On Saturday, our efforts were rewarded when 45 cubic yards of concrete were placed for three large-scale concrete specimens. PhD student Stephanie Wood and recently-hired undergraduate assistant Aaron Miller traveled with Eric to Knoxville to assist on pour day. It was a long, hot day, with temperatures well over 90 degrees. As part of the thermal control plan, nearly 10,000 lbs of mixing water was replaced with ice, which enabled us to keep the fresh concrete temperatures under 70 degrees. Along with the formwork insulation, this will reduce the risks of thermal cracking and delayed ettringite formation (DEF).
In addition to Stephanie and Aaron, MS student Nathan Klenke, and BS students Matt Chandler and Ashley Sutton have been instrumental in UA's efforts on this project.
We are grateful for the chance to make some new friends in concrete and look forward to building lasting relationships with UT and ORNL.
More photos can be found on UT's CEE departmental Twitter page: