Sajedur Rahman

Mr. Sajedur Rahman is currently a Lecturer in the Department of Civil Engineering at East West University (EWU), Dhaka, Bangladesh. He holds a Master of Science (M.Sc.) degree in Structural Engineering from the Asian Institute of Technology (AIT), Thailand, where he was awarded the prestigious Royal Thai Government Scholarship (His Majesty the King’s Scholarship), covering all tuition, accommodation, and living expenses. He received the prestigious Wen Zei Yang Prize for outstanding academic performance during his graduation ceremony at AIT.

Before joining East West University, he served as a Senior Lecturer in the Department of Civil Engineering at Port City International University (PCIU), Chattogram, Bangladesh, from November 2018 to September 2024. He began his teaching career at PCIU as a Lecturer in September 2015.

He completed his Bachelor of Science (B.Sc.) in Civil Engineering from Ahsanullah University of Science and Technology (AUST), Dhaka, Bangladesh, in July 2015. He achieved 3rd place in his department and was awarded the Dean’s Award for exceptional academic performance.

Institutional Website: https://fse.ewubd.edu/civil-engineering/faculty-view/sajedur.rahman

Research Interests

Concrete Materials.
Green Concrete.
Fiber Reinforced Concrete.
Earthquake Engineering and Sustainability.
Structural Health Monitoring.
Damage Assessment.
Finite Element Analysis.

Technical Skills

Structural Analysis and Design:
AutoCAD, ETABS, SAP2000, STAAD Pro, CSI Col, Section Builder, GEAR, Vector and Formworks, GRASP.
Numerical Analysis and mathematical operations:
MATLAB.
Simulations and Finite Element Analysis:
Solid Works, ANSYS, ABAQUS, GMSH, AEM.
Programming:
C Programming.

Research Experience

Master's Thesis:

“A COMPREHENSIVE EVALUATION OF REINFORCED CONCRETE STRUCTURES USING STRAIN-BASED DAMAGE INDEX IN 3D APPLIED ELEMENT METHOD”

Current structural analysis methods often neglect detailed stress and strain information within elements. This research introduces a novel strain-based damage index (DI) implemented within a 3D Applied Element Method (AEM) framework. The DI, based on material properties, captures damage at the element level and is normalized for clear interpretation (0 = undamaged, 1 = failure). Validation against experiments showed the DI's effectiveness in predicting crack patterns. Furthermore, the DI was applied to assess a school building in Dhaka under increasing earthquake loads. The DI successfully identified weak zones near stairs, highlighting its potential for seismic vulnerability assessment of aging infrastructure. This method, offering local damage insights, can aid policymakers in improving earthquake safety measures.

Undergraduate Thesis:

“INVESTIGATION ON THE COMPRESSION ZONE OF P-M INTERACTION DIAGRAM FOR RC SQUARE COLUMNS MADE OF SFRC”

Experiments investigated the effectiveness of steel fiber reinforced concrete (SFRC) for improving earthquake resistance in Bangladesh. SFRC columns showed significant improvement in both compression capacity and ductility compared to regular concrete columns. This enhancement was observed under various loading conditions (concentric and eccentric) using P-M Interaction Diagrams. Finite Element (FE) models were created to replicate these experimental results and successfully match the structural behavior and failure modes. These validated FE models can be used for cost-effective analysis of larger SFRC structures in the future. The study demonstrates that SFRC with locally available fibers is a promising solution for Bangladesh to improve the seismic performance of buildings by reducing the risk of brittle failures.