Central Park Tower
- Oct 20, 2022
- 1 min read
Updated: May 24, 2024
New York, NY
Award: Innovative Applications
Project Team
Owner: Extrell Development Company
Contractor: GC-Lendlease/ Concrete - Pinnacle Industries
Architect: Adrian Smith + Gordon Gill Architecture
Engineer: WSP Global
Concrete: Empire Transit Mix
Slag Cement: Lehigh Hanson
Case Study
In this project a total of 100,000 cubic yards of concrete was used. Slag cement enhanced the project by:
High PSI (16k psi)
Sustainability (40% slag cement mix offered a significant co2 reduction)
Pumpability
Low heat of hydration for mass pours (70% slag) which were 12 feet thick.
The use of slag cement resulted in structural, sustainable and mass concrete attributes.
This tower is a super- tall skyscraper known as one of a handful of “Pencil-Towers” in the world. It is the tallest primarily residential building in the world, tallest building in the western hemisphere, and the tallest roof in the western hemisphere. This project has a 28 foot cantilevered section that starts at 300 feet above ground, over an adjacent building, and reaches up 1,200 feet above.
Application Type
% Slag Cement Replacement | 30 to 70% depending on application |
70 to 30% depending on application | |
% Portland Limestone Cement | None |
% Other SCM (if applicable) | 2 to 4% silica fume depending on application |
Aggregate | #67 and fine agg |
Water/cement ratio | .28 to .38 |
28-day Strengths | 9,000 to 14,000 psi depending on mix |
56-day Strengths | 12,000 to 18,000 psi depending on mix |
It’s amazing to see how Central Park Tower achieved such incredible structural and sustainable feats with innovative use of slag cement, reaching record heights and impressive engineering milestones. Speaking of precision and skill, I’ve also been enjoying Slope Rider which is a fast-paced game where you guide a rider down tricky slopes while testing your reflexes and timing.
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