文章基本信息

标题：Comparison of fly ash with Lapindo mud as a land stabilizer for landfill in Pasuruan–Indonesia
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作者：Agus Tugas Sudjianto ; Abdul Halim ; Oktiono Gembiranto 等
期刊名称：Eastern-European Journal of Enterprise Technologies
印刷版ISSN：1729-3774
电子版ISSN：1729-4061
出版年度：2021
卷号：3
期号：10
页码：19-26
DOI：10.15587/1729-4061.2021.234518
语种：English
出版社：PC Technology Center
摘要：The paper discusses the comparison of fly ash with Lapindo mud as a land stabilizer for a landfill in Pasuruan, Indonesia. Land for landfills has a low level of stability due to the condition of garbage that has accumulated and undergoes a process of decay. This land condition is less favorable to support the construction of the building above it if one day the location is used for construction. Therefore, it is necessary to stabilize the soil first. The purpose of this study was to determine the effect of adding a mixture of TPA soil with fly ash and Lapindo mud. The method used by sieve testing and compaction of the specimens for each treatment consisted of a mixture of TPA soil with fly ash and TPA soil with Lapindo mud, while the percentages of fly ash and Lapindo mud to the dry weight of the original soil were respectively 0?%, 10?%, 15?%, and 20?%. The results showed that stabilization of the landfill with fly ash reduced the silt content while stabilization with Lapindo mud increased the levels of silt in the landfill so that fly ash was better than Lapindo mud for stabilization of the landfill. The specific gravity values for both stabilization mixtures increased equally. Based on the results of the standard compaction test for the addition of a mixture of fly ash, the OMC value decreases and the greater the value of dmaxs indicates that fly ash is good for landfill stabilization, while the addition of a mixture of Lapindo mud increases the OMC the smaller the value of dmaxs. For the direct shear test of the two mixed soils, the value of the internal friction angle (?) increased. The percentage value of the optimum mixture of mixed soil+fly ash is 14?% with an internal shear angle (?) of 38°, while the stabilization of landfill with Lapindo mud obtained the optimum mixture percentage value of 11?% with an internal shear angle (?) of 31°.
关键词：landfill;soil stability;fly ash;Lapindo mud;sieve testing;compaction;silt;specific gravity;direct shear test;internal shear angle