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Concrete Pavement Overlays over Existing Asphalt Pavement Structures, Project Summary.
| 题名： | Concrete Pavement Overlays over Existing Asphalt Pavement Structures, Project Summary. |
| 关键词： | overlay；structure；exist；project；istin；sting；rete；ncre；halt；summa |
| 摘要： | Whitetopping is a pavement system of portland cement concrete (PCC) placed on hot mix asphalt concrete (HMAC) pavement. Whitetopping is used to address distresses in asphalt pavement such as rutting and shoving. Three types of whitetopping pavements are commonly used. They are: (1) ultra-thin whitetopping (UTW): slab thickness between two to less than four inches, (2) thin whitetopping (TWT): slab thickness of four to less than eight inches, and (3) conventional white topping: slab thickness of eight inches or more.Many state agencies, including the Texas Department of Transportation (TxDOT), have used whitetopping overlays and reported positive results. TxDOT developed design standards and special specifi cations for thin whitetopping. Currently, however, the agency does not have guidelines or design procedures for the rehabilitation of HMAC pavement with whitetopping. Proper design procedures and guidelines for the use of whitetopping will improve the effi ciency of TxDOTs operations in rehabilitation of deteriorated HMAC pavements. |
| 报告类型： | 科技报告 |
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