Study of coffee husk ash addition for clay soil stabilization

Munirwan, Reza Pahlevi; Sundary, Devi; Munirwansyah,; Bunyamin,

doi:10.1088/1757-899x/1087/1/012016

Cited by 8 publications

(4 citation statements)

References 10 publications

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“…The addition of CHA appears to have lowered the soil's water solubility, resulting in a lower OMC [9]. CHA has also been associated with increases in MDD and a reduction in OMC, according to the previous study [18][19][20].…”

Section: Resultsmentioning

confidence: 99%

The application of coffee husk ash to improve compaction characteristics of clay soil

Munirwan

Taib

Taha

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Soil stabilization is the modification process of one or more soil properties mechanically or chemically to generate an improved soil material with the appropriate engineering properties. Recently, stabilization methods utilizing commonly used stabilizing agents are becoming more costly. On the other hand, there is an increasing interest in identifying new green technologies that may be used to improve construction practices. As a result, the search for new materials and improved processes for processing local materials has moved to a priority. Thus, this study was conducted to validate the effectiveness of coffee husk ash (CHA) as a stabilizing agent on the compaction characteristics of clayey soil. To characterize the properties of clayey soil admixed with varying concentrations of CHA, Atterberg limits, grain size distribution, and standard proctor compaction tests were conducted. The soil was mixed with CHA in concentrations ranging from 5% to 25% by dry weight of the soil. Observation indicates CHA progressively enhances soil compaction performance. The pozzolanic and hydration reactions between CHA and the soil may have made the soil more likely to be compacted.

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Section: Resultsmentioning

confidence: 99%

The application of coffee husk ash to improve compaction characteristics of clay soil

Munirwan

Taib

Taha

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…Bagasse ash [27,29] Calcined termite clay [27] Enset ash [28] Coffee husk ash [15,30,31] Current study CBR (%) crafted the manuscript, and assumed the primary responsibility for the written content. Throughout the experimental process, Dr. Eleyas Assefa and Dr. Siraj Mulugeta provided supervision, guidance, and actively participated in refining and enhancing the manuscript.…”

Section: Soil Propertiesmentioning

confidence: 99%

Effect of Wetting and Drying Cycle on the Behavior of Teff Straw Ash-Stabilized Expansive Soil

Moges,

Assefa,

M. Assefa

2024

Advances in Civil Engineering

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This study explores the impact of wetting and drying cycles on teff straw ash-stabilized expansive soil, with a focus on enhancing its mechanical properties for road subgrade applications. Expansive soil, characterized by continuous swell and shrink behavior, undergoes cyclic testing to establish equilibrium and critical density. The mitigating effects of teff straw ash on soil damage and its influence on expansive soil’s mechanical attributes are investigated. Laboratory results classify natural expansive soil as A-7-5 and CH according to AASHTO and USCS standards, respectively. Using a one-dimensional odometer apparatus, six wetting–drying cycles are conducted on teff straw ash-stabilized expansive soil to observe its behavior at equilibrium. Scanning electron microscopy reveals a disordered bond between soil particles and teff straw ash, intensifying with increased wetting–drying cycles. X-ray diffraction analysis is performed on samples subjected to different curing times, indicating heightened cation exchange and pozzolanic reactions as curing duration increases, thereby reducing soil expansiveness. A 96-hr socked California Bearing Ratio (CBR) test assesses subgrade strength. The CBR values for natural soil fall below the Ethiopian Road Authority (ERA) standards for low-volume roads. In contrast, expansive soil stabilized with teff straw ash at 10%, 15%, and 20% exhibits substantial increases in CBR values (3.7, 6.7, and 8.9, respectively), meeting the ERA standards. This suggests that teff straw ash stabilization renders expansive soil suitable for low-volume road subgrades, aligning with ERA standards. This comprehensive study provides valuable insights into the potential use of teff straw ash as an effective stabilizer for expansive soils, offering sustainable solutions for road construction in regions characterized by expansive soil challenges.

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“…Strengthening work on consolidation problems can be carried out in various ways, namely: first, remove the poor native soil and replace it with another [6][7][8], more stable type of soil. Second, carrying out stabilization, such as using geosynthetic materials for vertical channels and speeding up the process of draining pore water or removing water from the soil pores first using a preloading system [9], then, after the soil is stable, building buildings on it.…”

Section: Introductionmentioning

confidence: 99%

Study comparison of ground subsidence due to preloading installation of egg tray triangular vertical drains with distance variations on a small laboratory scale

Munirwansyah,

Munirwan,

Milasafarah

2024

IOP Conf. Ser.: Earth Environ. Sci.

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The approach to infrastructure development is conducted on soft clay soil, which introduces the threat of consolidation-induced subsidence. The construction soil must possess adequate bearing capacity and shear strength to withstand the loads imposed on it throughout the construction process. Soil with low shear strength necessitates reinforcement to enhance its bearing capacity. This study aims to investigate the effects of preloading on the settlement behavior of soft soil. Applying clay-filled test containers, the laboratory implements the method through a small-scale model approach. As preloading, an embankment load is applied to the soil. The supplementary weight was incrementally increased by 1 kg, 2 kg, 4 kg, 8 kg, and 16 kg for five days. The sample experiments that were conducted were EgVD-0, EgVD S-17, and EgVd S-29. Consolidation was observed in the outcomes of the EgVD S-17 and EgVD s-29 investigations, surpassing EgVD-0 by 53.69% and 57.19%, respectively. EgVD S-17 of 3.56 cm and EgVD S-29 of 3.92 cm were present along with an EgVD-0 decrease of 1.65 cm.

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Study of coffee husk ash addition for clay soil stabilization

Cited by 8 publications

References 10 publications

The application of coffee husk ash to improve compaction characteristics of clay soil

The application of coffee husk ash to improve compaction characteristics of clay soil

Effect of Wetting and Drying Cycle on the Behavior of Teff Straw Ash-Stabilized Expansive Soil

Study comparison of ground subsidence due to preloading installation of egg tray triangular vertical drains with distance variations on a small laboratory scale

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