Crack & Seat

The purpose of crack & seat of concrete pavement prior to overlaying it is to minimize the occurrence and severity of reflection cracks in the overlay caused by slab action by cracking the concrete slabs to reduce their effective length and then seating the cracked slabs to reestablish support between the subbase and the slabs. Some specifications require that the road be opened to traffic after cracking to accomplish the seating prior to paving the overlay. Other specifications require a proof roller be used to seat the cracked concrete. Most cracking has been performed with the T8600 Badger Breaker® although the MHB Badger Breaker® is also used for cracking.

Reports Crack & Seat

February 11, 2015

Breaking / Cracking and Seating Concrete Pavements

National Cooperative Highway Research Program Synthesis of Highway Practice 144 by Marshall R. Thompson.

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Norwalk Uses Crack & Seat to Rehabilitate Roadways

Description of how a city and its engineering firm are using crack & seat and asphalt overlay to rehabilitate failing concrete pavements.

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Rapid Pavement Rehabilitation with Long Life Asphalt Concrete

Project experience from the rehabilitation of Interstate 710 in Long Beach, California using 55-hour weekend closure and crack & seat with asphalt overlay.

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Reports Crack & Seat

June 21, 2016

Simplified Crack, Seat, and Overlay Design for Scottish Roads

Investigation of a simplified design approach for asphalt overlays on cracked and seated or rubblized cement bound material (CBM) in Scotland.

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Reports Crack & Seat Airports

June 21, 2016

The use of crack and seat treatment in refurbishment of airfield pavements

The overall purpose of the guide is to provide enough information to enable those engineers not familiar with crack and seat technology to be able to conduct effective maintenance of concrete pavements at airfields.

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