Mohammed Yousif Fattah

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Verified

Mohammed verified their affiliation via an institutional email.

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• Ph.D. (Professor)
• Professor (Full) at University of Technology - Iraq

Warm mix asphalt (WMA) has attracted a lot of interest and attention from the pavement industry since it was introduced as a potential solution to replace traditional hot mix asphalt (HMA). Although WMA has several advantages over HMA pavements, such as lower fuel consumption and emissions, conclusive answers about the feasibility of this replaceme...

Soft clay soil is known for its high compressibility and low bearing capacity, making it one of the most challenging soil types. Sand columns and sand layers reinforced with geosynthetics are effective techniques to enhance the performance of foundations built on soft clay. Stone or sand columns improve load-bearing capacity by utilizing the natura...

The purpose of this study is to demonstrate how variations in soil suction impact shear strength, swelling pressure, and volume changes. To that end, small-scale tests were conducted on both pure bentonite and bentonite in mixtures of 30%, 40%, and 50% with sand under dry conditions, using values selected from compaction curves. A model with dimens...

The performance of stone columns in enhancing the stability of structures subjected to seismic loads has significant implications for soil improvement in soft clay soils. This research presents a computational and experimental analysis of stress transfer mechanisms in stone column-supported foundations under dynamic seismic loading. A series of mat...

Stone columns and sand layers reinforced with geosynthetics are effective methods for improving the performance of foundations placed on soft clay soil. Stone columns increase the load-carrying capacity by using the soil’s natural circumferential confinement. The issue of sand columns bulging was solved by grouting these columns, which resulted in...

Construction on swelling soil can be a critical problem for civil engineers because of its propensity to volume change. Using waste material to enhance this type of soil would be an ideal choice, as it takes into consideration economic factors and environmental protection. This study investigates the effectiveness of using waste paper ash (WPA) to...

Date palm leaf fibers are suitable for engineering applications due to their availability, inexpensiveness, and eco-friendliness. However, there is a risk of biodegradation in the long term. This paper explores date palm leaf fiiber (DPL) properties and the protection of the fibers from biodegradation to enhance their lifespan. To this end, two coa...

The present research seeks to comprehend and evaluate the impact of varying concentrations of HCl acid solution on the compressibility and shear strength of silty clay. The compression test and the unconfined compressive strength test were conducted, and the SEM test was performed to analyze the microstructure of the soil with and without contamina...

Article Info Abstract Received 08/07/2024 The bearing capacity of footing with and without a skirt has been investigated using a series of finite element analyses using the Geo-slope program. Several models were conducted with varying skirt depths and slope crest lactations. The impact of slope inclination , height H, and soil undrained shear stre...

A number of destructive and non-destructive tests were conducted on rock samples collected from various zones in northern Iraq. So far, for Iraqi rocks, few studies have correlated Schmidt hammer rebound (R) with both unconfined compressive strength (UCS) and Brazilian tensile strength (BTS). In this study, the objective is to develop a relationshi...

Rock cracks are the end consequence of a masses of the rock failing in tension, shear, or a amalgamation of the two. Depending on how the machinery works that created the fissures and some of the rock, two forms of fissure morphology-dry or saturated fissures-may be visible (water-filled fissures). The goal of the current work is to develop a conne...

Pipe pile models were installed with varying pile lengths in accordance with the ratio (L/D = 15 and 20) in loose, sandy soil with a relative density of 25%. Open-ended pipe piles at distances of two or three dimensions now have interior wings added. The new model shows a larger bearing capacity than the traditional pipe piles (open-ended and close...

The foundation of the turbo-generator comprises a generator, turbine, and associated equipment situated on the top of the frame foundation, which consists of a bottom raft, top deck, and columns. The current study examines how the geometrical characteristics of the frame foundation, such as slab thickness, column dimensions, and length, affect t...

This study explores the potential of a composite binder comprising cement bypass dust (CBD) and spent fluid catalytic cracking (FCC) catalyst for sustainable pavement base stabilization. Various CBD/FCC ratios (30:70, 50:50, 70:30) and binder contents (4%, 6%, 8%, 10%) were evaluated through laboratory testing. The 50:50 CBD/FCC mixture demonstrate...

The collapsible soil is a particular form of unsaturated soil, which is susceptible to loss of their strength due to a decrease in total volume upon wetting. Gypseous soils are considered to be problematic soils that are directly affected by wetting. Increasing the water content in soil samples can increase the degree of deterioration in the physic...

One significant phenomenon not adequately considered in the present design recommendations is pipe pile plugging. Understanding its mechanism is essential for designing new structures. A series of numerical simulations were established to investigate the bending moment, end bearing, and lateral displacement responses of open-ended pipe piles wit...

The use of sustainable materials in geotechnical applications has increased in recent years due to their positive impacts on geo-environmental and future generations. This paper contributes to existing knowledge on geocell reinforcement of soil by proposing a new inexpensive product: cells made from natural materials, Date Palm Leaf fiber coated wi...

This comprehensive review examines the intricate aging processes occurring in sanitary landfills, synthesizing insights from eight key studies. It illuminates the nuanced aspects of aging by delving into the physical, chemical, and mechanical changes within landfills. The results from these studies emphasize the dynamic nature of these alterations,...

The release of greenhouse effects into the environment is one of the factors contributing to pollution connected to the development of transportation infrastructure. Warm mix asphalt (WMA) technology creates asphalt at lower temperatures (20-40°C) than hot mix asphalt, which makes it environmentally friendly although it has several benefits unrelat...

This volume contains selected articles from the Fourth International Conference on Geotechnical Engineering-Iraq, 2024 (ICGE-2024) and Warith First International Conference of Engineering Sciences (WICES-2024) hold on 17–18 April 2024, at Warith Al-Anbiyaa University, Karbala, Iraq. These eminent gatherings are being meticulously organized by the C...

Gypseous soil is a collapsing soil that has not yet been approved as a construction material since its behavior under water, temperature, and pressure is unreliable and unpredictable. Researchers and scientists are always searching for new and creative ways to optimize the benefits of calcium carbide residue (CCR) recycling, which is a byproduct of...

There are instances where foundations are closely spaced, such as around railroad sleepers and foundations close to property lines. In such circumstances, the stress isobars of the separate footings may interact and combine to generate an overlapping stress isobar that affects a wider zone of the foundation soil and alters the individual foundation...

This study aims to enhance the suitability of expansive clayey soils for use as landfill liners by incorporating water treatment sludge ash (WTSA). Expansive soils, prone to swelling and desiccation cracking, compromise landfill liner integrity, increasing the risk of groundwater contamination. Local soils often do not meet the requirements for hyd...

Anaerobic digestion (AD) of feedstocks yields biogas, a potentially useful new energy source. This study looked into the anaerobic co-digestion of cow dung and organic garbage to produce biogas. An anaerobic biodigester, with a volume of 20 L, was used to digest organic waste (OW) and to trace the changes that occur during the AD process. It was eq...

This comprehensive review examines the intricate aging processes occurring in sanitary landfills, synthesizing insights from eight key studies. It illuminates the nuanced aspects of aging by delving into the physical, chemical, and mechanical changes within landfills. The results from these studies emphasize the dynamic nature of these alterations,...

When piles are used to reduce raft settlement, significant shear stresses and bending moments can be created.Separate piles are utilized to alleviate concerns about high tensions in piles and rafts. A structural fill sand-gravel cushion in an unconnected piled raft foundation isolates the piles from the raft (UCPR). The cushion redistributes the lo...

Three asphalt grades (40-50, 60-70, 85-100) were used with hydrated lime, Portland cement, and limestone fillers.  Optimal binder content was determined using the Marshall method, with 10%, 20%, and 30% RAP used.  Asphalt with hydrated lime showed the best stability, flow, and air voids compared to other fillers.  Two recycling agents, waste oil...

In geotechnical engineering, a scale factor “n” is a numerical ratio that relates the physical properties of a physical model to those of a prototype. The effect of scale factor on the dynamic response of a frame foundation used for high-speed turbo machines is examined through numerical analyses to clarify the influence of scaling dimensions, freq...

In 2017, a strong base excitation struck the Iraqi border near Halabja, which was classified as the latest earthquake in Iraq. Its reflection reached Baghdad city with an acceleration of (0.11 g). The objective of this paper is to study the results obtained by different seismic analysis methods, namely Time history analysis (THA), Response spectrum...

Due to its superior performance over traditional materials, polymer concrete has emerged as a new engineering material in the current context. The main focus of this study was the design and manufacture of polyester polymer concrete (PC) from various recycled materials for use in various building applications. Four different types of recycled aggre...

This study reviews the seismic analysis methods used for building design and analysis in Iraq's north, middle, and south provinces, citing seismic codes and standards from other authors' studies. Buildings studied by authors varied from reinforced concrete buildings to bearing walls buildings. From the review, it is obvious that the Pushover Method...

To achieve the required density, hot-mix asphalt pavements require adequate compaction. amount of energy to accomplish best degree of compaction varies depending on Gradation, asphalt content, filler kind form, and compaction are all factors to consider The compaction energy index (CEI) is used in this study to measure the compactability of the sam...

In most landfills, better termed as open dumping, there is no baseline, drainage course, or suitable top covers in developing nations, creating a potential groundwater/surface water pollution problem because of leachate. A liner system contains the waste, which has received much attention from researchers. Because this is an interdisciplinary subje...

The treatment of organic solid waste (OW) is a huge problem because a lot of it is disposed of every year and needs to be treated. The anaerobic digestion of organic waste is considered one of the most promising processes. Based on the current research, the anaerobic digestion of (OW) is improved when the substrate is mixed with sewage sludge (SS)...

As with other problematic soils, organic soils frequently deviate from known soil behavior rules, posing significant problems to the design profession. Indeed, organic matter in soils is commonly associated with high compressibility, severe secondary compression, often unacceptable strength properties, and low unit weight. Compressibility and creep...

Installing a liner system keeps wastes separate from the environment and attenuates leachate contaminants • Weather, compaction degree, and solid waste composition influence leachate production • Bottom liner permeability is crucial in determining contamination transport through liner systems • Clays are locally accessible and cost-effective for la...

One of the issues with clayey soils, particularly those with significant quantities of organic matter, is the creep settling problem. Clay soils can be strengthened using a variety of techniques, one of which is the use of stone columns. Prior research involved foundation loading when the soil beds were ready and confined in one-dimensional consol...

Purpose The experiments of this study investigated the effect of the subgrade degree of saturation on the value of the stresses generated on the surface and the middle (vertical and lateral stresses). The objectives of this study can be identified by studying the effect of subgrade layer degree of saturation variation, load amplitude and load frequ...

There is a dearth of research on the cyclic vertical loading problem for cohesive soil, with the majority of studies conducted in commercial settings. The purpose of this work is to investigate the experimental effects of vertical cyclic compression stress on the undrained shear strength of clayey soil. To investigate the undrained shear strength o...

Anaerobic Digestion (AD) of organic waste is one of the most promising processes and is the ideal solution for the disposal of organic waste (OW) and at the same time, the production of methane gas which may be used as a sustainable energy resource. An anaerobic biodigester with a volume of (20) liters has been used to digest organic waste and to t...

Artificial neural networks, machine learning, and data preparation are normally implemented in a wide range of real-world problems, especially in geotechnical applications with optimistic prospects of accurate procedure outcomes. This technique has been utilized to precisely predict the top settlement of piles with various piles and soil parameters...

The single floating stone column behavior in very soft soils with a low undrained shear strength of Cu ≤ 20 kN/m2 was studied in the finite-element method to investigate the influence of stone column's area ratio on the normalized pressure-settlement curves of circular footings of different diameters. The studied cases consist of stone columns of 1...

In this paper, an attempt has been made to investigate the impacts of leaching on the geotechnical and microstructural properties of clayey gypseous soils at various percentages of gypsum; 20 %, 40 %, and 60 %, and their respective densities. In this respect, the work delves into the interaction of the properties based on the following experiments:...

Purpose The main objective of the present research is to investigate the benefits of using geogrid reinforcement in minimizing the rate of deterioration of ballasted rail track geometry resting on soft clay and to explore the effect of load amplitude, load frequency, presence of geogrid layer in ballast layer and ballast layer thickness on the beha...

The aim of this paper is to give a comprehensive awareness of some substantial factors including the influences of the embedment level of a building and the presence of dead loading which affect the structure-soil-structure interaction (SSSI) of nearby buildings that were not investigated thoroughly in the preceding studies related to seismic analy...

In the quest for sustainable building solutions, attention has increasingly turned to innovative structural designs and technologies that minimize environmental impact. Within this context, this study explores the integration of advanced sun-breakers and aerodynamic features into building design. Recent developments in shading devices are analysed...

Developing countries industrial growth necessitates innovative machine foundation design and resilient infrastructure. Meanwhile, soil properties play a significant role in the satisfactory design of machine foundations. The paper presents an experimental work to determine accurately the damping ratio and shear modulus by equations. The paper studi...

Modeling the propagation of waves in geomechanics is an essential part of dynamic analysis. In geotechnics, the study of the interaction between the soil and the foundation is particularly interesting. In order to mimic low-speed operating types (less than 1,500 rpm), this study details the creation of a dependable and efficient approach for design...

When evaluating the dynamic response of soil, shear modulus is an essential parameter to consider. In most cases, the shear modulus is estimated using the shear wave velocity (Vs) of the soil as observed in field geophysical testing. Consequently, shear modulus is the main parameter for geotechnical earthquake engineering problems, both quantitativ...

The theoretical and practical studies of the cyclic loads resulting from the movement and passage of trains on the unsaturated subgrade to determine the effect of the degree of saturation and moisture content on the foundations and infrastructure of the railway lines, especially the settlement in the railway lines as a result of the development of...

In this paper, a study of the earthquakes that have affected Baghdad region in Iraq is made" The documents collected from different references are analyzed to determine the seismic zone of Baghdad. Evaluation of seismic design forces for equivalent static analysis of earthquakes in Baghdad region is mc"de according to the Iraqi seismic code and the...

A general mixed finite element formulation (u - w - ) is presented in this paper. This formulation includes the inertia effects and the soil skeleton is considered compressible. The application of this formulation in solving soil dynamic problems of saturated sand is made by governing the boundary conditions concerning the pore fluid pressure. A pr...

Soil investigation is very important to check the bearing capacity before constructing any structure. There are different types of soils that cause many problems for the structure in short and long term, which are known as problematic soils. A lot of researchers dealt with improvement and reinforcement of the problematic soils by physical and chemi...

When Rankine or Coulomb theories are used to design a retaining wall, it is accepted that the retaining wall will experience a lateral displacement. By allowing the wall to move laterally, the earth pressure decreases on the active side of the wall and wall and earth pressure increases on the passive side, and therefore, more economical walls can b...

Semiflexible pavement (SFP) is considered a composite mixture, as it consists mainly of a porous asphalt mixture with high air voids grouted with highly flowed cementitious grout. Numerous benefits have been attributed to this technology, including exceptional slip resistance, a high static bearing capacity, and rutting resistance. In this study, t...

The design of steel beam-column end-plate bolted connections is becoming increasingly popular owing to its simplicity of production. This requires knowledge of the full nonlinear resisting moment–rotation (M–Φ) behavior of the joint. To investigate the impact of various geometrical factors on the overall behavior of the connection, this work provid...

Through the past few months, our world witnessed and is still suffering from several severe earthquakes in different places around the globe like Turkey, Syria, and Morocco. Therefore, the seismic activity domain grew the center of attention for researchers, engineers, and even regular people. The most significant topics in this field that must be...

The physical, chemical, and biological features of leachate were explored. The sequencing batch reactor (SBR) is a fill-and-draw activated sludge system for wastewater treatment. In this system, wastewater is added to a single "batch" reactor, treated to remove undesirable components, and then discharged as a biological treatment procedure followin...

Using steel jackets around reinforced concrete columns is a widespread technique for static and seismic retrofitting applications. The dimensionless interaction diagrams for reinforced concrete columns strengthened with steel angles are not attempted yet. Thus, this paper presents the formulation of dimensionless interaction diagrams for reinforced...

Gypseous soil poses a significant challenge in geotechnical engineering due to its susceptibility to collapse under saturation. This type of soil covers approximately 33% of regions in Iraq, primarily in unsaturated conditions. This study focuses on two types of gypseous soils: one with moderate gypsum content from Karbala city (G1) and the other w...

Ground modification refers to a variety of processes for enhancing the engineer-ing characteristics of the ground. It works in several soil types, including collaps-ible, expansive, soft, and mechanically deficient soils. Strips, bars, sheets, mem-branes, and fibers are examples of reinforcing materials that can help to strength-en the ground.Natur...

This study uses numerical analysis to investigate the behavior of the footing under various variables, such as footing spacing, depth, soil undrained shear strength, and groundwater table levels. The use of artificial neural network (ANN) predictions to estimate settlement behavior for each configuration was a unique component of the research. The...

Ground modification refers to a variety of processes for enhancing the engineering characteristics of the ground. It works in several soil types, including collapsible, expansive, soft, and mechanically deficient soils. Strips, bars, sheets, membranes, and fibers are examples of reinforcing materials that can help to strengthen the ground. Natural...

This study aims to analyze the behavior of soils containing gypsum, specifically focusing on the impact of gypsum content and different soil parameters. Several physical tests and assessments were conducted on synthetic gypseous soil, which consists of silty clay and different proportions of gypsum (20%, 40%, and 60%). The research emphasizes the n...

Expansive soil is a form of soil that can expand and contract, changing its volume. Montmorillonite, a mineral with the ability to dissolve in water, makes up the majority of these kinds of soils, and by increasing the volume of the soil, it causes the soil to heave. Expansive soils could be a substantial concern for engineered buildings due to the...

Seismic tests consisted of three small-scale structural steel models of varying heights on sand soil. • Structural seismic responses were represented by time-domain behaviors like acceleration and displacement. • Taller buildings strongly affected shorter adjacent buildings' acceleration and displacement. • Taller buildings weakly affected the soil...

This paper investigates and compares the mechanism and the amount of load to be carried by the shaft and tip for different pile group configurations tested in saturated soil prepared at two properties and unsaturated soil. The stresses under the center of pile group are measured by soil pressure transducer, and the stresses are converted to a load...

Deep foundations are frequently built close to existing tunnels in the urban environment. Tunnels can only withstand very small movements. The construction of bored piles and/or the subsequent loading of the piles may result in unbearable movements or stresses that could result in cracking of the tunnel linings, which worries obstacles to the tunne...

Gypseous soil poses a significant challenge in geotechnical engineering due to its susceptibility to collapse under saturation. This type of soil covers approximately 33% of regions in Iraq, primarily in unsaturated conditions. This study focuses on two types of gypseous soils: one with moderate gypsum content from Karbala city (G1) and the other w...

The importance of the buried pipelines lies in two main topics: the first is related to the very long length of these pipes, and therefore protecting them is expensive. The second topic is related to environmental pollution due to leaching, which is considered one of the main pollutants of groundwater. The research reviews the effects of geosynt...

The purpose of this study is to determine whether or not unsaturated gypseous soil can function well as a substrate for the foundations of carrying loads. A comprehensive program of testing was carried out with the objective of validating the geotechnical parameters and behavior of the unsaturated gypseous soils. The testing program included specif...

Polymeric materials are now being used in soil stabilization because they are available and free of dangerous, non-toxic, environmentally friendly materials. In this study, polyacrylamides, a white powdery substance that is tasteless and odorless, non-toxic, and characterized by high water absorption properties as it works to attract soil particles...

In recent years, there has been a serious request for innovative, accurate approaches to be determined and controlled for dam failures. The present study aims to explore and evaluate the flood wave parameters that result from a dam break due to piping failure occurring in the body of the dam and routing the flood waves. Mosul Dam, which lies in the...

In recent years, there has been a serious request for innovative, accurate approaches to be determined and controlled for dam failures. The present study aims to explore and evaluate the flood wave parameters that result from a dam break due to piping failure occurring in the body of the dam and routing the flood waves. Mosul Dam, which lies in the...

Shallow foundations are usually built above the groundwater table. In such cases, this soil is considered dry in analysis and design, while it is actually an unsaturated soil. This unsaturated soil can lead to many geotechnical issues, such as swelling when wet and collapsing when dry. It can also change the soil's shear strength, which in turn aff...

It is known to researchers in the field of road construction and development. Three types of pavement are rigid, flexible, and composite paving. The composite pavement consists of a layer of flexible pavement on top of which a layer of rigid pavement is placed or vice versa. All of these types have advantages in addition to disadvantages that affec...

In order to satisfy the requirements of environmentally friendly construction projects and minimize greenhouse gas emissions, it was necessary to focus on utilizing nanomaterials instead of conventional materials to enhance clay soils; nano Magnesium Oxide was suggested for this study. The compression and unconfined compressive strength tests were...

Reclaimed asphalt pavement (RAP) is considered one of the valuable alternatives to raw materials due to reducing the need to use raw materials, which are less in some world regions. It additionally reduces the highly-priced new bitumen required inside the asphaltic mixture manufacturing and contributes to the preservation of natural resources. To a...

In this research, an experimental investigation to examine the behavior of piled-raft foundations in loose sand is introduced. A small-scale model was tested in a sandy soil container. Three sensors were fabricated on the pile heads to record the axial load induced by any pile in the group, and the foundation’s settlement was also measured. In addi...