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Author : Bipin Adhikari
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)
Download or read book Performance and Durability Assessment of Concrete Bridge Deck Sealants written by Bipin Adhikari and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : José Antonio Pincheira
Publisher :
ISBN 13 :
Total Pages : 62 pages
Book Rating : 4.3/5 (555 download)
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.
Author : Karl Andrew Johnson
Publisher :
ISBN 13 :
Total Pages : 184 pages
Book Rating : 4.:/5 (858 download)
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:
Author : José Antonio Pincheira
Publisher :
ISBN 13 :
Total Pages : 166 pages
Book Rating : 4.:/5 (1 download)
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:
Author : Melissa A. Dorshorst
Publisher :
ISBN 13 :
Total Pages : 374 pages
Book Rating : 4.:/5 (89 download)
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:
Author : Richard J. Irwin
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (359 download)
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.
Author : William Curra
Publisher :
ISBN 13 :
Total Pages : 41 pages
Book Rating : 4.:/5 (222 download)
Download or read book Evaluation of Sealers for Concrete Bridges written by William Curra and published by . This book was released on 1990 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: An evaluation of representatives of the most popular types of concrete bridge deck sealers was conducted using a 2 pronged approach: performance testing via accelerated weathering coupled with water immersion, and indirect testing using instrumental and analytical techniques. The goals of the project were to assess the ability of the sealers to protect embedded reinforcing steel from corrosion and to develop an effective test procedure for screening commercial products for use by the Department on new construction.
Author : José A. Pincheira
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (754 download)
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.
Author : Jonathan Riley Dunn
Publisher :
ISBN 13 :
Total Pages : 118 pages
Book Rating : 4.:/5 (936 download)
Download or read book Performance of Concrete Bridge Deck Sealers written by Jonathan Riley Dunn and published by . This book was released on 2015 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this research was to determine an improved method for evaluating bridge deck sealer products for the Alabama Department of Transportation (ALDOT) through a synthesis of two testing methods: NCHRP Report 244 Series II tests and standards developed by the Alberta Ministry of Transportation (BT Series). Five sealer products were evaluated for their resistance to moisture and chloride ingress, performance after simulated traffic wear, and depth of sealer penetration into the concrete. The products tested included four epoxy-based sealer products and one sodium silicate sealer product. The sealers were evaluated on three different concrete mix designs representing the range of bridge deck concrete in service with ALDOT. Concrete cube specimens were fabricated, sealed, conditioned, and subjected to different tests. One test evaluated the waterproofing performance of sealers before and after abrasive conditioning (representing traffic wear). Another test determined the products' ability to resist chloride penetration and their waterproofing performance in a saltwater solution. The chloride content was measured by potentiometric titration with silver nitrate and X-ray fluorescence spectroscopy (XRF). Sealer penetration depth as determined by a dye method and scanning electron microscopy (SEM). Initial (pre-abrasion) waterproofing performance results generally showed a good correlation to chloride resistance. XRF and titration analyses provided nearly identical results for measuring chlorides in concrete; however, XRF is a preferred method for determination of chloride content because it is much faster than titration. Two epoxy sealers outperformed all products for all evaluation criteria. A third epoxy sealer had good overall performance, but many specimens sealed with this product developed cracks that warranted further investigation. The sodium silicate sealer performed poorly compared to all four epoxy-based sealers. The epoxy-based sealers did not exhibit any measurable sealer penetration into the concrete and the sodium silicate sealer penetrated less than 100 mm into the concrete.
Author :
Publisher :
ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.:/5 (91 download)
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.
Author :
Publisher :
ISBN 13 :
Total Pages : 57 pages
Book Rating : 4.:/5 (946 download)
Download or read book Evaluation of Bridge Deck Sealers written by and published by . This book was released on 2014 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study focuses on the evaluation of bridge deck sealers commonly used on highway bridge decks and their relative performance.
Author : Ignacio J. Navarro
Publisher : Infinite Study
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4./5 ( download)
Download or read book Sustainability assessment of concrete bridge deck designs in coastal environments using neutrosophic criteria weights written by Ignacio J. Navarro and published by Infinite Study. This book was released on with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essential infrastructures such as bridges are designed to provide a long-lasting and intergenerational functionality. In those cases, sustainability becomes of paramount importance when the infrastructure is exposed to aggressive environments, which can jeopardise their durability and lead to significant maintenance demands. The assessment of sustainability is however often complex and uncertain. The present study assesses the sustainability performance of 16 alternative designs of a concrete bridge deck in a coastal environment on the basis of a neutrosophic group analytic hierarchy process (AHP). The use of neutrosophic logic in the field of multi-criteria decision-making, as a generalisation of the widely used fuzzy logic, allows for a proper capture of the vagueness and uncertainties of the judgements emitted by the decision-makers. TOPSIS technique is then used to aggregate the different sustainability criteria. From the results, it is derived that only the simultaneous consideration of the economic, environmental and social life cycle impacts of a design shall lead to adequate sustainable designs. Choices made based on the optimality of a design in only some of the sustainability pillars will lead to erroneous conclusions. The use of concrete with silica fume has resulted in a sustainability performance of 46.3% better than conventional concrete designs.
Author :
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.3/5 (243 download)
Download or read book Bridge Deck Joint-sealing Systems written by and published by . This book was released on 1964 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparative Evaluation of the Waterproofing and Durability Performance of Concrete Sealers written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mark G. Hagen
Publisher :
ISBN 13 :
Total Pages : 25 pages
Book Rating : 4.:/5 (343 download)
Download or read book Field Performance of Penetrating Sealers for Concrete Bridge Decks written by Mark G. Hagen and published by . This book was released on 1995 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Upul Attanayaka
Publisher :
ISBN 13 :
Total Pages : 82 pages
Book Rating : 4.:/5 (522 download)
Download or read book Criteria and Benefits of Penetrating Sealants for Concrete Bridge Decks written by Upul Attanayaka and published by . This book was released on 2002 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report evaluates the potential durability gained by the use of penetrating sealants on concrete bridge decks. The factors affecting the depth of penetration are identified through a fundamental approach and the literature on penetrating sealants, concrete deterioration, concrete durability, and concrete permeability. Properties and the use of silane, siloxane, and high molecular weight methacrylate sealers are discussed.
Author : J.C. Beech
Publisher : Routledge
ISBN 13 : 113674360X
Total Pages : 150 pages
Book Rating : 4.1/5 (367 download)
Download or read book Durability of Building Sealants written by J.C. Beech and published by Routledge. This book was released on 2013-09-13 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the papers given at the RILEM Seminar held at the Building Research Establishment, Garston, UK in October 1994. The book provides an opportunity for researchers to review up-to-date progress towards the achievement of the objectives of the standardisation of laboratory techniques of sealants in the variety of service conditions to which they are exposed.
