How about a (second) lift?

The top lift of the Kansas test pavement is about 1.5 inches thick, laid over the 11¾-inch bottom lift. Photo: Koss Construction Co.

A concrete spreader places the top lift over the still wet, low-slump bottom lift on a section of test pavement along Interstate 70 west of Abilene, Kan. Photo: Koss Construction Co.

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