Hussein Kareem Sultan

• PhD Structural Engineering
• PhD at Al-Muthanna University

The purpose of this study is to investigate the effect of high temperatures on the mechanical properties of lightweight geopolymer concrete made of palm oil industrial waste materials known as palm oil fuel ash (POFA) and oil palm shell (OPS) as binder and coarse aggregate in geopolymer concrete would give an added advantage in both environmental a...

In the majority of developed nations, there is a trend toward the construction of environmentally conscious buildings that also aim to use fewer basic resources. Natural aggregate is frequently substituted with recycled aggregate made from construction waste. This study aims to investigate the effects of varying ratios of steel and polypropylene fi...

In our communities, the crucial role played by basic facilities such as hospitals, communication systems, roads, and bridges is highlighted. They are considered essential, particularly in the aftermath of natural disasters when services need to be sustained. The implementation of control systems during structural design allows structures to handle...

Reactive powder concrete is widely recognized for its remarkable mechanical characteristics and resilience, rendering it an ideal option for structural uses that include heavy loads. However, the intricate interaction of numerous material and geometric aspects makes constructing reactive powder concrete beams extremely difficult. By using MATLAB to...

In this work, the properties of self-compacting concrete (SCC) and SCC containing 0.5 and 1% glass fibers (with lengths of 6 and 13 mm) were experimentally investigated, as well as their performance at high temperatures. With a heating rate of 5 °C/min, high-temperature experiments were conducted at 200, 400, 600, and 800 °C to examine mass loss, s...

The aim of this research was to determine the minimal requirements for shear reinforcement for reactive powder concrete (RPC) rectangular cross-sectional beams with a compressive strength of 157 MPa and a steel fiber volume content of 2.0% that remained constant for all the tested beams. Additionally, the recommendations of KCI-2012 and AFGC-2013 f...

This study evaluates metallic yield dampers, specifically slit steel dampers, for protecting steel beam-to-column connections during seismic events. Finite element model simulations were conducted for the damper and its connection. Analysis of circular parameters, like the radius slot, showed that appropriately sized slit dampers exhibit advantageo...

The main purpose of this paper is to propose a model for estimating the hysteresis damping ratio of moment steel frames and compare them with the results obtained using direct displacement-based design. In this study, different models of steel bending frames were examined by using several type of analysis to obtain this ratio. Thirty-steel frame mo...

A railway on 4 m height embankment is being built in the south of Iraq. The railway alignment is extending on a compressible soil experienced impermissible settlement according to the results of soil investigation of the soil at the project site. A trial for reducing the settlement was done adopting sand piles. Nonlinear analysis was conducted to e...

The current work discusses optimizing the structural design of reinforced high strength concrete rectangular sections under design loads. Using a least-cost design criterion and minimal design variables, an analytical approach to the problem is devised. A nonlinear mathematical programming format for the formulation of the problem is among the thin...

The technical and economic effects of the two methods of retrofitting with buckling restrain bracing and using concrete shear wall were investigated. The results of this study showed that using reinforcement, the amount of target displacement in the models was significantly reduced and it was observed that the concrete shear wall had a greater impa...

Crushed dolomite with a nominal size of 8 mm and fine quartz sand with a nominal size of 2 mm were used to produce reactive powder concrete (RPC) in this study. The compressive strength is comparable to that of standard RPC with a maximum aggregate size of less than 0.6 mm. The use of crushed dolomite modified the mixing process and mechanical prop...

Although extensive investigations have been carried out to produce reactive powder concrete (RPC), the majority of these investigations were conducted based on using fine sand with a maximum particle size of 600 microns and cured under certain conditions. Crushing and grinding processes applied to obtain smaller aggregate sizes and applying heat cu...

The reduction in the shear strength accompanied to the increasing in the section depth is characterised as size effect, assuming that all parameters are kept constant. Such behaviour is controlled by many factors. The geometry of the element formed between the load and support points is one of those factors that need to be highlighted. Owing to tha...

In this paper, two types of bridges were taken to carry out the analysis and design according to the AASHTO Code and the SAP2000 program, in the beginning, work is done using AASHTO Code and both bridges are designed and analyzed, the first one was the suspension bridge and the second was a bridge supported in the pier region only. The two models,...

The goal of this study is to assess the fresh and hardened properties of self-compacting concrete (SCC) prepared using locally available materials. This research includes also the impact of polypropylene (PP), steel and hybrid fibers on the same properties. In addition, the mechanical properties of SCC specimens (with and without fibers) at high te...

Many codes are used in different countries to design different constructions including bridges. Using of suitable code is depending on the project requirements and safety. In this paper two different codes are used to design a pier bridge to show the differences and similarities between them in order to use the suitable one according to the needs o...

Designing a reinforced concrete column to resist an axial load and bending moment is an iterative procedure which involves tedious calculations. The design is influenced by many variables, such as load eccentricity, column cross-section size, steel percentage, neutral axis location, steel grade, and concrete grade, requiring the use of interaction...

In this study, refinery wastewater treatment scheme, the electro-Fenton oxidation process is obtainable. Through Fenton oxidation treatment, numerous working limits remained examined, for instance hydrogen peroxide, electrolysis time and pH. The effects of the working variables including the pH (2-9), hydrogen peroxide concentration (20-60 mg/L) an...

The most common effluent created by the oil industry is oily wastewater. This produced water (PW) corrodes the steel piles in the infrastructure of bridges, which shortens their service life. It is important to remove organic content in PW to prevent this outcome. Samples from the Ahdab oil field were used in this study. Two catalysts were selected...

Although reactive powder concrete (RPC) is a well-known composite that achieves high rates of compressive strength, its behavior during fire still questionable. This study investigates the mechanical characteristics of RPCs following exposure to high temperatures. RPCs were prepared using high quantities of cement, silica, quartz, and fine aggregat...

Most of the reinforced concrete buildings that have been constructed are not earthquake resistant or have not sufficient and acceptable resistance. Therefore, these buildings need retrofitting with reliable, simple, and cost-effective retrofitting methods, particularly against lateral loads. Since a significant number of vulnerable buildings have a...

The research shows employing sundog cells for cooling process by design, progress of "evaporative cooling system ". All this to offer inexpensive method, devours more virtue as well as few energies in contrast with ordinary "evaporative cooling system". Consequently, this paper focuses "in the design and creation " direct current (DC) evaporative c...

In fast-heated concrete the explosive behavior of concrete is observed in fire. The key factors regulating the spalling phenomenon are attributable to the low porosity and high density of the material, as well as the restricted capacity to move gases and liquids. Therefore the chance of spalling is much higher for high-strength, ultra-high-strength...

Joints in construction are finishing casting points in the placing of a concrete process, and these are needed in various constructions because it is impossible to install concrete in an individual connected procedure. The quantity of mixture that can be installed at a whole time is administered by the batching and mixing ability and by the strengt...

The problem of housing and the provision of housing requirements is one of the major problems in the civilized world today, which requires deep planning and implementation policies at various stages, especially in developing countries and for low-income community groups. And one of the approved housing policies in many countries of the world is the...

ABSTRACT Ultrahigh performance fiber reinforced concrete (UHPFRC), as a new class of concrete, has attracted a lot of attention in recent years. This type of concrete with a compressive strength of more than 150 MPa, has high packing density, very low permeability, superior durability and very high abrasion and corrosion resistance. Small steel fib...