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首页> 美国卫生研究院文献>The Scientific World Journal >Effects of Using Pozzolan and Portland Cement in the Treatment of Dispersive Clay
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Effects of Using Pozzolan and Portland Cement in the Treatment of Dispersive Clay

机译：火山灰和硅酸盐水泥在分散性粘土中的应用效果

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摘要

Use of dispersive clay as construction material requires treatment such as by chemical addition. Treatments to dispersive clay using pozzolan and Portland cement, singly and simultaneously, were carried out in this study. When used alone, the optimum amount of pozzolan required to treat a fully dispersive clay sample was 5%, but the curing time to reduce dispersion potential, from 100% to 30% or less, was 3 month long. On the other hand, also when used alone, a 3% cement content was capable of reducing dispersion potential to almost zero percent in only 7 days; and a 2% cement content was capable of achieving similar result in 14 days. However, treatment by cement alone is costly and could jeopardize the long term performance. Thus, a combined 5% pozzolan and 1.5% cement content was found capable of reducing dispersion potential from 100% to zero percent in 14 days. The results indicate that although simultaneous treatment with pozzolan and cement would extend the required curing time in comparison to treatment by cement alone of a higher content, the task could still be carried out in a reasonable period of curing time while avoiding the drawbacks of using either pozzolan or cement alone.
机译：使用分散粘土作为建筑材料需要进行处理，例如通过化学添加。在这项研究中，分别使用火山灰和波特兰水泥对分散粘土进行了处理。当单独使用时，处理完全分散的粘土样品所需的火山灰的最佳量为5％，但降低分散电位（从100％到30％或更少）的固化时间为3个月。另一方面，即使单独使用，水泥含量为3％时也能在7天之内将分散潜力降低到几乎为零。水泥含量为2％的水泥能够在14天内达到类似的效果。然而，仅用水泥处理费用昂贵，并且可能损害长期性能。因此，发现组合的5％火山灰和1.5％水泥含量能够在14天内将分散势从100％降低到0％。结果表明，尽管与单独使用较高含量的水泥处理相比，用火山灰和水泥同时处理会延长所需的固化时间，但仍可以在合理的固化时间内完成该任务，同时避免了使用两者之一的缺点。火山灰或单独的水泥。

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