Up, up and away!

Words: Jeff SpeckPump lightweight concrete 54 stories, straight-up, successfully!

Well, that's exactly what Ozinga Chicago, the concrete provider for a 54-story project on Lake Street in Chicago, did. The company used Riverlite® expanded clay lightweight aggregate from Trinity Lightweight and they were pleased. According to Scott Kelly, Ozinga's Assistant Manager of Quality Control, "Everything has gone pretty smoothly and according to specification."

The lightweight concrete used in this project was a Self-Consolidating Concrete (SCC) using a high-range water-reducing admixture and three other chemical admixtures as well as Class C fly ash. Additionally, steel fiber was added at a rate of 35 pounds per cubic yard. The mix design provided concrete that was fluid enough at the pump discharge to spread without vibration.

Have a look at how this Chicago project went together and see how Trinity Lightweight and Ozinga Chicago worked together to make it a success. When you need to pump structural lightweight concrete to great heights to meet strength and fire resistance requirements, I hope you will think of Trinity Lightweight.
About: Featured
 0
Masonry Mortar: The Right Type for the Job
May 2025

When it comes to masonry construction, mortar is much more than “glue” that holds everything together — it’s a critical component of wall performance, longevity, and aesthetics. It can “make it or break it”. Whether you’re laying a foundation CMU wall or

Garen Graves
Featured MAP Partner
Mortar
Read More
MASONRY STRONG Podcast, Episode 20 Recap: Mark Kemp, Superior Masonry
May 2025

Justin Stengel
Read More
How It’s Made: Clay Thin Brick
May 2025

Clay thin brick is a versatile alternative to traditional full brick. It comes in numerous colors and styles and offers something for every design preference. Thanks to the lighter weight, it is designed to reach spaces full brick cannot. From floors to c

Allison Goley
Featured MAP Partner
Read More
Bonding with Masonry 2025: Q1
May 2025

This issue’s questions come from an Architect and a Mason Contractor. What questions do you have? Send them to info@masonrymagazine.com, attention Technical Talk. Q. An Architect asks how to create a narrow masonry pier between openings. Is there a min

David Biggs
Featured
Read More