Sustainable Slope Stabilization Using Biochar and Vegetation Root Reinforcement

Md. Belal Hossaın; Md. Nazmul Islam; Md. Mahabub Rahman; Ashikur Rahman Bhuiyan; Faiaz Ur Rahman; Md. Ayat Islam Roke

doi:10.64808/engineeringperspective.1870732

Sustainable Slope Stabilization Using Biochar and Vegetation Root Reinforcement

Abstract

Slope instability is a significant geotechnical and environmental issue that can lead to erosion, landslides and structural collapse, especially in monsoon affected areas. In this study, the influence of biochar amendment and root reinforcement on soil mechanical behaviour and slope stability was investigated by working with the soils sampled from the erosion-susceptible area in Dinajpur Rubber Dam in northern Bangladesh. Acacia auriculiformis biochar and Napier grass root (Pennisetum purpureum) were applied to the soil at a rate of 5%, 10% and 15% biochar contents combined with a mix of 0.5%, 1% and 2% root content combinations on dry weight basis. Index properties, compaction characteristics, permeability, field density, and direct shear testing in line with ASTM standards formed part of a full laboratory test programme to quantify the impact of treatment. The test results showed that the addition of biochar lowers maximum dry density and increases optimum moisture content. Root treatment greatly improves the shear characteristics parameters and slope stability, and the best effect is that treated with 5-10% biochar and 1-2% root content. In this condition, the factor of safety (FOS) was increased from 1.349 with untreated soil to be 2.294. Biochar at the high addition rate (15%) induced marginal increase for strength, as a result of low level of interparticle bonding and soil–biochar interactions. The results obtained were confirmed by numerical slope stability analysis carried out using the software GeoStudio SLOPE/W, and a much higher factor of safety value was achieved for treated slopes when compared to unsprayed cases. In summary, the joint use of biochar and vegetative root reinforcement is an effective, sustainable, and environmentally friendly method to enhance land mass stability in the erosion-prone region’s collapsing slope.

Keywords

References

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Details

Primary Language

English

Subjects

Civil Geotechnical Engineering

Journal Section

Research Article

Authors

Md. Belal Hossaın
0000-0002-3319-250X
Bangladesh

Md. Nazmul Islam
0009-0001-8540-0040
Bangladesh

Md. Mahabub Rahman ^*
0000-0003-1580-483X
Bangladesh

Ashikur Rahman Bhuiyan
0009-0009-2522-2674
Bangladesh

Faiaz Ur Rahman
0009-0000-1058-3586
Bangladesh

Md. Ayat Islam Roke
0009-0004-5609-6731
Bangladesh

Publication Date

May 16, 2026

Submission Date

January 24, 2026

Acceptance Date

May 14, 2026

Published in Issue

Year 2026 Volume: 6 Number: 3

DOI

https://doi.org/10.64808/engineeringperspective.1870732

IZ

https://izlik.org/JA54YU87TN

Cite

RIS / Bibtex

APA

Hossaın, M. B., Islam, M. N., Rahman, M. M., Rahman Bhuiyan, A., Ur Rahman, F., & Roke, M. A. I. (2026). Sustainable Slope Stabilization Using Biochar and Vegetation Root Reinforcement. Engineering Perspective, 6(3), 374-388. https://doi.org/10.64808/engineeringperspective.1870732

AMA

1.Hossaın MB, Islam MN, Rahman MM, Rahman Bhuiyan A, Ur Rahman F, Roke MAI. Sustainable Slope Stabilization Using Biochar and Vegetation Root Reinforcement. engineeringperspective. 2026;6(3):374-388. doi:10.64808/engineeringperspective.1870732

Chicago

Hossaın, Md. Belal, Md. Nazmul Islam, Md. Mahabub Rahman, Ashikur Rahman Bhuiyan, Faiaz Ur Rahman, and Md. Ayat Islam Roke. 2026. “Sustainable Slope Stabilization Using Biochar and Vegetation Root Reinforcement”. Engineering Perspective 6 (3): 374-88. https://doi.org/10.64808/engineeringperspective.1870732.

EndNote

Hossaın MB, Islam MN, Rahman MM, Rahman Bhuiyan A, Ur Rahman F, Roke MAI (May 1, 2026) Sustainable Slope Stabilization Using Biochar and Vegetation Root Reinforcement. Engineering Perspective 6 3 374–388.

IEEE

[1]M. B. Hossaın, M. N. Islam, M. M. Rahman, A. Rahman Bhuiyan, F. Ur Rahman, and M. A. I. Roke, “Sustainable Slope Stabilization Using Biochar and Vegetation Root Reinforcement”, engineeringperspective, vol. 6, no. 3, pp. 374–388, May 2026, doi: 10.64808/engineeringperspective.1870732.

ISNAD

Hossaın, Md. Belal - Islam, Md. Nazmul - Rahman, Md. Mahabub - Rahman Bhuiyan, Ashikur - Ur Rahman, Faiaz - Roke, Md. Ayat Islam. “Sustainable Slope Stabilization Using Biochar and Vegetation Root Reinforcement”. Engineering Perspective 6/3 (May 1, 2026): 374-388. https://doi.org/10.64808/engineeringperspective.1870732.

JAMA

1.Hossaın MB, Islam MN, Rahman MM, Rahman Bhuiyan A, Ur Rahman F, Roke MAI. Sustainable Slope Stabilization Using Biochar and Vegetation Root Reinforcement. engineeringperspective. 2026;6:374–388.

MLA

Hossaın, Md. Belal, et al. “Sustainable Slope Stabilization Using Biochar and Vegetation Root Reinforcement”. Engineering Perspective, vol. 6, no. 3, May 2026, pp. 374-88, doi:10.64808/engineeringperspective.1870732.

Vancouver

1.Md. Belal Hossaın, Md. Nazmul Islam, Md. Mahabub Rahman, Ashikur Rahman Bhuiyan, Faiaz Ur Rahman, Md. Ayat Islam Roke. Sustainable Slope Stabilization Using Biochar and Vegetation Root Reinforcement. engineeringperspective. 2026 May 1;6(3):374-88. doi:10.64808/engineeringperspective.1870732