Strength and Stiffness of Artificial Organic Soil Admixed with Lime Zeolite
Strength and Stiffness of Artificial Organic Soil Admixed with Lime Zeolite
复制标题
掺有石灰沸石的人造有机土的强度和刚度
DOI：
10.4028/www.scientific.net/amm.773-774.1422
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Jingmin Kan
中科院分区：
文献类型：
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作者：
F. N. Ling;K. Kassim;Ahmad Tarmizi Abdul Karim;Jingmin Kan
化学稳定剂特别是钙基稳定剂，即石灰和水泥，已被广泛应用于土壤的改性和稳定。研究人员进行了广泛的研究，通过引入各种类型的混合石灰和水泥来提高稳定剂的有效性和成本效益。无侧限抗压强度试验（UCT）是一种最简单、快速的强度试验方法，常被研究人员用来检验新型稳定剂的适用性和成功性。本研究的目的是建立无侧限抗压强度和切线模量，E在50%的无侧限抗压强度掺石灰沸石的人工有机土的关系和相关性。将商品高岭土与腐植酸粉按不同比例混合，人工配制成A型和B型两种人工有机土。将人工有机土与石灰沸石按不同比例混合，在50°C的烘箱中养护7、28和56天。通过使用UCT测试架压缩样本来确定材料的强度，并且通过在应力-应变曲线上绘制极限强度的50%处的线性斜率来计算切线模量E50。研究结果表明，强度和E50是密切相关的，作为材料刚度的重要指标，以及其抵抗压缩载荷的能力。
Chemical stabilizers especially calcium based stabilizer, namely lime and cement had been widely used to modify and stabilize the soil. Extensive studies were carried out by researchers to improve the effectiveness and cost-benefit of stabilizers by introducing various types of blended lime and cement. Unconfined compressive test (UCT), one of the most simple and quick strength tests, is commonly used by researchers to indicate the suitability and successfulness of newly introduced stabilizer. The aim of this study is to establish the relationship and correlation of unconfined compressive strength and tangent modulus, E at 50% of unconfined compressive strength of artificial organic soil admixed with lime zeolite. Two types of artificial organic soils, which named as Type A and Type B were prepared manually by mixing commercial kaolin with humic acid powder in different percentages. The artificial organic soils were admixed with blended lime zeolite in different ratio and cured for 7, 28 and 56 days in an oven with controlled temperature of 50°c. The strength of the materials were determined by compressing the specimens using a UCT testing frame and the tangent modulus, E50 were calculated by plotting a linear slope at 50% of ultimate strength over stress-strain curve. The findings of the study showed that the strength and E50 are strongly correlated and important as the indicator of rigidity of the material as well as its capability to resist compressive load.