton University in 2003. He has been teaching and conducting research at Oregon State University since 2012.
A Professional Engineer in the Province of Ontario, Dr. Isgor served as the Vice President of the Canadian Society for Civil Engineering (CSCE) between 2009 and 2011 and was in charge of the technical divisions of the Society. He is currently active in a number of professional societies including American Concrete Institute (ACI), National Association of Corrosion Engineers (NACE), Electrochemical Society (ECS), and RILEM.
Dr. Isgor is the chair of the ACI Committee on Corrosion of Metals (ACI 222), an associate editor for the ASCE Materials Journal, and an editorial board member of the Journal of Cement and Concrete Composites, and RILEM Materials and Structures Journal.
Shawn Kalyn, Technical Services Engineer, St. Marys Cement
B.Eng, LEED AP bd+c
Kalyn has been with St. Marys Cement for more than 15 years. He received his degree in civil engineering from Ryerson University in Toronto, ON, Canada. His responsibilities include providing concrete solutions to the cement customers and promotion of concrete and cementitious products. Kalyn is involved with the PCA Sustainability committee, ICPI Technical and Education Committees, SCA Great Lakes and Marketing Technical Committees and is involved in the MIT sustainability hub.
Professor Jason Weiss, Oregon State University
Jason Weiss is the Edwards Distinguished Chair in Engineering and the Director of the Kiewit Center for Infrastructure and Transportation Research. Before joining Oregon State as the Head of the School of Civil and Construction Engineering he was a faculty member at Purdue University for over 16 years where he held the position of the Jack and Kay Hockema Professor of Civil Engineering and Director of the Pankow Materials Laboratory. He earned a B.A.E. from the Pennsylvania State University and a MS and PhD from Northwestern University in 1997 and 1999 respectively. He is actively involved in research on cement and concrete materials specifically focused on early age property development, cracking, transport in concrete, and concrete durability. Specifically, he is known for research his group has performed in the areas of shrinkage and cracking reduction, the use of the ring and dual ring test, use of electrical resistivity and the formation factor, use of internally cured concrete, and concrete pavement durability.