Download or read book Solving Corrosion Problems of Bridge Surfaces Could Save Billions written by United States Accounting Office (GAO) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-27 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solving Corrosion Problems of Bridge Surfaces Could Save Billions

Download or read book Solving Corrosion Problems of Bridge Surfaces Could Save Billions written by United States. General Accounting Office and published by . This book was released on 1979 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Solving Corrosion Problems of Bridge Surfaces Could Save Billions written by United States. General Accounting Office and published by . This book was released on 1979 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transportation written by U S Government Accountability Office (G and published by BiblioGov. This book was released on 2013-06 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although bridge roadway surfaces (decks) were expected to provide relatively maintenance-free service for about 40 years, the Federal Highway Administration has found that some unprotected bridge decks require major repair within 5 to 10 years, and often must be replaced after 15 years of service. The major cause of this early deterioration is corrosion of the reinforcing steel bars in the bridge deck, brought about by chloride chemicals which are used to melt snow. About $6.3 billion is needed to restore the Nation's Federal-aid system bridge decks. Most States have indicated that, if present conditions are not improved, their currently reparable bridge decks will continue to deteriorate, and eventually require complete replacement at a much higher cost. A review of the problem indicates that a number of bridges in the Federal-aid system do not have a protective system on their decks. They contain either no areas or only small areas where chloride levels are high enough to cause bridge deck deterioration. If these bridge decks were protected with one of the systems now used for new bridge construction, significant savings could be realized by avoiding more expensive repairs later. Lack of funds is the primary reason that States have not installed protective systems on existing bridges. Funds available for bridge repair are generally budgeted for bridges so deteriorated that replacement of the deck is the only option. As a result, those bridge decks with little or no deterioration will continue to deteriorate, and eventually require repairs or replacements that are much more costly than the cost of the protective systems. Weaknesses also exist in the Federal Highway Administration's evaluation process to assess the performance of the technologies in extending the service life of the bridge decks.

Download or read book Solving Corrosion Problems of Bridge Surfaces Could Save Billions written by GENERAL ACCOUNTING OFFICE WASHINGTON DC PROCUREMENT AND SYSTEMS ACQUISITION DIV. and published by . This book was released on 1979 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: This problem originated in the mid-1950s when highway departments adopted a 'clear pavements' policy of heavily salting roadway surfaces to improve winter traffic conditions. With repeated applications, the chlorides penetrate the concrete surface, and eventually reach the reinforcing steel. Corrosion of the steel will occur when the chloride interacts with the moisture and oxygen in the concrete. Because the rusted steel occupies much more space, pressure is exerted on the concrete, and eventually potholes develop. As a result, in the late 1960s, the American Association of State Highway and Transportation officials requested the Transportation Research Board of the National Academy of Sciences to prepare a state-of-the-art report on the concrete bridge deck deterioration problem. This report, issued in 1970, summarized earlier research study efforts which identified corrosion of the reinforcing steel as the primary cause of bridge deck deterioration.

Download or read book Public Roads written by and published by . This book was released on 1981 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book GAO Documents written by United States. General Accounting Office and published by . This book was released on 1981 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalog of reports, decisions and opinions, testimonies and speeches.

Download or read book Durability Design of Concrete Structures in Severe Environments written by Odd E. Gjørv and published by CRC Press. This book was released on 2009-01-21 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: By designing in corrosion prevention and through preventive maintenance, the overall service cost of a concrete structure can be substantially reduced. This book takes a probabilistic approach to the engineering design issues for controlling durability and service life of concrete structures in severe environments. Many durability problems are caused by poor quality control as well as special problems during concrete construction. The issue of construction quality and variability need to be grasped before durability can be successfully controlled. This book helps by giving: reviews of field performance, deteriorating processes and current codes and practice methods for calculation of corrosion probability; performance-based concrete quality control; corrosion prevention and preventive maintenance calculation of life cycle costs and life cycle assessment recommended job specifications. Internationally relevant with a practical focus, this is the essential guide for consulting and construction engineers involved in the design and execution of new concrete structures.

Download or read book Annual Report of the General Accounting Office written by United States. General Accounting Office and published by . This book was released on 1978 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report Comptroller General of the United States written by United States. General Accounting Office and published by . This book was released on 1979 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1979 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1979 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Accounting Office Publications written by United States. General Accounting Office and published by . This book was released on 1978 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Accounting Office Publications written by and published by . This book was released on 1979-06 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1980 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Corrosion Effect of Stray Currents and the Techniques for Evaluating Corrosion of Rebars in Concrete written by Victor Chaker and published by ASTM International. This book was released on 1986 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Science Trends written by and published by . This book was released on 1978 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: