Status of Thin-bonded Concrete Overlays PDF Download
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Author: Robert H. Gausman
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 48
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Book Description
The Demonstration Projects Division of the Federal Highway Administration has been involved in the evaluation of a number of thin-bonded overlays since 1979. This report presents the status of those projects and includes a summary of some of the more important findings to date.
Author: Robert H. Gausman
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 48
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Book Description
The Demonstration Projects Division of the Federal Highway Administration has been involved in the evaluation of a number of thin-bonded overlays since 1979. This report presents the status of those projects and includes a summary of some of the more important findings to date.
Author: Manuel Treviño
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 230
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Book Description
Author: Tessa H. Volle
Publisher:
ISBN:
Category : Concrete coatings
Languages : en
Pages : 82
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Book Description
Author: Shiraz D. Tayabji
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 124
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Book Description
Field load testing was conducted by CTL at five sites in Iowa during April 1986. This report presents the results of field testing, analysis of results, and recommendations to incorporate study results in Iowa's design procedure for bonded concrete overlays.
Author: James Ray Lundy
Publisher:
ISBN:
Category : Laminated materials
Languages : en
Pages : 100
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Book Description
A procedure is developed by which the likelihood of delamination of bonded concrete overlays on continuously reinforced concrete pavements is reduced. The procedure compares the early age interface stress to the expected interface bond strength for a variety of environmental conditions. When the calculated stress exceeds the expected strength, it is recommended that overlay placement be curtailed until the possibility of debonding is reduced. A finite element method program is used to determine the early age stresses resulting from temperature and shrinkage induced volume changes. Stresses were determined for a variety of environmental and material combinations and overlay thicknesses. Analyses show that a significant reduction in stress results from the use of overlay materials which have a lower modulus and thermal coefficient than those of the existing slab. The stresses for a given combination of materials and environmental conditions are compared to the interface bond strength at early ages. Early age interface shear and tensile strengths are estimated from 7-day strength test results. The estimated strength, together with the variability of the interface strength, are used to calculate the likelihood of delamination for a given type of overlay and time of placement. This likelihood can be reduced through the selection of a different overlay material or time of placement.
Author:
Publisher:
ISBN:
Category : Pavements, Concrete
Languages : en
Pages : 58
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Book Description
Author: Benoît Bissonnette
Publisher: Springer Science & Business Media
ISBN: 9400712391
Category : Technology & Engineering
Languages : en
Pages : 197
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Book Description
Among different approaches that can be considered for concrete rehabilitation, bonded overlays are often the most economical alternative. The primary purpose of overlays is to extend the life of the candidate structures, either by restoring the quality and integrity of the surface and/or the re-establishing or improving the load-carrying capacity. Nevertheless, the durability of bonded overlay systems still draws concerns in the technical community because of bond sustainability problems encountered in a number of cases. At this time, there is still no accepted design approach or methodology that can warrant the practitioner a successful outcome of the repair. This State-of-Art report summarizes the findings with respect to all aspects involved in the overlaying process.
Author: American Concrete Pavement Association
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 15
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Book Description
Author: Michael I. Darter
Publisher:
ISBN:
Category : Cement coating
Languages : en
Pages : 131
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Book Description
Several bonded concrete overlays have recently been placed on street, highway, and airfield pavements using new equipment and techniques. This report summarizes the current state of the art and industry experience as well as reviewing procedures and performance of older bonded overlays. A review and summary of (a) surface preparation of the existing slab, (b) joint and crack treatment, (c) bonding methods, (d) concrete overlay mixtures, (e) curing methods, (f) jointing techniques, (g) performance of recent overlays to date, and (h) the use of reinforcement in bonded overlays are included. Also, a list of important conclusions and research needs is provided. (Author).
Author:
Publisher:
ISBN:
Category : Pavements, Concrete
Languages : en
Pages : 192
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Book Description
