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首页> 外文会议>Admixtures - Enhancing Concrete Performance >INVESTIGATION OF KILN DUST BF SLAG AND CORROSION INHIBITORS INFLUENCE IN CONCRETE DURABILITY
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INVESTIGATION OF KILN DUST BF SLAG AND CORROSION INHIBITORS INFLUENCE IN CONCRETE DURABILITY

机译：窑渣高炉渣的研究及缓蚀剂对混凝土耐久性的影响

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摘要

It is a well-known fact that the properties of concrete can be improved by using suitable additives, such as natural or artificial pozzolans. The incorporation of industrial by-products such as fly ash, blast furnace slag and silica fume as additives in cement and concrete is a well-established procedure that may effectively improve the resistance of concrete to various chemical attacks and thus its long-term durability. Cement Kiln Dust (CKD) has been used in previous studies as filler in cement and concrete. The proportions of CKD and pozzolanic materials employed in these studies did not provide additional protection against corrosion as was initially expected. The scope of this study is to investigate the performance of CKD when used with Blast Furnace Slag (BFS) and corrosion inhibitors and to determine the optimum proportions of these additions. The incorporation of CKD at a suitable percentage could provide a sufficient increase in alkalinity and maintain the pH value at a high level, providing additional protection against corrosion. The test results indicated that the use of CKD with the incorporation of BFS provided an equal or better level of strength as that obtained by the reference PC. In addition, all categories of specimens containing CKD exhibited lower corrosion rates than the reference ones. Specimens with corrosion inhibitor further improved the anticorrosion performance of the composite cements.
机译：众所周知的事实是，通过使用合适的添加剂，例如天然或人造火山灰，可以改善混凝土的性能。在水泥和混凝土中掺入粉煤灰，高炉矿渣和硅粉等工业副产品作为添加剂是一种行之有效的程序，可以有效提高混凝土对各种化学侵蚀的抵抗力，并因此提高其长期耐久性。水泥窑粉尘（CKD）在先前的研究中已用作水泥和混凝土的填料。这些研究中使用的CKD和火山灰材料的比例没有提供最初预期的额外防腐蚀保护。本研究的范围是研究与高炉矿渣（BFS）和缓蚀剂一起使用时CKD的性能，并确定这些添加剂的最佳比例。以适当的百分比掺入CKD可提供足够的碱度提高，并将pH值保持在较高水平，从而提供额外的防腐蚀保护。测试结果表明，结合使用CKD和BFS可以提供​​与参考PC相同或更好的强度。此外，所有包含CKD的样品的腐蚀速率均低于参考样品。带有腐蚀抑制剂的样品进一步改善了复合水泥的防腐性能。

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