Currently working as Asst. Professor in NIT Warangal
EDUCATION
PhD in Civil Engineering
RESEARCH, TEACHING, or OTHER INTERESTS
Computational Mechanics, Geotechnical Engineering and Engineering Geology, Earth-Surface Processes, Building and Construction
30
Scopus Publications
369
Scholar Citations
12
Scholar h-index
14
Scholar i10-index
Scopus Publications
Red mud stabilization using alternate industrial waste materials- mechanical and microstructural properties N. Murali Mohan, Venkata Ramana Gondu, Sudheer Kumar Yamsani, Ramana Murty Varudu Journal of Environmental Management, 2025 Red mud (RM) is a potentially toxic industrial waste material generated from aluminum processing industries that usually be stored in open ponds. Occasionally spilling of RM to the surrounding areas has been reported either by overflow or due to dyke breach causing severe environmental concerns. Stabilization of RM is considered as an effective means to enhance its utilization as a geotechnical material. Hence, several researchers have attempted to stabilize RM using cement, fly ash (FA), gypsum, and ground granulated blast furnace slag (GGBS) for pavement applications. Though cement stabilization and geopolymer stabilization could result in satisfactory strength requirement (unconfined compressive strength (UCS) more than 10 kg/cm 2 and California bearing ratio (CBR) more than 10 %), the durability aspects were not supplemented by many researchers. Considering the high carbon footprint of cement stabilization and the similar impact of sodium silicate use in geopolymer stabilization, in the present study an attempt is made to evaluate the influence of lime, FA, and GGBS individually and in combination on the strength and durability aspects of RM. From this study, it is revealed that for 3 %–10 % cement addition, the UCS values obtained for RM mixes for 7 days curing period were 0.8 MPa–6 MPa. The durability aspects were also satisfied for these mixes. Whilst for 5 %–30 % lime stabilization, the UCS values ranged from 0.30 MPa–1.67 MPa at 7 days curing period and 0.65 MPa–3.6 MPa at 28 days curing period respectively. However, the durability aspects were not satisfied for lime stabilized RM samples. Further when FA is used along with lime, the UCS values ranged from 2.98 MPa–5.32 MPa at 7 days curing period and 4.56 MPa–6.62 MPa values at 28 days curing period respectively. For these stabilized RM mixes, the durability was satisfied up to 30 % FA for 20 % Lime addition; beyond which the durability aspects could not be satisfied. The lime-GGBS combinations could impart the UCS values of 5.79 MPa–9.83 MPa for GGBS content of 10 %–40 % and Lime content of 10 %–20 % while satisfying the durability aspects. The UCS values for various stabilized mix proportions as above could satisfy the suggested range of 4.5–7.0 MPa for subbase and base courses of pavements as per Indian Roads Congress (IRC): 37–2018. At higher GGBS and lime additions, the mix of RMGGBSL (503020) resulted in the UCS strength of more than 8 MPa making it even suitable for higher end roads. However, keeping in view, the mixing difficulties of admixtures with such a finer RM, the stabilized materials may be restricted to low volume road construction.
Seepage and Leaching Characteristics of Black-Cotton Soils Stabilized Using Calcinated Coal Gangue-Based Geopolymers Lunavath Reddy, Gaddam Aravind Goud, Sudheer Kumar Yamsani, Gondu Venkata Ramana Journal of Environmental Engineering United States, 2025 Sustainable improvement of black-cotton soil (BCS) properties is essential for effective engineering applications. Researchers identified the use of an industrial by-product coal gangue (CG) to improve the engineering behavior of poor soils such as BCS. Nevertheless, as CG is industrial waste, the excessive leachate seepage from it could cause environmental pollution during this process. To overcome this limitation, in this study geopolymerization is adopted to encapsulate the heavy metals in CG and reduce seepage. Further research suggests that the calcination of CG [forming calcinated coal gangue (CCG)] could enhance the geopolymerization. Accordingly, the seepage and leaching behavior of BCS stabilized with CG, CCG, and geopolymerized CCG were evaluated using leaching column tests (LCTs). The obtained leachate is tested using inductively coupled plasma optical emission spectroscopy to determine the concentration of heavy metal. The results indicate that BCS with CG immobilizes silver (Ag) alone at a concentration of 0.029524 mg/l. Meanwhile BCS with CCG has additionally encapsulated barium (Ba) at 0.00294 mg/l, cadmium (Cd) at 0.000264 mg/l, cobalt (Co) at 0.003577 mg/l, chromium (Cr) at 0.00463 mg/l, and iron (Fe) at 0.207092 mg/l. However, for other heavy metals, BCS with CCG has not been found to satisfy the recommended safety standards. Finally, BCS with CCG-geopolymer has also effectively encapsulated boron (B) at 0.114086 mg/l, manganese (Mn) at 0.005576 mg/l, strontium (Sr) at 0.019769 mg/l, and thallium (Tl) at 0.00033 mg/l. Importantly, heavy metal concentrations in leachate from BCS with CCG-geopolymer remain below all standards (USEPA, WHO, BIS). Therefore, stabilizing BCS with CCG-geopolymer offers a promising solution for encapsulating heavy metal concentrations, surpassing the effectiveness of BCS stabilized with CG and CCG.
Mechanical Behavior of Mine Overburden Soil Stabilized Using Calcium-Based Stabilizer Used for Pavement Application Venkata Ramana Gondu, Paidi Priyanka, Radhakrishnan Vishnu, Sudheer Kumar Yamsani Journal of Structural Design and Construction Practice, 2025 Mine overburden material (OBM) is the discarded soil–rock mixture, which is abundantly dumped around coal mines. These dumps create a lot of instability and environmental issues. The present study attempts to sustainably utilize the mine OBM in the construction of mine haul roads. Mine OBM is generally a soil–rock mixture with differently graded materials lacking the specific requirements for use in pavement subgrade. To utilize the OBM, stabilizers like lime and cement alone may not work due to the heterogeneity of the OBM. Hence, Road Building International (RBI) grade 81, a novel calcium-based stabilizer was used in this study to increase the mechanical properties of the soils, as it can stabilize various ranges of soils. The collected soils were silty sand (SM), intermediate compressible clay (CI), and clayey sand (SC), which possessed different plasticity characteristics. To assess the strength properties of modified mixtures, the California bearing ratio (CBR) and unconfined compressive strength (UCS) tests were conducted along with rutting resistance at different curing periods. The study shows that increasing RBI content enhances the soaked CBR values, with a peak of 135% for stabilized mixtures (SM) soil stabilized with 4% RBI. While the UCS values rose 16 to 18 times, reaching 1,355 kPa for intermediate compressive clay (CI) soil with 4% RBI. Wheel tracking tests demonstrated a 5 to 30-fold reduction in rut depth, dropping below 1.5 mm at 520 kPa stress, even at lower RBI levels for all composite mixtures. The use of RBI has proven to be effective in increasing the subgrade performance for all types of soils in OBM, while for CI soils it is more effective.
Urbanization Challenges in Emerging Economies Urbanization Challenges in Emerging Economies Energy and Water Infrastructure Transportation Infrastructure and Planning and Financing Selected Papers from the ASCE India Conference 2017, 2017
Holistic Approaches of Coal Gangue M Dangi, G Amulya, SK Yamsani Proceedings of the Indian Geotechnical Conference (IGC 2024), Volume 4: Geo … , 2025 2025
Ground Modification Near Waddepally Lake, Warangal KM Pavan, AG Gaddam, VB Chandrareddy, SK Yamsani Ground Improvement I: Proceedings of the Indian Geotechnical Conference 2023, 33 , 2025 2025
Plasticity and Compaction A Bind, SK Gudla Amulya, SK Yamsani Ground Improvement I: Proceedings of the Indian Geotechnical Conference 2023 … , 2025 2025
Red mud stabilization using alternate industrial waste materials-mechanical and microstructural properties NM Mohan, VR Gondu, SK Yamsani, RM Varudu Journal of Environmental Management 391, 126511 , 2025 2025 Citations: 9
Seepage and Leaching Characteristics of Black-Cotton Soils Stabilized Using Calcinated Coal Gangue–Based Geopolymers L Reddy, GA Goud, SK Yamsani, GV Ramana Journal of Environmental Engineering 151 (8), 04025045 , 2025 2025 Citations: 3
Stabilisation of coal-mine overburden dumps using geogrid reinforcements P Vysyaraju, VR Gondu, SK Yamsani Indian Geotechnical Journal, 1-8 , 2025 2025 Citations: 1
Effective utilization of coal gangue for stabilizing black cotton soil: geotechnical performance and microstructural insights AG Gaddam, G Amulya, A Bind, SK Yamsani Transportation Infrastructure Geotechnology 12 (3), 104 , 2025 2025 Citations: 4
Holistic Approaches of Coal Gangue Activation—A Technical Review M Dangi, G Amulya, SK Yamsani Indian Geotechnical Conference, 119-131 , 2024 2024
Chemical Characteristics of Coal Gangue Stabilized Black Cotton Soil L Reddy, AG Gaddam, SK Yamsani Indian Geotechnical Conference, 197-209 , 2024 2024
Equivalent-Linear and Nonlinear Seismic Ground Response Analysis of Important Sites in Amaravati Capital Region, Andhra Pradesh, India R Satyannarayana, GR Bande, SK Yamsani Geotechnical Engineering Journal of the SEAGS & AGSSEA 55 (1), 50-64 , 2024 2024
Efficacy of coal gangue as a precursor in synthesis of geopolymer AG Gaddam, G Amulya, SK Yamsani, VR Gondu Indian Geotechnical Journal 54 (3), 1043-1055 , 2024 2024 Citations: 11
Comprehensive utilization of brick waste as a precursor in synthesizing geopolymer for treating black cotton soil AG Gaddam, VR Gondu, SK Yamsani, VK Adigopula International Journal of Geotechnical Engineering 18 (4), 360-366 , 2024 2024 Citations: 19
Performance evaluation of coal gangue-GGBS–based geopolymer for treating black cotton soil A Gaddam, SK Yamsani Geotechnical Testing Journal 47 (1), 275-293 , 2024 2024 Citations: 15
Enhanced criterion for selecting surface soils for multi-layered cover system CB Gupt, SK Yamsani, J Shaikh, S Sekharan, RR Rakesh Geotechnical and Geological Engineering 42 (1), 807-815 , 2024 2024 Citations: 2
Evaluating the Suitability of Prefabricated Vertical Drains for Soft Ground Modification Near Waddepally Lake, Warangal KM Pavan, AG Gaddam, V Bhaskara Chandrareddy, SK Yamsani Indian Geotechnical Conference, 33-43 , 2023 2023
Plasticity and Compaction Characteristics of Black Cotton Soil Treated with Coal Gangue A Bind, G Amulya, S Kumar, SK Yamsani Indian Geotechnical Conference, 277-284 , 2023 2023
A novel approach for mobile kentledge loading in plate load tests on coal mine-over burden dumps P Vysyaraju, M Gedela, VR Gondu, SK Yamsani, SR Bandla Materials Today: Proceedings , 2023 2023
Pattern on the Stability of a Typical Northeastern Slope S Shruthija, SK Yamsani Earth Retaining Structures and Stability Analysis: Proceedings of the Indian … , 2023 2023
Fly ash and GGBS based geopolymer as alternate binder for treating soft soils AG Gaddam, RM Varudu, SK Yamsani National conference on Advances in Construction Materials and Management … , 2022 2022 Citations: 2
Hydraulic performance assessment of a multi-layered landfill cover system under constant water ponding J Shaikh, SK Yamsani, S Sahoo, S Sekharan, RR Rakesh 2022
MOST CITED SCHOLAR PUBLICATIONS
Study on the efficacy of harmful weed species Eicchornia crassipes for soil reinforcement S Bordoloi, SK Yamsani, A Garg, S Sreedeep, S Borah Ecological Engineering 85, 218-222 , 2015 2015 Citations: 51
Long-term hydraulic performance of landfill cover system in extreme humid region: Field monitoring and numerical approach J Shaikh, S Bordoloi, SK Yamsani, S Sekharan, RR Rakesh, AK Sarmah Science of the total environment 688, 409-423 , 2019 2019 Citations: 42
Appropriate liquid-to-solid ratio for sorption studies of bentonite CB Gupt, SK Yamsani, A Prakash, CR Medhi, S Sreedeep Journal of Environmental Engineering 145 (2), 04018138 , 2019 2019 Citations: 31
Evaluation of infiltrometers and permeameters for measuring hydraulic conductivity B Ghosh, S Pekkat, SK Yamsani Advances in Civil Engineering Materials 8 (1), 308-321 , 2019 2019 Citations: 23
Seepage characteristics of three-layered landfill cover system constituting fly-ash under extreme ponding condition J Shaikh, S Bordoloi, AK Leung, SK Yamsani, S Sekharan, RR Rakesh Science of the Total Environment 758, 143683 , 2021 2021 Citations: 20
Critical assessment of infiltration measurements for soils with varying fine content using a mini disk infiltrometer S Bordoloi, SK Yamsani, A Garg, S Sekharan Journal of Testing and Evaluation 47 (2), 868-888 , 2019 2019 Citations: 20
Comprehensive utilization of brick waste as a precursor in synthesizing geopolymer for treating black cotton soil AG Gaddam, VR Gondu, SK Yamsani, VK Adigopula International Journal of Geotechnical Engineering 18 (4), 360-366 , 2024 2024 Citations: 19
Performance evaluation of 5TM sensor for real-time monitoring of volumetric water content in landfill cover system J Shaikh, SK Yamsani, S Sekharan, RR Rakesh Advances in Civil Engineering Materials 8 (1), 322-335 , 2019 2019 Citations: 19
Frictional and interface frictional characteristics of multi-layer cover system materials and its impact on overall stability SK Yamsani, S Sreedeep, RR Rakesh International Journal of Geosynthetics and Ground Engineering 2 (3), 23 , 2016 2016 Citations: 19
Performance evaluation of coal gangue-GGBS–based geopolymer for treating black cotton soil A Gaddam, SK Yamsani Geotechnical Testing Journal 47 (1), 275-293 , 2024 2024 Citations: 15
Determination of soil erosion index for surface soils of landfill covers YS Kumar, S Kumar, S Sekharan, RR Ranjan Environmental Geotechnics 6 (6), 373-380 , 2019 2019 Citations: 15
Performance evaluation of profile probe for continuous monitoring of volumetric water content in multilayered cover system J Shaikh, SK Yamsani, S Sekharan, RR Rakesh Journal of Environmental Engineering 144 (9), 04018078 , 2018 2018 Citations: 14
Efficacy of coal gangue as a precursor in synthesis of geopolymer AG Gaddam, G Amulya, SK Yamsani, VR Gondu Indian Geotechnical Journal 54 (3), 1043-1055 , 2024 2024 Citations: 11
Impact assessment of vegetation growth on soil erosion of a landfill cover surface J Shaikh, SK Yamsani, MJ Bora, S Sekharan, RR Rakesh, A Mungale, ... Acta Horticulturae et Regiotecturae 22 (2), 75-79 , 2019 2019 Citations: 10
Red mud stabilization using alternate industrial waste materials-mechanical and microstructural properties NM Mohan, VR Gondu, SK Yamsani, RM Varudu Journal of Environmental Management 391, 126511 , 2025 2025 Citations: 9
Vulnerable interface diagram for translational stability analysis of multilayered cover system SK Yamsani, A Dey, S Sekharan, RR Rakesh International Journal of Geomechanics 19 (12), 04019130 , 2019 2019 Citations: 7
Influence of infiltration on soil erosion in green infrastructures J Shaikh, SK Yamsani, MJ Bora, S Sahoo, S Sekharan, RR Rakesh Acta Horticulturae et Regiotecturae 24 (1), 1-8 , 2021 2021 Citations: 6
Effect of soil plasticity and presence of fine particles on SWCC S Abhisekh, SK Yamsani, S Sreedeep Indian Geotechnical Conference (IGC), 1-5 , 2016 2016 Citations: 6
Long-term permeability characteristics of soil-geosynthetic combination used in landfill covers Y Gapak, SK Yamsani, S Sreedeep, RR Rakesh Advances in Civil Engineering Materials 6 (1), 296-309 , 2017 2017 Citations: 5
Effective utilization of coal gangue for stabilizing black cotton soil: geotechnical performance and microstructural insights AG Gaddam, G Amulya, A Bind, SK Yamsani Transportation Infrastructure Geotechnology 12 (3), 104 , 2025 2025 Citations: 4