
Ali MajdiAl-Mustaqbal University · Building and Construction Techniques Engineering Department
Ali Majdi
Doctor of Engineering
work at Al- Mustaqbal University.
Researches in Sustainable Development and Civil Engineering
About
169
Publications
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2,546
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Introduction
Sustainable development goals, Environmental engineering, civil engineering
Publications
Publications (169)
This study addresses the research gap in understanding the durability aspects and microstructure properties of steel slag (SS) concrete. A series of different experimental results, including porosity, water absorption, pulse velocity, carbonation depth, chloride penetration, alkali–silica reaction, acid attacks, and shrinkage, were summarized to as...
Amidst the dual challenges of aggregate scarcity and the environmental impact of carbon dioxide (CO2) emissions from cement production, this study investigates the viability of palm oil clinker (POC) as a sustainable aggregate in geopolymer concrete (GPC). The lack of appropriate alternative coarse and fine aggregates essential in concrete producti...
The pushover method is often used instead of the nonlinear time history (NTH) method for analyzing base-isolated structures due to its simplicity. However, pushover analysis cannot account for reversible earthquake effects on structural damage. An alternative fast method is the endurance time (ET) method, which has fewer limitations in considering...
Interest in biodiesel as a diesel fuel substitute has increased due to the growing need for sustainable energy sources. The blends of biodiesel, such B20, have become more popular because they can lessen the need for fossil fuels and greenhouse gas emissions. The blends of biodiesel, however, may pose problems with emissions, performance, and combu...
This work adopted response surface methodology (RSM) to analyze the behavior of a nanofluid based on propylene glycol. The laboratory conditions in this investigation involve a temperature range of 40°C–120°C and a weight percentage that varies from 0% to 0.5%. Initially viscosity was predicted using Redwood viscometer using the nanofluid solutions...
Determining the impact of pulse-type earthquake characteristics on the vulnerability of base-isolated buildings under non-pounding conditions has yielded conflicting results in previous studies. Moreover, this issue has received less attention for pounding conditions, especially floor-to-floor pounding. Therefore, this study aims to investigate the...
This study examines the impact of the size and wt.% of reinforcement particles on the wear characteristics of Al2021 alloy composites. Composites of Al2021 reinforced with B4C particles of varied sizes (45 and 90 microns) were synthesised utilising a unique two-stage stir cast technique. The composites were primed with B4Cc content of 5 and 10 wt.%...
Limited research on the pounding of adjacent isolated buildings (floor-to-floor pounding) and conflicting results about the effect of ductility on pounding severity highlight the need for further investigation. Therefore, this study aims to investigate the impact of superstructure flexibility and isolator characteristics on pounding severity and se...
Stepped weirs are used in a wide range of applications, designed to increase energy dissipation. In this study, laboratory experiments were conducted in a flume on six stepped weir models, with a downstream angle of θ = 26.6°. The physical models used were on a scale of 10:1, and tests of discharges up to 0.055 m ³ /s were carried out. Several step...
In this research, the superstructure behavior in isolated structures has been studied based on their ductility. For this purpose, three tall structures isolated by triple friction pendulum isolators (TFPI) have been designed. The ductility of superstructures is different due to their different seismic force-resisting systems. The performance of the...
A hybrid beam composed of ultra-high performance concrete (UHPC) and normal strength concrete (NSC), is experimentally evaluated. The layout optimizes cost and performance by placing the UHPC full-depth section at mid-span of the hybrid beam. The length of the UHPC section compared to the span length (Lu/L) as well as the angle between the UHPC and...
Beam–column joints play an important role in resisting lateral loads induced by earthquakes. Previous post-earthquake reports have indicated that the failure of beam–column joints was a primary cause of the collapse of numerous existing reinforced concrete structures, even when designed in accordance with seismic building code requirements. This st...
Design codes contain special provisions for anchorage lengths of flexural reinforcement and amount of transverse reinforcement in beam-column joints, to safeguard against joint failure and possible structural collapse. How- ever, those stipulations could lead to congested joints with construction problems such as segregation. This study leverages e...
The utilization of agricultural waste in concrete has gained important attention owing to its potential to improve sustainability and reduce environmental impact. Palm oil fuel ash (POFA), a by-product of the palm oil industry, is one of the agricultural waste materials that has shown promise as a supplementary cementitious material (SCM) in geopol...
A new logistic model tree (LMT) model is developed to predict slope stability status based on an updated database including 627 slope stability cases with input parameters of unit weight, cohesion, angle of internal friction, slope angle, slope height and pore pressure ratio. The performance of the LMT model was assessed using statistical metrics,...
Electrode materials with appropriate mechanical, electronic and structural attributes are prerequisites for next generation renewable energy technology. An essential stage in development of batteries to achieve superior performance is selecting an appropriate anode material. In this research, application of B3S monolayer for anode materials has bee...
The shortage of safe drinking water is among the issues that the globe is experiencing more and more. One of the best options for remote locations lacking in civilian infrastructure is solar stills. The primary goal of the current study was to determine how using different designs of longitudinal and square baffles in the basin of the cords pyramid...
The Ni and Co doping effect on the ciclopirox (CPX) drug delivery performance of a ZnO nanosheet (ZnO-NS) was investigated theoretically. Doping Ni and Co metals into the ZnO-NS increased the adsorption energy of CPX from -7.9 to -27.4 and -31.7 kcal/mol, respectively. The CPX adsorption reduced the ZnO-NS gap (Eg) from 3.81 to 3.46 eV, while th...
Methane (CH4) is a greenhouse gas resulting from human activities, especially landflls, and it has any potential environmental issues, such as its major role in global warming. On the other hand,methane can be converted to liquid fuel or electricity using chemical conversion or gas turbine generators. Therefore, reusing such gases could be of great...
Methane (CH 4) is a greenhouse gas resulting from human activities, especially landfills, and it has many potential environmental issues, such as its major role in global warming. On the other hand, methane can be converted to liquid fuel or electricity using chemical conversion or gas turbine generators. Therefore, reusing such gases could be of g...
The accumulation of waste materials in landfills without treatment threatens public health and the environment. The quantity of solid waste continually increases, causing environmental pollution. One of these wastes that should receive scientific treatment is concrete waste. The use of concrete waste as fine or coarse aggregate in self-compacting c...
Globally, the amount of solid waste is constantly increasing, and its disposal is one of the critical issues in recent research studies. Concrete waste includes the rubble of demolished buildings, whether old buildings or those that have been subjected to earthquakes, etc. This research project aims to improve sustainability in the construction ind...
The California bearing ratio (CBR) is one of the basic subgrade strength characterization properties in road pavement design for evaluating the bearing capacity of pavement subgrade materials. In this research, a new model based on the Gaussian process regression (GPR) computing technique was trained and developed to predict CBR value of hydrated l...
The utilization of solar and wind energy as alternatives to fossil fuels is gaining increasing significance in the quest for sustainable energy solutions. Hybrid systems, comprising multiple power generation units driven by diverse energy sources, offer enhanced reliability compared to single-source systems. Among these, photovoltaic-wind turbine h...
Seismic liquefaction has been reported in sandy soils as well as gravelly soils. Despite sandy soils, a comprehensive case history record is still lacking for developing empirical, semi-empirical, and soft computing models to predict this phenomenon in gravelly soils. This work compiles documentation from 234 case histories of gravelly soil liquefa...
This study evaluates the near surface mounted fiber-reinforced polymer (FRP) reinforcement technique for strengthening continuous reinforced concrete beams. A three-dimensional finite element model was developed and validated with a recent experimental study. The model incorporates robust features, including concrete nonlinear behavior, debonding a...
A well-known tool for assessing the quality of surface water is the water quality index (WQI) model. In this study, the WQI was generated to classify the water flowing in the Euphrates River in Qadisiyah Province. To develop analytical models, a connection between the findings and satellite images was developed. It is possible to determine what cat...
A well-known tool for assessing the quality of surface water is the water quality index (WQI) model. In this study, the WQI was generated to classify the water flowing in the Euphrates River in Qadisiyah Province. To develop analytical models, a connection between the findings and satellite images was developed. It is possible to determine what cat...
It is important to determine the limits of flow regimes in the design of stepped weirs because of the hydraulic performance of each regime. The present study investigates the effect of downstream slope and rock fill materials on flow regimes in gabion stepped weirs. Nine physical models of gabion weirs were used in the experiments. The models’ down...
An emerging retrofit technique for bridge decks and other structural members includes attaching field-cast or prefabricated overlays made of ultra-high performance concrete (UHPC). Several studies investigating plain and steel-reinforced UHPC overlays identified two common problems, large thickness leading to high costs and additional dead loads, a...
Pigment production plants are among the most polluting industries due to their high-water consumption and complex releases. The current work investigates the removal efficiency of sodium chloride (NaCl), sodium acetate (C 2 H 3 NaO 2), and acetic acid (CH 3 COOH), and also the permeate flux of a small-batch OPM-K membrane using reverse osmosis (RO)...
This study assessed the quality of water in the Shatt Al-Hillah River by adopting some variables of physical, chemical, and heavy metal elements. The samples have been taken at six sites along the river in 2020 (from January to December). The
water quality index has been determined by using the weighted-arithmetic method which is including a serie...
This study assessed the quality of water in the Shatt Al-Hillah River by adopting some variables of physical, chemical, and heavy metal elements. The samples have been taken at six sites along the river in 2020 (from January to December). The water quality index has been determined by using the weighted-arithmetic method which is including a series...
Anodic materials with fast kinetics and high capacity are prerequisites for improvement of calcium-ion batteries (CIBs). According to first-principles computations, unique calcium capacity was discovered for B3O3 monolayer. Based on findings, Ca atoms can be adsorbed on B3O3 surface, and the most stable location is the top of the pore center of B3O...
The aim of this study is to investigate the performance of isolated structures by considering the possibility of impact under severe earthquakes. In the design of isolated structures, the required displacement capacity is determined based on the considered earthquake hazard level. However, there is a possibility of an impact caused by moat walls or...
In this study, a hybrid strengthening technique consisting of ultra-high performance concrete (UHPC) overlay reinforced by fiber reinforced polymer (FRP) bars is proposed to strengthen reinforced concrete (RC) beams in shear. Eleven beams, five of which are physical samples tested under static load, and the other six are virtual ones derived from a...
Endurance time (ET) method is a novel Time History Analysis (THA) approach in which structures are subjected to a set of intensifying excitations called endurance time excitation functions (ETEF). Although various studies show the efficiency of the ET method for the seismic evaluation of fixed base structures, this method has been less employed...
The disposal of hazardous waste materials in landfills and open areas creates a severe impact on the environment. Silica Fume (SF), a by-product from the ferrosilicon and silicon industry, is generated in high quantities. Recent studies have highlighted the advantages of reusing SF to produce high-strength concrete (HSC) and ultra-high-performance...
Activated carbon obtained from red algae Gracilaria changii was used as an adsorbent to remove Pb (II) and Cu (II) from an aqueous solution. The raw red algae were first impregnated with phosphoric acid, followed by thermal activation. The Box–Behnken design was used to optimize the activation process. The optimum activation parameters were 84%, 65...
Activated carbon obtained from red algae Gracilaria changii was used as an adsorbent to remove Pb (II) and Cu (II) from an aqueous solution. The raw red algae were first impregnated with phosphoric acid, followed by thermal activation. The Box–Behnken design was used to optimize the activation process. The optimum activation parameters were 84%, 65...
Hot weather concreting is one of the most challenging problems that face concrete placement, due to thermal cracking and durability problems. Multiple methods have been used to control and reduce the placement temperature of fresh concrete. This study focused on the cooling effects of liquid nitrogen (LN) on hardened concrete properties, including...
Stockpiling and landfilling of waste glass (WG) is becoming a severe environmental issue around the World as hundreds of tons of WG are dumped on the land. The present research assesses the behavior of WG in a concrete mixture as a partial replacement of sand to attain the optimal percentage of waste glass. Due to the production of ordinary Portlan...
Population increase and building construction negatively affect the environment by generating high carbon
dioxide (CO2) concentrations. Meanwhile, the depletion of normal concrete materials, which are essential for
construction, requires urgent solutions. Researchers have attempted to obtain suitable sustainable materials to
replace traditional con...
In this study, the thermodynamic performance of a combined gas turbine system equipped with a tubular solid oxide fuel cell and hydrogen fuel was investigated. All components of the system were separately modeled using thermodynamic relations. The simulation results showed that the efficiency of the combined system decreased with an increase in the...
The dynamic of nutrient cycling is a critical factor in riparian regions. It is essential to understand the behaviour of riparian areas in the maintenance and management river ecosystem. Sediment load, nutrients, and pathogens are transported to water bodies through land drainage and riverside flow. The classification of environmental agencies was...
Recycling waste materials (WMs) is a cost-effective method for saving natural resources, protecting the environment, and reducing the use of high-carbon raw materials. This review aims to illustrate the impact of solid waste on the durability and microstructure of ultra-high performance concrete (UHPC) and to provide guidance for the research of ec...
A massive amount of water has been consumed to produce concrete. The lack of sufficient water for drinking and other essential processes reduces the quantity of water that should be delivered to the people because of the high water consumption by concrete production. All the waste from commercial buildings, households, institutions, and hospitals a...
Recently, the construction industry used innovative, cost-ecofriendly, and efficient materials in infrastructure development to mitigate the negative impact on the environment due to manufacturing Ordinary Portland cement (OPC). Many efforts have been conducted to improve sustainable materials to be used as cementitious material in pozzolanic mater...
The California Bearing Ratio (CBR) is one of the basic subgrade strength characterization properties in road pavement design. It can be measured and calculated in laboratory through conventional method which is laborious, tedious, time consuming, costly and requires special care during performance. A new model based on the Gaussian process regressi...
In the last decades, many research studies have been carried out into carbon-based nanostructures as electrode materials for supercapacitors. The current research study introduced a new carbon-based electrode by using a two-dimensional (2D) Fe-doped boron carbide monolayer (FBC3ML). The capacitance, electronic, energy and structural properties of t...
A hybrid machine learning method is proposed for wildfire susceptibility mapping. For modeling a geographical information system (GIS) database including 11 influencing factors and 262 fire locations from 2013 to 2018 is used for developing an integrated multivariate adaptive regression splines (MARS). The cat swarm optimization (CSO) algorithm tun...
Excess sludge production is one of the limitations of the biological activated sludge process. Therefore, the study's objective is to upgrade the MBBR process to an integrated fixed film-activated sludge (IFAS) process to reduce excess sludge production. Two scenarios were followed in this study to eliminate sludge production in the biological acti...
This article analyzes the forced and free vibrations of bi-directional functionally graded (BDFG) porous nanobeams under moving loads by considering the thickness effect based on the nonlocal strain gradient theory (NSGT). It is assumed that the material properties of the system are graded across the transverse and axial directions according to pow...
The creation of sustainable composites reinforced with natural fibers has recently drawn the interest of both industrial and academics. Basalt fiber (BF) stands out as the most intriguing among the natural fibers that may be utilized as reinforcement due to their characteristics. Numerous academics have conducted many tests on the strength, durabil...
The free flow of people and products within metropolitan areas depends on well-managed transportation systems. However, public parking places in smart cities are often limited by traffic, causing cars and residents to waste time, money, and fuel. To counteract this issue, today's automobile systems combine information fusion with intelligent parkin...
The proposed method of using Machine Learning in Motion Detection and Pedestrian Tracking-assisted Intelligent Video Surveillance Systems (ML-IVSS) can be seen as an application of intelligent fusion techniques. ML-IVSS combines the power of motion detection, pedestrian tracking, and machine learning to create a more accurate and efficient surveill...
Recently, the exploitation of renewable energies and technologies in order to reduce the restrictions of fossil fuels is the attention of energy managers and engineers. Additionally, energy production cycles based on solid oxide fuel cells (SOFCs) are known for their versatility in fuel intake. In this regard, in the current article the thermodynam...
Recently, solid oxide fuel cells (SOFCs) have been known as a popular technology due to their versatility in fuel intake, carbon-free process, and scalability in various applications. Besides that, the utilization of their exhaust heat in cascade cycles improves the process behavior by increasing the energy production rate. From the literature, gas...
A worldwide shortage of drinkable water has resulted from the rapid rise of industrialization and population, which has prompted researchers to find an alternative method to meet this requirement. Solar still are systems powered by solar energy that can provide drinkable water, however it has a low production issue. In this study a conventional sol...
The density functional theory computations were performed in order to investigate the impact of Cd-decoration upon the capability of an AlN nanotube (AlN-NT) in in detecting chloropicrin (CP). The interaction between the pure AlN-NT and CP was weak, with a sensing response (SR) of around 6.9. After the Cd atom was decorated onto the surface of AlN-...
Herein, the structural modification of triphenylamine (TPA) organic chromophores (P-I and P-II) by the substitution of electron donor (D) groups (replacing salicylic acid and inserting a π-linkage) was investigated for solar cell applications. TPA’s capability of donating and spacer significantly impact some features such as structure, absorption,...
Concrete mechanical properties could be improved through adding different materials at the mixing stage. Quarry dust (QD) is the waste produced by manufactured sand machines and comprise approximately 30–40% of the total quantity of QD generated. When it dries, it transforms into a fine dust that poses a tremendous hazard to the environment by cont...