Md. Asif Rahman, PhD
Research Focus
Concrete Materials
Image processing and constructing concrete meso/micro structure
Multiscale/ Multiphysics modeling of coupled chemo-physical-mechanical behaviors
Thermal swap, moisture diffusion, ASR, freeze-thaw cycle.
Damage model and service life prediction of concrete under degradation
Renovation:
Retrofitting of existing structures
Strengthening of structural materials
Current Affiliation
MicroMechanics & Smart Infrastructure Group, MMIG
Supervisor: Dr. Yang Lu
Current Research Project
Title: “A TIME-DEPENDENT CHEMO-MECHANICAL ANALYSIS OF ALKALI-SILICA REACTION FOR THE DISPARATE GEOMETRY OF CONCRETE MESO-STRUCTURE"
Supervisor : Dr. Yang Lu
Department of Civil Engineering, BSU
ABSTRACT:
Complex chemophysics of alkali-silica reaction (ASR) in Portland cement concrete deteriorates concrete service life and requires quantitative assessment. Within this context, the developed model provides a new perspective from mesoscale chemo-mechanical scheme for a better understanding of ASR kinetics. The simulated results shows how ASR expansion as well as ASR-induced damage progresses in concrete structure based on different composition of reactive aggregate and alkali hydroxide concentrations. This model can be used as an effective tool in the field of concrete materials to predict the service life, as well as on time maintenance decision of concrete structure.
Propagation of expansive ASR gel with time
Propagation of ASR-induced damage with time
Undergraduate Thesis
Thesis Highlights: “Retrofitting Process of Existing Building with respect to Seismic Consideration in Bangladesh”
Supervisor : Professor Dr. Md. Mahmudur Rahman
Professor, Department of Civil Engineering, AUST
ABSTRACT:
There might be many buildings in Bangladesh which do not meet the current seismic requirement and as a result may suffer much damage during the earthquake. Especially the older buildings which were constructed without the consideration of proper seismic forces should be evaluated for seismic load and retrofitted accordingly. If remedial measures are taken based on seismic evaluation, much damage can be overcome. In this research study, a typical existing building in Dhaka city constructed before 1990 is considered for seismic evaluation.