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Concrete Bridge Deck Crack Sealant Evaluation And Implementation
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Book Synopsis Concrete Bridge Deck Crack Sealant Evaluation and Implementation by :
Download or read book Concrete Bridge Deck Crack Sealant Evaluation and Implementation written by and published by . This book was released on 2014 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: A total of 12 sealant products were applied on the Smith Avenue High Bridge in St. Paul and evaluated over a three-year period. Details, such as surface preparation and application methods, were documented for each product and are conditions specific to each product. Sealant performance was evaluated through field permeability testing, visual observations, and petrographic examination. Visual observations provided evidence that approximately 67 percent of test sections were performing effectively after one winter but only 4 percent after two winters. After three winters, 58 percent of the test locations were visually characterized as ineffective and 42 percent as partially effective. Product performance significantly reduced over the third winter, primarily due to major loss of sealant and surface sand materials. Coring was performed after the second winter, and the cores were photographed and subjected to a petrographic evaluation. The observed depth of sealant penetration was highly variable and likely is dependent on the presence of debris within the crack, original crack width, and the deck temperatures during application. The predominant failure mode observed under magnification was detachment from the crack face and not within the sealant materials. Based on numerous factors, four epoxy and three methacrylate products were recommended for consideration on MnDOT's Approved Products List. Each product recommendation contains the surface preparation and application method conditions under which they were applied. It is also recommended that MnDOT look into increasing the frequency of its routine crack sealing maintenance program from the current five-year cycle.
Book Synopsis Evaluation of Roadware 10-Minute Concrete Mender for PCC Bridge Deck Crack Sealing by : Khader Abu Al-eis
Download or read book Evaluation of Roadware 10-Minute Concrete Mender for PCC Bridge Deck Crack Sealing written by Khader Abu Al-eis and published by . This book was released on 2004 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Crack and Concrete Deck Sealant Performance by : Karl Andrew Johnson
Download or read book Crack and Concrete Deck Sealant Performance written by Karl Andrew Johnson and published by . This book was released on 2013 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Concrete Deck and Crack Sealers by : José Antonio Pincheira
Download or read book Evaluation of Concrete Deck and Crack Sealers written by José Antonio Pincheira and published by . This book was released on 2005 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development and Layout of a Protocol for the Field Performance of Concrete Deck and Crack Sealants by : José Antonio Pincheira
Download or read book Development and Layout of a Protocol for the Field Performance of Concrete Deck and Crack Sealants written by José Antonio Pincheira and published by . This book was released on 2009 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this project was to develop and layout a protocol for the long-term monitoring and assessment of the performance of concrete deck and crack sealants in the field. To accomplish this goal, a total of six bridge decks were chosen for study. The decks have ages that vary from 4 to 30 years old, are all in good condition, though some presented a variety of longitudinal, transverse and diagonal cracking. In each deck, test segments were laid out along one lane in four of the six bridges. Drill powder samples were extracted in each segment in order to determine the in-situ, near-surface chloride ion content of the deck. Laboratory analyses of the samples showed that the chloride ion content varied between 3.2 lb/cy for the younger decks (3 years old) and 20.8 lb/cy for the older decks (28 years old). Based on the recommendations of a previous laboratory investigation, a pool of the best performing deck and crack sealants were selected to be applied in the decks. In two bridges, deck segments were sealed with four deck sealants while one segment was left unsealed to be used as a control segment. Additionally, the cracks in each of these segments were sealed with five crack sealants. While two other decks were also scheduled for sealing as part of this phase of the project, they were not done because the required curing time for some of the products was longer than deemed acceptable by DOT crews for these high traffic bridges. It is recommended, however, that every effort be made to have these decks be sealed in the near future. The remaining two bridges had been sealed at the time of construction. While no specific information could be secured about the product used in these decks, the low chloride ion content in these decks suggested that the applied product has helped reduce the ingress of chloride ions. Therefore, it is recommended that these decks continue to be monitored over time. Based on the inspections and the data collected in the field, a protocol and schedule for the continuing monitoring of sealant performance is presented.
Book Synopsis Protective Coatings for Concrete Bridge Decks by : Richard J. Irwin
Download or read book Protective Coatings for Concrete Bridge Decks written by Richard J. Irwin and published by . This book was released on 1969 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Performance of protective coatings for bridge decks is evaluated. Applications to bridges on the New York State highway system from 1961 through 1967 included 1) surface overlays, 2) membranes between the structural slab and bituminous wearing course, and 3) surface sealants. Overlays and membranes consisted of epoxies, polyesters, polyurethanes, latexes, neoprenes, silicone rubbers, and asphalt cutbacks. Surface sealants included silicones, distillate oils, and linseed oil. None of the surface overlays lasted more than 2 to 3 yr. However, a flexible polyester resin with fiber glass has provided satisfactory service for 1-1/2 yr and will remain under observation. Leakage of box-girder bridges with a membrane was primarily due to shear-key construction (since modified), while the same materials applied to composite bridges were associated with leakage that could not be explained. A more comprehensive survey of membranes is planned. Silicone and distillate oil sealants on non-air-entrained concrete did not improve long-term durability. Air-entrained concrete, both with and without linseed oil treatment, showed no evidence of deterioration after 4 yr of exposure.
Book Synopsis Technologies for Improving the Evaluation and Repair of Concrete Bridge Decks by :
Download or read book Technologies for Improving the Evaluation and Repair of Concrete Bridge Decks written by and published by . This book was released on 1998 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Control and Repair of Bridge Deck Cracking by : Robert J. Frosch
Download or read book Control and Repair of Bridge Deck Cracking written by Robert J. Frosch and published by . This book was released on 2010-11-15 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Bridge Deck Repair and Protective Systems by : Herbert N. Swanson
Download or read book Evaluation of Bridge Deck Repair and Protective Systems written by Herbert N. Swanson and published by . This book was released on 1977 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bridge Deck Cracking Evaluation by :
Download or read book Bridge Deck Cracking Evaluation written by and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transverse cracking of concrete bridge decks continues to be an issue for the Montana Department of Transportation (MDT) and is considered a common issue reported among many state departments of transportation (DOTs). In the last 25 years with the introduction of high performance concrete (HPC) in bridge decks to lower permeability and with the use of finer ground cements (to increase early age strength gain and construction schedule), the susceptibility of bridge deck cracking has increased. Cracking commonly leads to a reduction in service life and increased maintenance costs, primarily due to accelerated corrosion of reinforcing steel in the deck. Identifying the causes of bridge deck cracking and providing prevention can be complex and challenging, but is very important for maintaining longevity of the bridge deck. To assist MDT with diagnosing and mitigating the causes of transverse cracking of bridge decks, WJE implemented a multi-disciplinary approach including a literature review, field inspections, bridge deck instrumentation, laboratory evaluations, and finite element modeling (FEM). From this research, WJE found the primary causes were related to non-uniform moisture gradients, drying shrinkage, and specific winter curing procedures. Based on these findings, WJE recommended improvements to mixture proportions, construction practices, and design considerations.
Book Synopsis Evaluation of Portland Cement Concrete for Permanent Bridge Deck Repair by : Kenneth C. Clear
Download or read book Evaluation of Portland Cement Concrete for Permanent Bridge Deck Repair written by Kenneth C. Clear and published by . This book was released on 1974 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effectiveness and Relative Performance of Concrete Bridge Deck and Crack Sealants by : Melissa A. Dorshorst
Download or read book Effectiveness and Relative Performance of Concrete Bridge Deck and Crack Sealants written by Melissa A. Dorshorst and published by . This book was released on 2005 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Concrete Bridge Deck Crack Sealing by : Ashraf M. Rahim
Download or read book Concrete Bridge Deck Crack Sealing written by Ashraf M. Rahim and published by . This book was released on 2006 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effectiveness and Performance of Crack Sealants for Bridge Decks by : José A. Pincheira
Download or read book Effectiveness and Performance of Crack Sealants for Bridge Decks written by José A. Pincheira and published by . This book was released on 2009 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this study was to assess the effectiveness and performance of selected products for sealing cracks in concrete bridge decks. The project was a follow up study of an earlier investigation to expand the selection of crack sealers for use in the field. A total of nine crack sealants were tested in this study under laboratory conditions that simulated the exposure to deicing salts and freeze?thaw cycles encountered in practice. Five of the products had been tested earlier under the same laboratory conditions but for a limited range of crack widths. Four additional products were also included in this study. Based on the test results, the performance of the sealants was evaluated and ranked, and recommendations for their use in the field are provided.
Book Synopsis Evaluation of Bridge Deck Protective Strategies by : Khossrow Babaei
Download or read book Evaluation of Bridge Deck Protective Strategies written by Khossrow Babaei and published by Transportation Research Board National Research. This book was released on 1987 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Concrete Bridge Protection and Rehabilitation by : Michael M. Sprinkel
Download or read book Concrete Bridge Protection and Rehabilitation written by Michael M. Sprinkel and published by Strategic Highway Research Program (Shrp). This book was released on 1993 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the rapid methods used by state highway agencies for the protection, repair and rehabilitation of bridge decks. The report is based on a review of the literature; the responses to questionnaires sent to state departments of transportation, Canadian provinces, selected turnpike and thruway authorities, technology transfer centers, and material suppliers; and the evaluation of 50 bridge decks located in seven states. Polymer overlays, sealers, high-early strength hydraulic cement concrete overlays, and patches are compared for their performance characteristics and service life.
Book Synopsis Diagnostic Evaluation and Repair of Deteriorated Concrete Bridges by : Ahmed Al-Ostaz
Download or read book Diagnostic Evaluation and Repair of Deteriorated Concrete Bridges written by Ahmed Al-Ostaz and published by . This book was released on 2004 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
