Seismic performance of force-based designed regular and irregular model buildings Suvro Saha, Tanjilul Haque, Reaz Ahmed Sagor, Debasish Sen World Journal of Engineering, 2026 Purpose The purpose of this study is to investigate the seismic performance of reinforced concrete (RC) irregular building models that have been designed by force-based approach according to the Bangladesh National Building Code (BNBC, 2020). Design/methodology/approach To be in line of the objective, regular and irregular model buildings, having vertical geometric and re-entrant corner irregularities, were developed in ETABS 2017. The irregularities in model buildings were considered using the criteria for irregularity according to the BNBC, 2020. In addition, the buildings were designed in accordance with guidelines provided by the BNBC (2020) and were analyzed using nonlinear static method. Findings The analysis revealed that irregular buildings demonstrate reduced lateral capacity and increased vulnerability compared to regular buildings (RBs). Especially, vertical geometric irregular building was found to have experienced the most significant damage at performance point of nonlinear static analysis. Originality/value The application of force-based approach in designing irregular structures can have some limitation due to the complexity of their irregular configuration. Therefore, it is crucial to assess the seismic performance and behavior of force-based designed (FBD) irregular building. Several studies investigated the seismic performance of irregular buildings, primarily focusing on the effects of irregularity on the seismic performance of representative RC frames. However, there is a lacking in study on the seismic performance of FBD RC buildings with vertical geometric and re-entrant corner irregularities, which highlights the necessity for further investigation. This study may help practicing engineers in this regard.
A COMPARATIVE ANALYSIS OF RECYCLED AND VIRGIN MATERIALS FOR SUBBASE MIX DESIGNS Md Jahidul Islam, Md Yusuf Ali, Debasish Sen, Md Tawseef Hossain Asean Engineering Journal, 2025 This study explores the feasibility and benefits of using a mix of 70% concrete broken chips and 30% salvage materials for subbase construction in Bangladesh, offering an innovative alternative to exclusively using virgin resources. Key findings include the salvage materials mix-design achieving lower Los Angeles Abrasion values and higher California Bearing Ratio than virgin materials, indicating superior durability and strength. Additionally, optimal compaction characteristics were observed, with higher maximum dry density and lower optimum moisture content, contributing to environmental sustainability through reduced water consumption. The mix-design's compliance with required gradation standards post-compaction and favorable pavement performance in terms of vertical displacement and shear stress, as per KENPAVE simulations, further validates its effectiveness. This research underscores the potential of incorporating salvaged materials in pavement construction, aligning with sustainable development goals and demonstrating cost-efficiency and reduced landfill usage, while maintaining industry standards.
A numerical study on predicting bond-slip relationship of reinforced concrete using surface based cohesive behavior Minhajul Bari Prince Minhajul Bari Prince, Debasish Sen Debasish Sen Frattura Ed Integrita Strutturale, 2024 Overall structural integrity and load transfer between concrete and reinforcement enabling composite action relies on the bond between concrete and reinforcement. Bond strength determination of reinforced concrete is an essential task that a pullout test can determine. Experimental pullout behaviour can be affected by various parameters, such as concrete and steel strength, boundary conditions, etc. Therefore, a parametric study on pullout tests is time-consuming. In addition, measurements of internal stress-strain components and damages of constitutive materials are also difficult in experimental endeavours. In this context, finite element (FE) models should be developed to perform a parametric study with cost and time-saving. This study proposes a finite element modeling strategy of reinforced concrete under pullout force by using the expected failure mechanism to predict bond-slip behaviour in ABAQUS. In FE models, surface-to-surface cohesive interaction behaviour was used to assign interaction between reinforcement and concrete. The proposed modelling strategy was validated with available experimental data from four reference specimens, having all possible failures (i.e., pullout, splitting, and splitting-pullout) under pullout loading. The finite element analysis showed that the proposed FE modeling strategy performed well in predicting bond-slip behaviour in elastic regions. Additionally, maximum bond stresses were predicted satisfactorily, except for the splitting failure pattern, using the proposed FE modelling strategy.
Flexural and Shear Strengthening of Reinforced-Concrete Beams with Ultra-High-Performance Concrete (UHPC) Farabi Bin Ahmed, Rajib Kumar Biswas, Debasish Sen, Sumaiya Tasnim Construction Materials, 2024 Ultra-high-performance concrete (UHPC) is considered to be a promising material for the strengthening of damaged reinforced concrete (RC) members due to its high mechanical strength and low permeability. However, its high material cost, limited code provisions, and scattered material properties limit its wide application. There is a great need to review existing articles and create a database to assist different technical committees for future code provisions on UHPC. This study presents a comprehensive overview focusing on the effect of the UHPC layer on the flexural and shear strengthening of RC beams. From this review, it was evident that (1) different retrofitting configurations have a remarkable effect on the cracking moment compared to the maximum moment in the case of flexural strengthening; (2) the ratios of the shear span and UHPC layer thickness have a notable effect on shear strengthening and the failure mode; and (3) different bonding techniques have insignificant effects on shear strengthening but a positive impact on flexural strengthening. Overall, it can be concluded that three-side strengthening has a higher increment range for flexural (maximum, 81%–120%; cracking, 300%–500%) and shear (maximum, 51%–80%; cracking, 121%–180%) strengthening. From this literature review, an experimental database was established, and different failure modes were identified. Finally, this research highlights current issues with UHPC and recommends some future works.
SIMULATION OF LATERAL BEHAVIOUR OF UN-STRENGTHENED AND FERROCEMENT STRENGTHENED MASONRY INFILLED RC FRAME World Conference on Earthquake Engineering Proceedings, 2024
Advantages and limitations of retrofitting masonry infilled RC Frames by Ferro-cement based on experimental observations World Conference on Earthquake Engineering Proceedings, 2021
FE MACRO MODELING FOR IN-PLANE RESPONSES OF MASONRY INFILLED RC FRAME AND COMPARISON WITH EXPERIMENT World Conference on Earthquake Engineering Proceedings, 2021
EXPERIMENTAL INVESTIGATION AND CAPACITY EVALUATION OF FERRO-CEMENT LAMINATED MASONRY INFILLED RC FRAME World Conference on Earthquake Engineering Proceedings, 2021
EXPERIMETAL STUDY ON FERRO-CEMENT RETROFIT FOR RC FRAME WITH INFILLED BRICK MASONRY WALL World Conference on Earthquake Engineering Proceedings, 2021
REVIEW ON THE EFFECT OF OPENINGS ON THE SEISMIC RESPONSE OF WALL PANELS World Conference on Earthquake Engineering Proceedings, 2021
VISUAL RATING METHOD AND PRIORITY SETTING OF DETAILED EVALUATION OF EXISTING RC BUILDINGS WITH MASONRY INFILL World Conference on Earthquake Engineering Proceedings, 2021
IN-PLANE SEISMIC PERFORMANCE OF MASONRY INFILLED RC FRAME WITH AND WITHOUT FERRO-CEMENT OVERLAY World Conference on Earthquake Engineering Proceedings, 2021
A comparative study of steel angles and strips strengthened rc columns Asian Journal of Civil Engineering, 2017
RECENT SCHOLAR PUBLICATIONS
Experimental investigation on the effect of high range water reducing admixture on mechanical and microstructural properties of jute fiber reinforced concrete F Patowary, T Islam, D Sen, SR Chowdhury Innovative Infrastructure Solutions 11 , 2026 2026
Effect of parent concrete’s properties on compressive strength of recycled aggregate concrete AA Rafi, MF Momin, D Sen, AI Chowdhury Journal of Building Pathology and Rehabilitation 11, 1-17 , 2026 2026
A comparative analysis of recycled and virgin materials for subbase mix designs MJ Islam, MY Ali, D Sen, MT Hossain ASEAN Engineering Journal 15 (2), 191-199 , 2025 2025
Effect of Ferro-cement Confinement on Compressive and Splitting Tensile Behavior of Plain Concrete A Al-Rafi, T Islam, KR Ibtesham, D Sen Civil Engineering Infrastructures Journal 58 (1) , 2025 2025
Seismic Capacity Assessment of Reinforced Concrete Buildings in the 2023 Turkey Earthquake: Relation of Base Shear Strength Coefficients and RC Wall Area Ratios to Damage and … H Alwashali, SEN Debasish, J MONICAL 2025
Numerical investigation on masonry panel under diagonal compression KM Huda, NJ Rite, MA Chowdhury, D Sen Discover Concrete and Cement 1 , 2025 2025 Citations: 1
Seismic performance of force-based designed regular and irregular model buildings S Saha, T Haque, RA Sagor, D Sen World Journal of Enginnering , 2025 2025
CNCRP Manual Based Seismic Evaluation and Retrofitting of Existing RC Buildings: A Case Study D Sen, MK Shihab, MF Momin Journal of Rehabilitation in Civil Engineering 13 (1), 187-204 , 2025 2025
Effect of Jute Fiber Content on Compressive and Split Tensile Strength of Concrete Utilizing Stone Chips as Coarse Aggregates T Islam, F Patowary, D Sen, SR Chowdhury Civil Engineering and Architecture 13 (3), 1995-2005 , 2025 2025
Preliminary and detailed seismic evaluation of an existing RC building in Bangladesh: a case study MF Momin, MW Islam, FB Masud, N Naomi, D Sen Innovative Infrastructure Solutions 9 (10) , 2024 2024 Citations: 3
Simulation of Lateral Behaviour of Un-strengthened and Ferrocement Strengthened Masonry Infilled RC Frame D Sen, M Hassan, A Dutu, M Seki, M Maeda 18th World Conference of Earthquake Engineering (WCEE), Milan, Italy. , 2024 2024 Citations: 1
Assessment of Medical Waste Mangement Practices in Bangladesh with Emphasizing Effective Recycling Initiatives T Siddika, MMS Rafi, PP Saha, D Sen, SD Nishu Journal of Environmental Engineering and its Scope 7 (2), 59-89 , 2024 2024
A comparative investigation on experimental lateral behaviour of bare RC frame, non-strengthened and ferrocement strengthened masonry infilled RC frame D Sen, FT Zahura, A Das, H Alwashali, MS Islam, M Maeda, M Seki, ... Bulletin of the New Zealand Society for Earthquake Engineering 57 (2), 85-96 , 2024 2024 Citations: 4
Flexural and shear strengthening of reinforced-concrete beams with ultra-high-performance concrete (UHPC) FB Ahmed, RK Biswas, D Sen, S Tasnim Construction Materials 4 (2), 468-492 , 2024 2024 Citations: 25
A Numerical Study on Predicting Bond-Slip Relationship of Reinforced Concrete using Surface Based Cohesive Behavior MB Prince, D Sen Frattura ed Integrità Strutturale 18 (69), 154-180 , 2024 2024 Citations: 7
Finite element analysis on the effect of gap between masonry infill and reinforced concrete frame under inplane loading MM Islam, D Sen, SR Chowdhury Civil Engineering Infrastructures Journal (CEIJ) , 2024 2024 Citations: 1
Numerical investigation on the effect of infill masonry on lateral behaviour of surrounding RC frame MM Islam, D Sen, SR Chowdhury Asian Journal of Civil Engineering 24 (8), 2851-2862 , 2023 2023 Citations: 12
Experimental Investigation on the Behavior of Steel Angle and Strip Jacketed RC Column Under Eccentric Loading D Sen, M Begum Journal of The Institution of Engineers (India) Series A , 2023 2023 Citations: 3
Lateral strength evaluation of ferrocement strengthened masonry infilled RC frame based on experimentally observed failure mechanisms D Sen, H Alwashali, MS Islam, M Seki, M Maeda Structures 58 , 2023 2023 Citations: 11
Comparison of lateral behavior of an existing RC building under nonlinear static and incremental dynamic loads MB Prince, MNI Mollah, MRA Chowdhury, D Sen Asian Journal of Civil Engineering 24 (7), 2155-2164 , 2023 2023 Citations: 2
MOST CITED SCHOLAR PUBLICATIONS
Effects of steel fiber percentage and aspect ratios on fresh and harden properties of ultra-high performance fiber reinforced concrete RK Biswas, F Bin Ahmed, ME Haque, AA Provasha, Z Hasan, F Hayat, ... Applied mechanics 2 (3), 501-515 , 2021 2021 Citations: 68
Experimental investigation of influences of several parameters on seismic capacity of masonry infilled reinforced concrete frame H Alwashali, D Sen, K Jin, M Maeda Engineering Structures 189, 11-24 , 2019 2019 Citations: 61
Flexural and shear strengthening of reinforced-concrete beams with ultra-high-performance concrete (UHPC) FB Ahmed, RK Biswas, D Sen, S Tasnim Construction Materials 4 (2), 468-492 , 2024 2024 Citations: 25
Response of multi-storey regular and irregular buildings of identical weight under static and dynamic loading in context of Bangladesh MR Kabir, D Sen, MM Islam INTERNATIONAL JOURNAL OF CIVIL AND STRUCTURAL ENGINEERING 5 (3), 252-260 , 2015 2015 Citations: 22
A proposal of Visual Rating method to set the priority of detailed evaluation for masonry infilled RC building MS Islam, H Alwashali, D Sen, M Maeda Bulletin of Earthquake Engineering 18 (4), 1613-1634 , 2020 2020 Citations: 17
Effect of Water to Cement Ratio and Age on Portland Composite Cement Mortar Porosity, Strength and Evaporation Rate ER Latifee, D Sen, MR Kabir American Journal of Engineering Research 5 (8), 120-127 , 2016 2016 Citations: 17
Numerical investigation on the effect of infill masonry on lateral behaviour of surrounding RC frame MM Islam, D Sen, SR Chowdhury Asian Journal of Civil Engineering 24 (8), 2851-2862 , 2023 2023 Citations: 12
Seismic capacity of RC frame buildings with masonry infill damaged by past earthquakes H Alwashali, MS Islam, D Sen, J Monical, M Maeda Bulletin of the New Zealand Society for Earthquake Engineering 53 (1), 13-21 , 2020 2020 Citations: 12
Lateral strength evaluation of ferrocement strengthened masonry infilled RC frame based on experimentally observed failure mechanisms D Sen, H Alwashali, MS Islam, M Seki, M Maeda Structures 58 , 2023 2023 Citations: 11
A Numerical Study on Predicting Bond-Slip Relationship of Reinforced Concrete using Surface Based Cohesive Behavior MB Prince, D Sen Frattura ed Integrità Strutturale 18 (69), 154-180 , 2024 2024 Citations: 7
In-plane seismic performance of masonry-infilled RC frame with and without ferrocement overlay F Zahura, D Sen, R Sabrin, A Das, MJ Uddin, Z Tafheem, F Khanam, ... 17th world conference on earthquake engineering, 1-12 , 2020 2020 Citations: 5
A comparative investigation on experimental lateral behaviour of bare RC frame, non-strengthened and ferrocement strengthened masonry infilled RC frame D Sen, FT Zahura, A Das, H Alwashali, MS Islam, M Maeda, M Seki, ... Bulletin of the New Zealand Society for Earthquake Engineering 57 (2), 85-96 , 2024 2024 Citations: 4
Advantages and limitations of retrofitting masonry infilled RC Frames by Ferro-cement based on experimental observations H Alwashali, D Sen, M Maeda, M Seki Proceedings of the 17th World Conference on Earthquake Engineering, Sendai … , 2020 2020 Citations: 4
Proposal of visual rating method for seismic capacity evaluation and screening of RC buildings with masonry infill MS Islam, H Alwashali, D Sen, M Maeda, MAM Sikder, MR Islam Proceedings of the 2019 Pacific Conference on Earthquake Engineering and … , 2019 2019 Citations: 4
Investigation of the Ferro-cement laminated infilled masonry wall under cyclic lateral load D Sen, Y Torihata, H Alwashali, MS Islam, Z Tafheem, M Maeda Pacific Conference on Earthquake Engineering (PCEE) , 2019 2019 Citations: 4
BEHAVIOUR AND STRENGTH OF RC COLUMNS RETROFITTED WITH STEEL ANGLES AND STRIPS UNDER ECCENTRIC AXIAL LOADS D Sen Bangladesh University of Engineering and Technology , 2017 2017 Citations: 4
A COMPARATIVE STUDY OF STEEL ANGLES AND STRIPS STRENGTHENED RC COLUMNS D Sen, M Begum ASIAN JOURNAL OF CIVIL ENGINEERING (BHRC) 18 (3), 515-534 , 2017 2017 Citations: 4
Preliminary and detailed seismic evaluation of an existing RC building in Bangladesh: a case study MF Momin, MW Islam, FB Masud, N Naomi, D Sen Innovative Infrastructure Solutions 9 (10) , 2024 2024 Citations: 3
Experimental Investigation on the Behavior of Steel Angle and Strip Jacketed RC Column Under Eccentric Loading D Sen, M Begum Journal of The Institution of Engineers (India) Series A , 2023 2023 Citations: 3
Investigation of the lateral capacity of Ferro-cement retrofitted infilled masonry in RC frame and simplified prediction D Sen, H Alwashali, MS Islam, M Maeda AIJ Journal of Technology and Design 26 (62), 159-153 , 2020 2020 Citations: 3