原文传递
Field Studies of Concrete Containing Salts of an Alkenyl-Substituted Succinic Acid. Final rept. for 1 Sep 04-30 Jun 08.
| 题名： | Field Studies of Concrete Containing Salts of an Alkenyl-Substituted Succinic Acid. Final rept. for 1 Sep 04-30 Jun 08. |
| 作者： | Civjan-S.A.; Crellin-B.J. |
| 关键词： | *Concrete-; *Corrision-inhibitor; *Hycrete-DSS.;Concrete-mixes; Large-scale-tests; Implementation-projects. |
| 摘要： | The effects of the corrosion inhibitor Hycrete DSS on the physical characteristics of concrete, at full production scale, were evaluated. An extensive literature review, methods for using Hycrete DSS in standard concrete mix designs, results from standardized testing of concrete mixes and implementation projects are presented. Experimental testing included 6 large-scale pours at 3 ready-mixed concrete plants in New England and 1 precast concrete facility. A total of 10 Hycrete DSS mixes and 5 representative control mixes were tested. In these large scale tests it was found Hycrete DSS has no detriment to workability and entrained air at desired levels could be obtained consistently. The absorption of hardened concrete containing Hycrete DSS was less than half of values obtained in the control mixes. If no alterations were made to a mix design, Hycrete DSS was found to reduce the compressive strength of a concrete mix in comparison to the control, with related impact on freeze-thaw durability and bond strength. However the required design parameters for each mix were met or exceeded. Four applications, including methods for long term corrosion monitoring, were chosen as potential implementation projects. Two projects were completed; major structural components of a ferry terminal (Maine) and a bridge curb (Vermont). Initial ferry terminal concrete batching procedures required modifications to meet specified air content. Other considered implementations included patching of deteriorated overpass bridge bent columns (Massachusetts) and large precast culverts (New York). Highway barriers previously implemented by the Connecticut Department of Transportation (Connecticut) are also described. |
| 报告类型： | 科技报告 |
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