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首页> 外文期刊>Bulletin of engineering geology and the environment >Stabilization of high plasticity clay with lime and gypsum (Ankara, Turkey)
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Stabilization of high plasticity clay with lime and gypsum (Ankara, Turkey)

机译：用石灰和石膏稳定高塑性粘土（土耳其安卡拉）

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摘要

Clayey soils might lead to swelling, settlement and strength issues when considered as foundation or fill material. The use of additives to stabilize soils has been a major concern in the improvement of engineering characteristics. Upper Pliocene-aged clays cause various geotechnical problems in the residential area of Ankara. The aim of this study is to investigate the effect of lime, gypsum and lime with gypsum mixtures on the swell percent, swell pressure and unconfined compression strength of highly plastic clays in the Batikent region to specify an appropriate mixture ratio for soil stabilization. The optimum water content and maximum dry unit weight of clay were determined using standard compaction tests. Lime, gypsum and lime with gypsum mixtures were re-compacted in order to evaluate their effect on the swell percent, swell pressure and unconfined compression strength over curing time. Swell percent and swell pressure reduce with increasing additive percent over time, while the strength increases. The lowest improvement ratio is determined for gypsum. The optimum mixture is concluded to be 6 % lime, which corresponds to a 99.55 % decrease for swell percent, 98.98 % decrease for swell pressure and 191.87 % increase for the unconfined compressive strength for 90 days.
机译：当被视为地基或填充材料时，黏土可能导致膨胀，沉降和强度问题。使用添加剂来稳定土壤一直是改善工程特性的主要考虑因素。上新世纪上层粘土在安卡拉的住宅区引起各种岩土工程问题。这项研究的目的是研究石灰，石膏和石灰与石膏混合物对Batikent地区高塑性粘土的溶胀百分比，溶胀压力和无侧限抗压强度的影响，以指定合适的混合比来稳定土壤。使用标准压实测试确定粘土的最佳含水量和最大干重。将石灰，石膏和石灰与石膏混合物重新压实，以评估其在固化时间内对溶胀百分比，溶胀压力和无侧限抗压强度的影响。溶胀百分比和溶胀压力随添加剂百分比的增加而降低，而强度则增加。确定最低的石膏改善率。最佳混合物的结论是6％的石灰，其溶胀百分比降低99.55％，溶胀压力降低98.98％，无约束抗压强度90天增加191.87％。

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