Rebuilding New York City’s World Trade Center

Portland cement-based mix quickly delivers durable polished concrete floor.
Posted on 04/22/2024

Project image

Completed in 2018, 3 World Trade Center is one of five high-rise office buildings comprising the new World Trade Center complex in lower Manhattan, New York City. Also known as 175 Greenwich St., the 80-story building is located on the east side of Greenwich Street. Management consultant firm McKinsey & Co. is a tenant, occupying 186,000 square feet on four floors.

New Jersey-based Surface Solutions was hired to install a polished concrete floor in the consulting firm’s elevator lobbies. Pleased with the results after using Rapid Set® products on previous projects, the contractor used CTS 24/6 Concrete Mix from CTS Cement Manufacturing Corp. for the project.

A blend of portland cement, high-performance additives, and quality aggregates, CTS 24/6 Concrete Mix is ready for foot traffic in eight to 10 hours and reaches structural strength in 24 hours without additives, admixtures, or accelerators. Crews need only add water.

In this case, the engineer required that fibers be added to the mix. Surface Solutions’ crew mixed the material in an Imer Group Mortarman 120 mixer, finished the concrete with a steel trowel, and then polished the surface.

Surface Solutions’ crew brought the slab up to match the elevation of the floor on both sides of the elevator bank with CTS 24/6 Concrete Mix and then polished the material.
Project at a glance
  • Type: Commercial Lobby
  • Application: Flooring
  • Location: New York City
  • Size: 2,500 sq. ft.
  • Product: CTS 24/6 Concrete Mix (1,100 bags)
  • Dates: Jan. 28 – Feb. 15, 2019
  • Owner: McKinsey & Co.
  • Contractor: Surface Solutions
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