Study of Engineering Behavior of Coal Mine Waste Generated From Barapukuria Coal Mine As Road Subgrade

Hossain, Md. Belal; Kumruzzaman, M.; Roknuzzaman, Md.

doi:10.33736/jcest.884.2018

Cited by 3 publications

(9 citation statements)

References 2 publications

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“…The optimum moisture content increases from 7.47% to 14.90% and the maximum dry density decreases from 18.22 kN/m 3 to 12.10 kN/m 3 from Type I to Type IV. The same output is observed during the use of cement with sand [5]. Also Kaniraj and Havanagi [10] described that the decrease in the maximum dry density is imputed to the agglomeration and flocculation of clay particles through cation exchange reaction and also leading to the occupation of a larger space.…”

Section: Index Properties Figure 2 Variation Of Liquid Limit and Plastic Limit With Varying Percentages Of Fly Ashesmentioning

confidence: 53%

“…When the UCS value less than 25 kPa then the quality of subgrade is very low. When the UCS value lies between 50 kPa to 100 kpa then the subgrade is medium and when the UCS value lies 100 to 200 kPa then the subgrade is stiff [5]. The result indicates that fresh coal mine is very soft.…”

Section: Unconfined Compression Strength (Ucs)mentioning

confidence: 95%

“…Moreover, fly ash chemically reacts with the particles of coal mine wastes which effectively changes the soil grain clay size to silt size. If plasticity index is less than 10%, then it can be used as road subgrade [5]. From the [Figure 2] it is found that the plasticity index for 15% of fly ash is 7 and for the other proportion on fly ash it is more than 10.…”

Section: Index Properties Figure 2 Variation Of Liquid Limit and Plastic Limit With Varying Percentages Of Fly Ashesmentioning

confidence: 99%

“…To minimize the environmental impact of mining it requires a well-planned control measure. Most of this waste is disposed on the surface which is inappropriate [5]. Now, it is high time to study the impact of power plant waste and coal mining waste on surrounding environment of Barapukuria and inhabitants [4].…”

Section: Introductionmentioning

confidence: 99%

“…Lime and cement have been used successfully for many decades, and more recently fly ash has been used as an economical alternative to improve subgrade performance [16]. To evaluate the possibility of the coal waste material as a road subgrade, various engineering and mechanical properties of waste are to be investigated so as to ensure desired strength and durability [5].…”

Section: Introductionmentioning

confidence: 99%

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Stabilization of Coal Mine Waste and Its Practical Application as a Road Subgrade

Shirin¹,

Islam²,

Kumruzzaman³

2020

AJTTE

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A developing country like Bangladesh is establishing many power plants where coal is being used as a primary fuel. The generation of coal waste is increasing with the mining of coal, which may cause an adverse environmental effect. So, it is required to be managed in a proper manner, such as reuse and recycle the coal waste. The objective of this study is to investigate the significance of coal waste used as a road subgrade. Due to the lack of some physical and strength properties, the waste cannot be used directly as a subgrade. So, the investigation was done to stabilize the fresh coal waste with different percentages of fly ash such as 0%, 10%, 12% and 15% to justify the suitability of its intended use. It is found that with the increasing percentages of fly ashes, the plasticity index reduces significantly. With the addition of fly ash, the dry density increases, while the optimum moisture content decreases significantly. After analyzing the test result, it is found that coal waste with 15% fly ash having unconfined compressive strength and CBR value is 17.79 psi and 23.12% respectively which is sufficiently significant for use as road subgrade.

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Section: Index Properties Figure 2 Variation Of Liquid Limit and Plastic Limit With Varying Percentages Of Fly Ashesmentioning

confidence: 53%

Section: Unconfined Compression Strength (Ucs)mentioning

confidence: 95%

Section: Index Properties Figure 2 Variation Of Liquid Limit and Plastic Limit With Varying Percentages Of Fly Ashesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Stabilization of Coal Mine Waste and Its Practical Application as a Road Subgrade

Shirin¹,

Islam²,

Kumruzzaman³

2020

AJTTE

View full text Add to dashboard Cite

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Coal mining wastes valorization as raw geomaterials in construction: A review with new perspectives

Nash

Galdo

et al. 2022

Journal of Cleaner Production

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Evaluation of Engineering Properties of Thermal Power Plant Waste for Subgrade Treatment

Hossain¹,

Roknuzzaman²,

Biswas³

et al. 2021

JCEST

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Soft cohesive soils have low strength, high plasticity, and a large expansion ratio making them unsuitable as a road subgrade. This study aims to evaluate the potential of power plant waste (fly ash) from the Barapukuria Thermal Power Plant, Dinajpur, Bangladesh to improve the characteristics of such soft cohesive soil. X-ray fluorescence test conducted to classify the power plant fly ash and the type was identified as “Class F” according to “American Association of State Highway and Transportation Officials” and "American Society for Testing and Materials". Laboratory tests were conducted on clay soil obtained from Dinajpur region modified by the collected power plant waste. As the Class F fly ash has low cementing property, 3% cement was added with it. Cement mixed soil was modified with 5%, 10%, 15%, and 20% fly ash respectively. Specific Gravity, Atterberg limits, Modified Proctor Compaction, Unconfined Compressive Strength (UCS) and California Bearing Ratio (CBR) tests were conducted. The study reveals that there is a decrease in specific gravity, dry density, and plasticity index with the addition of power plant waste. On the other hand, there is an increase in optimum moisture content, UCS, and CBR value. UCS and CBR values were found to be improved remarkably. Soaked CBR value of soil is found to be improved from 2.79% to 92.59% when treated with 5% fly ash and 3% cement. The UCS value of this modified soil was 560.36 kPa. The stabilized soil thus obtained meets the requirements for subgrade as specified by the Local Government Engineering Department (LGED)’s design manual (2005), Bangladesh. Since there is a possibility of leaching by dumping a large quantity of fly ash in the pond, the use of fly ash from the power plants to improve soft cohesive soils for road subgrade may be an environment-friendly alternative to its disposal in the ponds.

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Study of Engineering Behavior of Coal Mine Waste Generated From Barapukuria Coal Mine As Road Subgrade

Cited by 3 publications

References 2 publications

Stabilization of Coal Mine Waste and Its Practical Application as a Road Subgrade

Stabilization of Coal Mine Waste and Its Practical Application as a Road Subgrade

Coal mining wastes valorization as raw geomaterials in construction: A review with new perspectives

Evaluation of Engineering Properties of Thermal Power Plant Waste for Subgrade Treatment

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