Md Aftabur Rahman

• Doctor of Philosophy
• Faculty at Chittagong University of Engineering & Technology

The dynamic nature and sudden occurrence in loose, saturated soil deposition make liquefaction the major damage catalyst during an earthquake. Areas liquefied in the built-up areas suffer significantly, and there is substantial evidence of such occurrence since the term liquefaction coins. (Idriss & Boulanger, 2008) Being an active seismic region a...

This research investigates the application of Ladle Furnace Slag in stabilizing expansive soil, particularly in pavement construction. Laboratory-prepared expansive soils have been added with different proportions of Ladle Furnace Slag-based geopolymer. The study also considered two moisture content levels: the optimum moisture content (OMC) and a...

A 7.2 Magnitude (Moment Magnitude Mw: 6.8) earthquake occurred in the south inland of Iwate prefecture at 8:43 JST on June 14, 2008. Its epicenter was about 10 km northeast of Mt. Kurikoma, an active Nasu volcanic belt composite volcano whose lava flows from several eruption centers covering underlying crumbly secondary volcaniclastic deposits. Thu...

The expansive soil swells significantly in the presence of moisture, which often leads to the failure of superstructures. Conventional stabilization techniques are applied in many instances, although environmental issues are of significant concern for such stabilization. Keeping this in mind, an attempt is made to apply a new approach for stabilizi...

The study was conducted to understand the geotechnical and geomorphological issues related to rainfall-induced landslide disaster in Chittagong city, Bangladesh. Ten soil samples from landslide susceptible locations and two samples from landslide occurrence sites were collected and tested for quantitative analysis of geotechnical properties of soil...

Seismic slope failure is one of the most devastating geo-hazards, and development of rational mitigation strategy has the top priority accounting for both human and economic losses. The insight mechanics of slope failures under seismic triggering provides plausible information to seismic mitigation policy. Considering the inherent limitation of exp...

The rapid demand for urbanization expands the requirements of infrastructures and owing to the scarcity of available firm land; people are now built structures on soft soils. However, the application of a deep foundation for a low-rise structure may not be economically feasible for developing countries. The economic, as well as safe foundation, can...

Understanding the insight of slope collapse is necessary for effective hazard mitigation policy. The conventional method may not be able to capture the actual failure mechanics as these methods are based on simplified assumptions of the predetermined slip surface. Highlighting this real engineering problem, an attempt is made in this research to si...

Earthquake-induced liquefaction is responsible for the extensive damage to the infrastructures in both developed and developing cities. Chattogram, the second largest city of Bangladesh and one of the vital port city in the south Asian region is situated in the active seismic region, and the frequency of recent small magnitude earthquakes around th...

Geotechnical engineering is considered one of the oldest disciplines in civil engineering. To date, to extract hidden information, numerical simulations have been performed using the traditional grid-based numerical approach in the Eulerian framework. However, this may not capture some geotechnical engineering problems caused by the large deformati...

Identifying the collapse mechanism of a breakwater mound caused by overtopping and seepage during extreme natural disasters is an essential element of a hazard mitigation policy. This research study conducts a set of experiments to quantify the effects of seepage and overtopping on the scouring of a breakwater. A scaled model of the Kamaishi breakw...

Rational estimation of debris flow velocity is one of the key issues in debris hazard mitigation. Among the various procedures, back-calculation of debris flow velocity is one of the most frequently used approaches. Back-calculation includes determination of super-elevations and channel properties, and velocities are calculated using the forced vor...

The use of super-elevations that a forced vortex flow leaves on the valley walls of a curved flume is a plausible approach toward estimating debris flow velocities in earthquake-induced geo-hazard studies. The centrifugal force of a speeding flow is responsible for a higher flow depth on the outer bend. However, in reality, a flow is not steady, an...

Concrete is one of the most popular and widely used construction materials in the world. Concrete provides suitable features for construction such as durability, fire resistance, satisfactory compressive strength, availability and is economic as well compared to other construction materials. Now a day, depletion of natural resources and disposal of...

With rapid population growth over the past 30 years and frequent seismic activity during this period, the unchecked developments of the built environment in Bangladesh have been resulted in toughness to earthquake. Identifying structures that have high vulnerability is of critical importance for both reliable loss estimation as a result of an expec...

This paper presents an experimental investigation carried out to study the effects of Ground Granulated Blast Furnace Slag (GGBFS) on strength development of mortar and the optimum use of slag in mortar. Cement was partially replaced with seven percentages (10%, 20%, 30%, 40%, 50%, 60% and 70%) of slag by weight. Ordinary Portland cement (OPC) mort...