Description

Black and white photograph of the construction of an airport terminal at JFK International Airport (then known as Idlewild Airport) designed by Eero Saarinen. Work crews set forms for poured concrete.

Original Caption: "Timing the removal of counterforms to allow finishing to the final architectural contrours was critical. The key to that problem was precise set control of the concrete. Mix for the job was designed with 6-1/2 sacks and Pozzolith. We used 5" slump under the counterforms and 3" slump outside. Pozzolith provided remarkable set control...the precise set wanted, anywhere in the range of one-to-four hours. The concrete finished easily with good texture, no plastic cracking and low shrinkage. And it tested at over 5000 psi."

Not used in Technology Review, filed July 27 1961.