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Effects of DSS Corrosion Inhibitor on Physical Characteristics of Concrete.
| 题名： | Effects of DSS Corrosion Inhibitor on Physical Characteristics of Concrete. |
| 作者： | distlehorst, j. a. wojakowski, j. b. |
| 关键词： | deterioration, physical effects, concrete mixes, kansas, de-foaming agents |
| 摘要： | Corrosion of reinforcing steel in bridge decks and subsequent deterioration of the structure continues to challenge the materials engineering community. Hycrete DSS is a new product which has shown promising corrosion inhibiting behavior in testing by several northeastern states. The physical effects of adding DSS corrosion inhibitor to a standard Kansas concrete mix were investigated in the summer of 2003 by the concrete research staff of the Kansas Department of Transportation. Four 1.70 cubic foot batches of concrete were produced: a control mix, a mix with air-entraining admixture, a mix with Hycrete DSS, and a mixture with Hycrete DSS and a de-foaming agent. The conclusions were: (1) Hycrete DSS, used with a defoaming agent, reduces the permeability to one-tenth to one-third of plain air-entrained concrete as measured by the evapo-transpiration test; (2) The use of the de-foaming agent with the Hycrete DSS additive is highly recommended to control the amount of air in the mix. In this test, the de-foaming agent reduced the total air content by over 50%, into the normal air-content range for air-entrained concrete; (3) The addition of Hycrete DSS causes an approximately 10% strength reduction from expected valued for concrete with similar air contents; and (4) The addition of Hycrete DSS had no appreciable effect on the slump of the concrete or the proportion of entrained air content to total air content. / NOTE: Final rept. Summer 03-Jan 07. / Supplementary Notes: Sponsored by Kansas Dept. of Transportation, Topeka. Bureau of Materials and Research. / Availability Note: Available on CD-ROM and in color paper copy only. 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： | u0801；14p |
| 报告类型： | 科技报告 |
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