Long-term effects of cathodic protection on prestressed concrete bridge components

Cover of: Long-term effects of cathodic protection on prestressed concrete bridge components |

Published by US Dept. of Transportation, Federal Highway Administration, Turner-Fairbank Highway Research Center in McLean, VA .

Written in English

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Subjects:

  • Bridges, Concrete -- Maintenance and repair,
  • Bridges, Concrete -- Floors -- Cathodic protection,
  • Prestressed concrete construction,
  • Metals -- Hydrogen embrittlement

Edition Notes

Book details

Statement[authors: W. Hartt ... et al.].
ContributionsHartt, William H., United States. Federal Highway Administration., Florida Atlantic University. Center for Marine Materials.
The Physical Object
Paginationix, 68 p. :
Number of Pages68
ID Numbers
Open LibraryOL17593407M
OCLC/WorldCa40217022

Download Long-term effects of cathodic protection on prestressed concrete bridge components

Precast prestressed concrete panels have been used as subdecks in bridge construction in Iowa and other states. To investigate the performance of these types of composite slabs at locations adjacent to abutment and pier diaphragms in skewed bridges, a research project which involved surveys of design agencies and precast producers, field inspections of existing bridges, analytical studies, and.

long-term effects of cathodic protection on prestressed concrete bridge components While cathodic protection effectively reduces or stops ongoing corrosion of reinforcing steel in concrete, applicability of this technology to prestressed members has been limited because of concerns regarding possible bond loss and hydrogen by: 1.

long-term effects of cathodic protection on prestressed concrete bridge components While cathodic protection effectively reduces or stops ongoing corrosion of reinforcing steel in concrete, applicability of this technology to prestressing steel has been limited because of concerns of possible bond loss and hydrogen embrittlement.

Get this from a library. Cathodic protection developments for prestressed concrete components. [J Wagner; United States. Federal Highway Administration. Office of Engineering and Highway Operations.; PSG Corrosion Engineering, Inc.;] -- The effects of cathodic protection on the embrittlement of high strength steel embedded in concrete were studied.

Prestressed concrete is a form of concrete used in construction. It is substantially "prestressed" during production, in a manner that strengthens it against tensile forces which will exist when in service.: 3–5 This compression is produced by the tensioning of high-strength "tendons" located within or adjacent to the concrete and is done to improve the performance of the concrete in service.

Long-term effects of cathodic protection on prestressed concrete bridge components / By William H. Hartt, Florida Atlantic University. Center for Marine Materials. and United States. Federal Highway Administration.

Abstract "April "Cover es bibliographical references (p. ).Final med by Florida Atlantic. Long-Term Effects of Cathodic Protection on Prestressed Concrete Structures: Hydrogen Embrittlement of Prestressing Steel D. Enos 1 Center for Electrochemical Science and Engineering, Department of Materials Science, University of Virginia, Thornton Hall, Charlottesville, VA,   Evaluating the Effectiveness of Hybrid Corrosion Protection Systems for Concrete.

The hybrid corrosion protection systems installed on the two structures were designed to provide an initial charge sufficient to arrest corrosion and to provide adequate current to maintain passivity for the remainder of the service life.

However, it has also been. Please cite this article as: J. Carmona, P. Garcés, M.A. Climent, Efficiency of a conductive cement-based anodic system for the application of cathodic protection, cathodic prevention and.

Cathodic protection cannot work with prestressed concrete structures that have electrically insulated, coated pipes. There is a positive experience in the case of a direct connection without coated pipes; this is the protection of buried prestressed concrete pipelines by zinc anodes.

The present chapter intends to include the following aspects for reinforced and prestressed concrete bridges: material specifications (US and European standards); different types of cast-in-situ or precast bridge decks like solid or voided slabs; beams; reinforcing and prestressing systems; details; losses and time-dependent effects in prestressing; design considerations.

Get this from a library. Cathodic protection developments for prestressed concrete components. [M Funahashi; J Wagner; W T Young; United States. Federal Highway Administration.; PSG Corrosion Engineering, Inc.] -- This is the final report in a study that evaluated the feasibility of using cathodic protection on prestressed concrete bridge members.

This report describes the evolution of cathodic protection of reinforced concrete bridges and its current state-of-the-art. It discusses how cathodic protection works, and the effectiveness of the technique.

An extensive history of cathodic protection of reinforced concrete is included that covers all aspects of completed projects. Corrosion of embedded steel rebars has a tremendous impact on the long-term performance of reinforced concrete (RC) structures, either prestressed or non-prestressed, accelerating its.

The consensus is that cathodic protection (CP) is the only substantiated method to arrest chloride-related corrosion of metals embedded in concrete. According to the U.S. Department of Transportation’s Federal Highway Administration, CP is the only rehabilitation technique that has been proven to stop corrosion in salt-contaminated bridge.

Book: Cathodic protection of prestressed concrete bridge pilings in a marine environment Title: Cathodic protection of prestressed concrete bridge pilings in a marine environment Full Record.

Long-Term Effects of Electrochemical Chloride Extraction on Laboratory Specimens and Concrete Bridge Components Chloride-induced corrosion. No prestressed steel. No alkali-reactive aggregate. J.E., Fong, K.F., and Shue, T.J. () Electrochemical Chloride Removal and Protection of Concrete Bridge Components: Field Trials, Report No.

Long-term effects of cathodic protection on prestressed concrete bridge components / (McLean, Va.: Federal Highway Administration, Turner-Fairbank Highway Research Center ; [Springfield, VA: Available through the National Technical Information Service, ]), by William H.

Hartt, Florida Atlantic University. Center for Marine Materials, and. Cathodic protection is a method to control the corrosion of steel in contaminated concrete that works by making the embedded reinforcing steel cathodic.

When the steel becomes cathodic, hydroxyl ions are accumulated around it making it passive for longer time. Life-Cycle Civil Engineering contains the papers presented at the First International Symposium on Life-Cycle Civil Engineering (IALCCE’08), held in Villa Monastero, Varenna, Lake Como, Italy, June, It consists of a book and a CD-ROM containing papers, including eight keynote papers and technical contributions from 28 countries.

The papers deal with the state of. Prestressed concrete bridges: design and construction. Next > Prestressed concrete bridges: design and construction. Prestressing components and equipment Authors: Nigel R.

Hewson. Nigel R. Hewson. Search for articles by this author. Author Affiliations Show All. Published Effects. Broomfield, J. and J. Tinnea, Cathodic Protection of Reinforced Concrete Bridge Components, SHRP-C/ UWP, Strategic Highway Research Program/ National Research Council,78 pp.

To Study and Disseminate Information Concerning Catho- dic Protection, Technology Exchange Group XRCC, National Association of Corrosion Engineers. Cathodic protection is not recommended for prestressed concrete structures with very diverse resistivity, which is often caused by large variations in moisture content.

â ¢ When applying cathodic protection to prestressed concrete, the voltage should be kept low enough that the potential required for hydrogen generation at the surface of the. (For more information, read the article Hybrid Corrosion Protection Systems for Prestressed Concrete Bridges.) In conclusion, it is important for owners of high-value assets such as hotels to consider the cost implications of ignoring the effects of corrosion on concrete.

Cathodic protection (CP) is being increasingly used on reinforced concrete structures to protect steel reinforcing bars from corrosion in aggressive conditions. Due to the complexity of environmental conditions, the design specifications in national and international standards are still open to discussion to achieve both sufficient and efficient protection for reinforced concrete structures in.

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w ashington, dc, 6 december bridge inspection, maintenance, and repair paragraph page c hapter 1. introduction section i. general information.

Reinforced concrete is everywhere. But unlike plain concrete, which can last for centuries, reinforced concrete can deteriorate in decades as the reinforcing bars succumb to rust. @article{osti_, title = {Cathodic protection criteria for prestressed concrete pipe -- an update}, author = {Hall, S C}, abstractNote = {Prestressed concrete cylinder pipe (PCCP) is used in water and waste water systems that serve virtually every major city in North America.

Under certain conditions, such as high chloride environments, the steel can depassivate, leading to corrosion. prestressed concrete bridge members. However, because of the use of uncoated prestressing steel, the use of corrosion inhibitors in prestressed, concrete members has gained acceptance.

For most corrosion-protection measures, the basic principle is to prevent the chloride ions from. New material on the relation between cracking in concrete and corrosion of reinforce­ ment, prestressing with unbonded tendons, skew-girder bridges, and cable-stayed bridges has been added.

Most importantly, however, the presentation of the material has been extensively reworked to improve clarity and consistency. Philadelphia’s Walnut Lane Bridge, completed in lateis considered the first major prestressed-concrete bridge in the U.S.

Gustave Magnel, a Belgian engineer, and Charles Zollman, Magnel’s student, designed the bridge. Each of the post-tensioned concrete beams was cast at the bridge. different methods for protecting reinforced concrete bridges from corrosion damage.

The methods include alternative reinforcement and slab design, barrier methods, electrochemical methods, and corrosion inhibitors.

Prestressed concrete decks are commonly used for bridges with spans between 25m and m and provide economic, durable and aesthetic solutions in most situations where bridges are needed. Concrete remains the most common material for bridge construction around the world, and prestressed concrete is frequently the material of choice.

Extensively illustrated throughout, this invaluable book /5(4). The use of cathodic protection for corrosion resistance is highly attractive from the viewpoint of simplicity and potential long-term effectiveness.

This paper presents the theory the corrosion of reinforcing steel in concrete and cathodic protection theory. Cathodic protection design considerations as applied to concrete bridge decks are reviewed. constructed of reinforced concrete or prestressed concrete. It is important that the bridge inspector understand the basic characteristics of concrete in order to efficiently inspect and evaluate a concrete bridge structure.

Concrete, commonly mislabeled as "cement", is a mixture of various components. Gandy Bridge The Gandy Bridge built in ’s connects St. Petersburg to Tampa. The bridgehas approximately piers comprising five or eight prestressed concrete piles with cm x cm (20 in x 20 in.) cross section.

The original plan was to just wrap one heavily corroded pile (Fig. Cathodic protection (CP) is a technique used to control the corrosion of a metal surface by making it the cathode of an electrochemical cell.

A simple method of protection connects the metal to be protected to a more easily corroded "sacrificial metal" to act as the sacrificial metal then corrodes instead of the protected metal. The impact on bridge reliability, of prestressing steel deterioration and tendon rupture created by corrosion mechanisms, is much more critical and rapid than that of any other component of a prestressed concrete bridge.

Author of Evaluation of super-water reducers for highway applications, Manual on control of air content in concrete, Evaluation of Troxler model water/cement gauge, The hair shaft - aesthetics, disease and damage, Rapid determination of the chloride permeability of concrete, Galvanic cathodic protection for reinforced concrete bridge decks, Silica fume concrete for bridge decks, Control.

Prestressed concrete bridges with corrugated steel webs have emerged as a promising bridge form due to their remarkable advantages such as efficient prestressing of concrete, high buckling strength of steel webs and lightness. The full-range and long-term behaviour of these bridges was studied both numerically and experimentally.

A sandwich beam theory was developed to investigate. corrosion, and in increasingly being applied to substructures. The Federal Highway Administration has stated that cathodic protection is the only method known to stop corrosion damage regardless of the level of chloride within the structure.

However, of the thousands of bridges suffering from corrosion, SHRP has identified cathodic.The long-term behavior of a typical bridge of this type was studied and compared with that of conventional PC bridges with flat steel and concrete webs.

The effects of diaphragm and interaction between web shear deformation and local flange bending of the bridge were found to relieve with time.Membership. In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.

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