X47, Delaware County, IA, Crack & Seat with T8600

Crack & seat has been widely used since the early 1980’s to reduce the extent and severity of reflective cracking in asphalt overlays placed on concrete pavements. This video from 1994 shows the crack & seat process performed by Antigo Construction on Iowa county road X47 in Delaware County. 20 years later crack & seat is still performed the same way. A guillotine-style Badger Breaker® drops its hammer approximately every 24 inches to induce hairline cracks through the depth of the concrete slab while maintaining good aggregate interlock between the cracked segments. A heavy pneumatic tired roller is used to firmly seat the cracked concrete segments on the base ensuring there are no voids under the slabs.

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