Compressive Strength Characteristics of Trass Stabilized Dredged Soil

K. A. Utama, T. Harianto, Achmad Bakri Muhiddin, Ardy Arsyad
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Abstract

Landslides from Mount Bawakaraeng caldera in 2004 has caused high dam sedimentation at the lower reaches of the Jeneberang River. The availability of this large sedimentary material makes this material need to be considered as an alternative to new materials in the geotechnical field. However, the results of laboratory tests applied to sedimentary materials show that the mechanical characteristics of these materials are not sufficient for construction materials. Therefore, it is very important to conduct a study on how to improve the quality of dredged soil by adding Trass as stabilizing agent to improve the quality of the mechanical properties of the dredged soil. This study aims to analyze the mechanical characteristics of the dredged soil stabilized with Trass. The research was conducted by adding Trass with composition 3%; 6%; 9% and 12%; respectively to the dry weight of the dredged soil. The curing time was applied for a period of 3, 7 and 14 days to analyze the significant binding of Trass to the stabilized dredged soil. Laboratory tests was conducted to the density test and unconfined compression test. The results showed that there was an increase in the maximum dry density of the dredged soil between 1.41% - 3.56% due to the addition of trass, and a decrease in the optimum water content between 0.8% - 2.7%. In addition, there was an increase in the value of free compressive strength from 47.76% to 388.89% in the trass stabilized dredged soil during the curing period of 3, 7 and 14 days. The use of dredged soil and trass as stabilizing agent can be an alternative option in soil improvement efforts based on the utilization of waste material and local content potential.
碎石稳定疏浚土抗压强度特性研究
2004年Bawakaraeng火山喷发的山体滑坡造成了Jeneberang河下游的大坝淤积。这种大型沉积材料的可用性使得这种材料需要被视为岩土工程领域新材料的替代品。然而,应用于沉积材料的实验室试验结果表明,这些材料的力学特性不足以用于建筑材料。因此,研究如何通过添加垃圾作为稳定剂来改善疏浚土的质量,从而提高疏浚土的力学性能质量是非常重要的。本研究旨在分析垃圾稳定的疏浚土的力学特性。研究采用添加垃圾3%的组合物;6%;9%和12%;分别为疏浚土的干重。养护时间分别为3、7和14天,以分析垃圾与稳定的疏浚土的显著结合。对密度试验和无侧限压缩试验进行了室内试验。结果表明:添加垃圾可使疏浚土的最大干密度增加1.41% ~ 3.56%,最佳含水量降低0.8% ~ 2.7%;另外,在养护3、7、14 d期间,垃圾稳定土的自由抗压强度值由47.76%提高到388.89%。在利用废物和当地含量潜力的基础上,利用疏浚的土壤和垃圾作为稳定剂可以作为土壤改善工作的另一种选择。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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