利用饱和度和塑性指数控制热带土壤压实

IF 0.9 Q3 ENGINEERING, MULTIDISCIPLINARY
Hasbullah Nawir, Laras Dipa Pramudita, Tita Kartika Dewi, Dayu Apoji, Sugeng Krisnanto
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引用次数: 0

摘要

田地中的土壤压实通常使用最大干密度(ρd)max和最佳含水量(w)opt作为目标属性来控制。然而,由于压实能量水平(CEL)和土壤类型的变化,实现这些目标特性的精确控制可能是困难的。近年来,人们提出了一种以最佳饱和度(Sr)opt为目标特性的土壤压实控制方法。认为(Sr)opt值对CEL和土壤类型的变化不敏感,具有较好的压实控制性能。本文介绍了在印度尼西亚的几个地点的热带土壤的压实特性的调查基于原始和二次资料。研究了(i)干密度(ρd)与Sr、(ii) ρd与塑性指数(PI)、(iii) ρd与CBR、(iv) ρd与渗透率之间的关系。研究表明,土壤的(Sr)选择性为91.2%,变化范围在81.2% ~ 96.5%之间。该研究还表明,在给定的CEL下,(ρd)max与PI相关。期望所提出的关系可以为印度尼西亚的现场压实控制实践提供更好的参考。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Compaction Control Using Degree of Saturation and Plasticity Index on Tropical Soil
Soil compaction in the field is conventionally controlled using maximum dry density, (ρd)max, and optimum moisture content, (w)opt, as the target properties. However, achieving accurate control of these target properties can be difficult due to variation of compaction energy level (CEL) and soil type. Recently, a novel soil compaction control approach using optimum degree of saturation, (Sr)opt, as the target properties has been proposed. It was argued that (Sr)opt can be a better compaction control property as the value is less sensitive to the variation of CEL and soil type. This paper presents an investigation of the compaction characteristics of tropical soils from several locations in Indonesia based on both primary and secondary data. This study was performed by exploring the relationships between (i) dry density (ρd) and Sr, (ii) (ρd) and plasticity index (PI), (iii) (ρd) and CBR, as well as (iv) (ρd) and permeability. This study showed that the (Sr)opt of the soils was 91.2%, with variation between 81.2% and 96.5%. This study also showed that (ρd)max can be related to PI at a given CEL. It is expected that the proposed relationships can be better references for field compaction control practices in Indonesia.
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来源期刊
Journal of Engineering and Technological Sciences
Journal of Engineering and Technological Sciences ENGINEERING, MULTIDISCIPLINARY-
CiteScore
2.30
自引率
11.10%
发文量
77
审稿时长
24 weeks
期刊介绍: Journal of Engineering and Technological Sciences welcomes full research articles in the area of Engineering Sciences from the following subject areas: Aerospace Engineering, Biotechnology, Chemical Engineering, Civil Engineering, Electrical Engineering, Engineering Physics, Environmental Engineering, Industrial Engineering, Information Engineering, Mechanical Engineering, Material Science and Engineering, Manufacturing Processes, Microelectronics, Mining Engineering, Petroleum Engineering, and other application of physical, biological, chemical and mathematical sciences in engineering. Authors are invited to submit articles that have not been published previously and are not under consideration elsewhere.
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