Strength Characteristics and Stability Analysis of Ground Granulated Blast Furnace Slag (GGBFS) Stabilized Coal Mine Overburden-Pond Ash Mix

Rajak, Tarun Kumar; Yadu, Laxmikant; Chouksey, Sandeep Kumar

doi:10.1007/s10706-019-01056-z

Cited by 13 publications

(3 citation statements)

References 40 publications

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“…Figure 5 shows that increasing the GGBS concentration and curing durations in the pond ash-soil mix results in a substantial improvement in the bearing ratio value. It might be due to pozzolanic activity between GGBS and pond ash-soil mix, which serves to improve material strength through the development of cemented matrix [8], [22]. The soil's bearing ratio value improved from 4.30% (SP1) to 27.55% (SP9) after 28 days of curing with the addition of 15% pond ash and 15% GGBS.…”

Section: Bearing Ratio Characteristicsmentioning

confidence: 99%

“…Adequate characteristics of pond ash such as low specific gravity, non-plastic nature, high frictional resistance, and good drainage characteristics etc., makes it suitable for the geotechnical field and soil stabilizations [1][2][3][4]. Incorporation of pond ash as an embankment material are also reported in various literatures [5][6][7][8][9]. Blast furnace slag, a by-product of other industries, is mass-produced during the pig iron manufacturing process.…”

Section: Introductionmentioning

confidence: 99%

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Effect of GGBS on Strength Characteristics and Stability of Pond Ash Mixed Soil Embankment

Rajak¹,

Mishra²,

Yadu

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The increased usage of coal by thermal power plants results in enormous volumes of pond ash. Ground Granulated Blast Furnace Slag (GGBS) is produced in huge quantity in iron industries and is mostly utilised in the cement industry. Despite the fact that these industrial by-products have a wide range of applications, it is still conceivable to investigate the alternate mode for batch usage. The present study explores the effectiveness of GGBS in modifying the strength characteristics of a soil-pond ash mix. Pond ash was mixed with soil at 10%, 15%, 20%, and 25%, and strength behaviour were determined by analysing compaction characteristics, Unconfined Compressive Strength (UCS), bearing ratio behaviour, and shear strength parameters. The effect of GGBS addition in various amounts on the strength properties of pond ash-soil mix was also observed at various curing periods. Stability analysis was also conducted using limit equilibrium based GEOSLOPE software to evaluate the Factor of Safety (F) and stability of stabilized soil embankment. It was found from the test results that the addition of GGBS to the pond ash-soil mix improved the strength behaviours. With the inclusion of GGBS, the curing period was extended, which resulted in a substantial improvement in strength properties. Substantial improvement in factor of safety and stability of embankment was also observed by adding GGBS in pond ash-soil mix. Outcome of present study demonstrates an alternative approach for effective and safe utilization of GGBS and pond ash at optimum proportions.

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Section: Bearing Ratio Characteristicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of GGBS on Strength Characteristics and Stability of Pond Ash Mixed Soil Embankment

Rajak¹,

Mishra²,

Yadu

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…Pradhan et al [61] performed the numerical simulation of OB dump with 20% fly ash to optimize the slope angle and suggested that optimum slope of 32° can be accommodated safely for the long-term stability for 60.0 m dump height. Rajak et al [62] has performed the stability analysis for pond ash mixed coal mine OB dump and suggested that pond ash may be safely utilized in the dump with higher stability. Numerical modelling was carried out by Rajak et al [59] and suggested that optimum dump height of 50.0 m and 55.0 m can be suitably adopted for OB dump mixed with 10% fly ash at 35° and 37° slope angle respectively.…”

Section: Integration Of Fly Ash With Ob Dump Materialsmentioning

confidence: 99%

Effect of fly ash on geotechnical properties and stability of coal mine overburden dump: an overview

2020

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The management of overburden (OB) materials needs proper attention to safe mining operations. Several mine OB dump failures have been occurred due to inappropriate geotechnical and geometrical parameters. Increasing consumption of coal in thermal power plant also generates huge amount of ash which adversely affect the environment and its utilization is a great challenge. The present paper reviews the effect of fly ash on the different geotechnical properties and stability of coal mine OB dump material to explore a safe and effective utilization of fly ash. It was found that up to 30% fly ash can potentially modify the compaction characteristics, California bearing ratio value, unconfined compressive strength, and shear strength parameters of OB dump material. Based on the review, it may be suggested that fly ash-OB mix can be effectively utilized in the mine OB dump and for the mine haul road construction thus, provides an alternative mode of fly ash utilization in huge quantity.

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Partial Replacement of Moorum with Fly Ash in Embankment

Turkane

Chouksey

2020

Lecture Notes in Civil Engineering

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Strength Characteristics and Stability Analysis of Ground Granulated Blast Furnace Slag (GGBFS) Stabilized Coal Mine Overburden-Pond Ash Mix

Cited by 13 publications

References 40 publications

Effect of GGBS on Strength Characteristics and Stability of Pond Ash Mixed Soil Embankment

Effect of GGBS on Strength Characteristics and Stability of Pond Ash Mixed Soil Embankment

Effect of fly ash on geotechnical properties and stability of coal mine overburden dump: an overview

Partial Replacement of Moorum with Fly Ash in Embankment

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