Thin Bonded Overlays in California & Nevada

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Thin Bonded Concrete Overlays (TBCO) can be designed using a pavement design program like the American Concrete Pavement Associations StreetPave or the UTW tables found in “Whitetopping State of the Practice” ( ACPA EB21 OP). Many of the projects discussed in the following section were designed and constructed with longer joint spacings prior to the publication of State of the Practice but are performing acceptably. If it is desired to exceed the standard joint spacing, careful consideration should be given to the thickness and quality of the asphalt base and volume and weight of the traffic. Also, TBCO can only be used on asphalt pavement that needs a new surface treatment; it will not correct for asphalt pavement that is suffering from subgrade failure.

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