Author: J. E. SimonsenPublisher:
ISBN:
Category : Asphalt concrete
Languages : en
Pages : 28
Book Description
Performance Evaluation of Concrete Pavement Overlays
Author: J. E. SimonsenPublisher:
ISBN:
Category : Asphalt concrete
Languages : en
Pages : 28
Book Description
Performance Evaluation of Concrete Overlays
Author: David L. LippertPublisher:
ISBN:
Category : Pavements
Languages : en
Pages : 54
Book Description
Performance Evaluation of Concrete Pavement Overlays (construction Report)
Author: J. E. SimonsenPublisher:
ISBN:
Category : Pavements
Languages : en
Pages : 15
Book Description
Performance Evaluation of Asphaltic Concrete Pavement Overlays
Author: Ashwani K. SharmaPublisher:
ISBN:
Category : Concrete coatings
Languages : en
Pages : 0
Book Description
Structural Overlay Strategies for Jointed Concrete Pavements
Author: Bituminous Overlay Policy - a Performance Evaluation
Author: Amy M. SchutzbachPublisher:
ISBN:
Category : Pavements
Languages : en
Pages : 54
Book Description
To address an increasing backlog of roadways in need of rehabilitation, the Illinois Department of Transportation (IDOT) began use of a standard overlay thickness policy in the early 1980's. On the non-interstate, or primary, system, first resurfacing or overlays over pavements being widened and resurfaced were allowed 2.5 inches. Subsequent resurfacing were limited to 2 inches. A provision in the policy allowed for exceptions. This report presents the results of an evaluation of the performance of bituminous overlays constructed on the primary system in accordance with IDOT'S overlay policy. Twelve projects were selected for monitoring. The results of visual surveys, deflection testing, and Condition Rating Survey (CRS) histories were analyzed. The standard overlay thickness policy met the FHWA required minimum 5-year performance period for Federal-aid rehabilitation projects on the primary system. Subsequent overlays were found to have shorter life spans than first overlays. Records of requests for exceptions to the standard overlay thickness policy were also reviewed. Information gathered from the records review was incorporated into the policy and used to create a more efficient process for reviewing requests for exceptions.
Империалистиčеская борьба за Африку и освободительное движение народов
Author: В. Я ВасильеваEvaluation of a Thin-bonded Portland Cement Concrete Pavement Overlay
Author: Thomas Elliott FreemanPublisher:
ISBN:
Category : Pavements
Languages : en
Pages : 16
Book Description
This report discusses the performance of the Virginia Department of Transportation's first modern rehabilitation project involving a thin-bonded portland cement concrete overlay of an existing jointed concrete pavement. The performance of the rigid overlay, which was constructed in a fast-track mode to minimize lane closure time, was evaluated by detailed condition surveys conducted annually throughout a 6-year analysis period to identify, document, and monitor the occurrence of distress. The roughness of the overlay was also measured annually with an accelerometer-based inertial road profiler to permit an examination of the effects of surface deterioration on ride quality. After 6 full years of service, which included only minimal maintenance, the pavement overlay remained in good overall condition. Although the ride quality of the overlay remained virtually unchanged throughout the period, a significant increase in the occurrence of low-to-moderate-severity joint spalls, corner breaks, and to a lesser extent transverse cracks was noted during the fifth and sixth years. The extrusion of compression seals and the subsequent infiltration of water into the pavement structure probably contributed to the observed localized failure of the overlay/substrate bond in the vicinity of joints. This condition, in turn, weakened the pavement's structural capacity at panel edges and thereby resulted in the formation of corner breaks and cracks parallel with and near transverse joints. The consideration of thin-bonded concrete overlays constructed in a fast-track mode is recommended as a viable rehabilitation alternative for jointed concrete pavements that are not severely distressed. However, careful attention to joint installation and, in particular, joint maintenance is recommended for similar future rehabilitation projects.
National Experimental Projects Tabulation
Author: Evaluation of Unbonded Portland Cement Concrete Overlays
Author: Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 92
Book Description