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原文传递 Repair of Steel Reinforced Concrete Structures.

题名：	Repair of Steel Reinforced Concrete Structures.
作者：	brown, r. lee, k. w.
关键词：	highway bridges, corrosion inhibitors, repair, mixtures, chlorides, salt, electrochemical tests, rebar, laboratory tests, test methods
摘要：	The objectives of this study are: (a) to develop a laboratory test method to evaluate corrosion inhibiting mixtures to be used in the repair of steel reinforced concrete structures; (b) to devise a simulated field repair test using ASTM G109 concrete beam samples containing salt; (c) to determine for each inhibitor whether there is a correlation in results between the simulated field concrete repair tests and the electrochemical laboratory tests in simulated concrete solutions. Although a successful, rapid, laboratory test was developed which could distinguish between inhibitors, development of a simulated repair proved more difficult, due to the variable permeation of chloride from sample to sample. This resulted in a situation where the initial conditions of some samples had a high chloride contents and others had low chloride content, making the interpretation of the data very difficult. The type of inhibitor was suspected of also influencing chloride content as one type of inhibitor required removal of the rebar from concrete while the others left concrete above the rebar during repair. The more concrete is removed to a larger depth, and then replaced the lower the chloride content around the rebar for later testing, which may influence the initiation of corrosion. / NOTE: Final rept. / Supplementary Notes: Sponsored by Rhode Island Dept. of Transportation, Providence. / Availability Note: Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
总页数：	u0813；54p
报告类型：	科技报告