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Performance Enhancement Of Pv Panels By A Channel Shaped Heat Exchanger With An Electromechanical Control, Hussein Idan, Hatam Kadhom, Sahar Faraj Mar 2026

Performance Enhancement Of Pv Panels By A Channel Shaped Heat Exchanger With An Electromechanical Control, Hussein Idan, Hatam Kadhom, Sahar Faraj

Engineering and Technology Journal

Photovoltaic panels are considered one of the important practical applications in converting solar energy into electrical energy, but they suffer from the effect of heat associated with solar radiation. Therefore, much research has been done to either harness the heat that comes with it or eliminate it by cooling the panel and boosting its effectiveness. In this work, a cooling box was designed and manufactured locally (the passage design is new) that is attached to the back wall as part of the panel without inserting an absorbent portion between it and the water to cool the panel. The new model …

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The Influence Of Micro Channel On The Performance Of Low Concentrator Parabolic Collector Systems With Phase Change Material, Jenan Hamdi, Jalal Jalil, Ahmed Reja Mar 2026

The Influence Of Micro Channel On The Performance Of Low Concentrator Parabolic Collector Systems With Phase Change Material, Jenan Hamdi, Jalal Jalil, Ahmed Reja

Engineering and Technology Journal

Increasing global economic development leads to a continuous increase in energy demand, considering the limited conventional resources of energy as well as the impact on the environment associated with its use. The primary disadvantage of solar energy is that it is only accessible during the day. Thermal energy storage systems can overlook this flaw since they can store energy throughout the day for use at night. This paper presents a new cooling technique for low-concentration parabolic collectors with microchannel and Phase Change Material (PCM). A test model consisting of a parabolic concentrator was designed and fabricated to test the parabolic …

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Switching Mechanism Of Dynamic Hybrid Control Multi-Agent System In Manufacturing Environment, Dhuha Ismayyir, Lamyaa Dawood, Mohanned Al-Khafaji Mar 2026

Switching Mechanism Of Dynamic Hybrid Control Multi-Agent System In Manufacturing Environment, Dhuha Ismayyir, Lamyaa Dawood, Mohanned Al-Khafaji

Engineering and Technology Journal

Current expectations demand that manufacturing control systems exhibit enhanced flexibility and agility. Concurrently, using a multi-agent manufacturing system has been regarded as a crucial strategy for addressing the challenges associated with dynamics and unpredictability within the setting of part processing. This paper presents a novel switching mechanism for a hybrid control multi-agent system. The proposed hybrid control model combines the benefits of semi-heterarchical and hierarchical structures, enabling the successful implementation of adaptive control strategies. The aim is to enhance the implementation of a multi-agent control system in a dynamic manufacturing environment. This study checks how well the suggested switching mechanism …

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Investigation Of White Layer Thickness, Material Removal Rate, And Tool Wear Rate Of Inconel 718 By Nano-Al2o3-Mixed Electrical Discharge Machining, Dunya Ghulam, Abbas Ibrahim Mar 2026

Investigation Of White Layer Thickness, Material Removal Rate, And Tool Wear Rate Of Inconel 718 By Nano-Al2o3-Mixed Electrical Discharge Machining, Dunya Ghulam, Abbas Ibrahim

Engineering and Technology Journal

Nano powder mixed electrical discharge machining (NPMEDM) is an advanced thermo-physical process. It is used to create complex, precise shapes in hard-to-machine materials, such as nickel-based alloys like Inconel 718, due to their mechanical properties. This study introduces magnetic field assistance to improve the discharge state. Nano aluminum oxide was added to biodegradable soybean oil, serving as the insulating fluid to machine Inconel 718 alloy. The study examined the impact of machining parameters, including current, pulse on time, powder concentration, and magnetic field assistance, on outcomes like white layer thickness, material removal rate, and tool wear rate. Minitab software facilitated …

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Production Of Copper Nanoparticles Using Alpha-Amylase Enzyme By An Electrochemical Deposition Method, Neamah Hadi, Mohammad Hafiz, F. Sayyid, Wan Wan Isahak Mar 2026

Production Of Copper Nanoparticles Using Alpha-Amylase Enzyme By An Electrochemical Deposition Method, Neamah Hadi, Mohammad Hafiz, F. Sayyid, Wan Wan Isahak

Engineering and Technology Journal

This study aims to explain the effect of adding the bioactive substance (alpha enzyme) to the electrolyte solution using electrochemical deposition. Through which copper nanoparticles are manufactured, the originality of the research lies in the presence of this addition as a new method in manufacturing nanoparticles in an electrochemical manner, as the alpha-amylase enzyme is extracted from camel saliva, and the product has been diagnosed using (EDX) and scanning electron microscope (FE-SEM) techniques. , Dynamic Light Scattering (DLS) technology, and Zeta potential. The proposed method is an easy, inexpensive, and environmentally friendly method where the alpha enzyme was used as …

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Effect Of Mxene Ti3c2 On The Pvdf Ultrafiltration Membrane Properties And Performance, Tamara Abood, Kadium Shabeeb, Aseel Alzubaydi, Qusay Alsalhy, Pei Goh, Ahmad Ismail, Adel Zrelli Mar 2026

Effect Of Mxene Ti3c2 On The Pvdf Ultrafiltration Membrane Properties And Performance, Tamara Abood, Kadium Shabeeb, Aseel Alzubaydi, Qusay Alsalhy, Pei Goh, Ahmad Ismail, Adel Zrelli

Engineering and Technology Journal

The problem of membrane fouling remains a significant concern in ultrafiltration, a commonly employed method in water treatment due to its high efficacy and minimal energy consumption. This study made a nanocomposite ultrafiltration membrane out of MXene Ti3C2 nanosheets, a new two-dimensional material, to improve the antifouling properties of PVDF membranes. It was possible to incorporate the nanosheets into the membrane structure through in situ embedment during the phase inversion process. To learn more about them, the study investigated the membranes using FESEM, FTIR, water contact angle (CA), and porosity measurements. The application of common flux and rejection tests assessed …

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Innovative Self-Healing Concrete Using Polycarboxylate Ether: A Fused Deposition Modeling Approach With 3d-Printed Polylactic Acid Vascular Networks, Noor Hameed, Alaa Abdul-Hamead, Farhad Othman Mar 2026

Innovative Self-Healing Concrete Using Polycarboxylate Ether: A Fused Deposition Modeling Approach With 3d-Printed Polylactic Acid Vascular Networks, Noor Hameed, Alaa Abdul-Hamead, Farhad Othman

Engineering and Technology Journal

Concrete's fracture susceptibility is due to its limited tensile strength, which can lead to cracks. Steel reinforcement is added to designated areas to address this issue, but minuscule cracks can allow liquids and vapors to infiltrate the reinforcing material, causing corrosion. Self-healing concrete can resist corrosion by mending and sealing minor cracks. This study aims to determine if fused deposition modeling (FDM) can fabricate innovative vascular networks and tubes from polylactic acid (PLA) created by using three-dimensional (3D) printing methods, and its characteristics were contrasted with those of two- and one-dimensional (2D) networks.The dimensions of the internal and exterior diameters …

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Optimization Of Mechanical And Biocompatible Properties Of Znos-Fiber Membranes, Dalia Jomaa, Abbas Hussein, Jamal Dawood Mar 2026

Optimization Of Mechanical And Biocompatible Properties Of Znos-Fiber Membranes, Dalia Jomaa, Abbas Hussein, Jamal Dawood

Engineering and Technology Journal

This study uses electro-spinning techniques to create a poly(vinyl alcohol)-chitosan-zinc oxide nanoparticles (PVA+CS)+ZnO NPs system in three concentrations of ZnO for application as composite nanofibers for wound treatment applications and   Employing the Taguchi technique to optimize the mechanical characteristics via a four-level experimental design process (L16). Numerous techniques have been utilized to characterize the nanofibrous scaffolds: contact angle measurement, cytotoxicity testing, proliferation testing, evaluation of antimicrobial activity, Fourier Transform Infrared Spectroscopy (FTIR), Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersion X-ray Spectroscopy (EDX), and a comparative experimental study involving the determination of hardness using the Nanoindentation method for (PVA+CS)+ZnO. The …

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Mxene (Ti C Tx) Based Nanosheet Photocatalysts For Water Remediation: Challenges And Recent Developments, Hadeel Abbas, Khalid Abbas, Ahmed Al-Ghaban Mar 2026

Mxene (Ti C Tx) Based Nanosheet Photocatalysts For Water Remediation: Challenges And Recent Developments, Hadeel Abbas, Khalid Abbas, Ahmed Al-Ghaban

Engineering and Technology Journal

Two-dimensional nano structural compounds are attracting the focus of researchers worldwide. The need to treat wastewater and prevent the release of hazardous substances into the environment has increased because of growing environmental awareness. New compounds, most of which are not biodegradable, have emerged due to rising consumer expectations. Due to their distinctive chemical and physical characteristics, MXene has lately been recognized as an exciting option. The strong hydrophilicity of MXene makes them a promising candidate for environmental remediation methods like photocatalysis, natural chemical nature, and powerful electrochemistry—adsorption, membrane separation, and electrocatalytic sensors for identifying pollution. MXene has strong surface functional …

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Effect Of Carbonization On The Mechanical Properties Of Mild Steel Utilizing Oak Charcoal As A Carbon Source, Omer Mahmood Mar 2026

Effect Of Carbonization On The Mechanical Properties Of Mild Steel Utilizing Oak Charcoal As A Carbon Source, Omer Mahmood

Engineering and Technology Journal

Carburizing is a process that improves the mechanical properties of low-carbon steel, particularly its surface hardness. Introducing carbon into the steel's surface enhances the creation of a durable and resistant outer layer.  The technique is especially useful for low-carbon steel because it cannot be hardened by quenching and tempering. This work investigates the effects of solid carburizing on the mechanical properties of mild steel. Oak charcoal was used as a carbon source due to its local availability and low cost. The study examined how solid carburization affects the microstructure and mechanical characteristics of mild steel. Mild steel samples were carburized …

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Microwave Dielectric Properties Of Zn1-Xcuxwo4 (X= 0, 0.03)/Polymer Composites, Lamees Faeq, Saad Farid, Fadhel Hashim Mar 2026

Microwave Dielectric Properties Of Zn1-Xcuxwo4 (X= 0, 0.03)/Polymer Composites, Lamees Faeq, Saad Farid, Fadhel Hashim

Engineering and Technology Journal

The rapid growth in wireless telecommunication systems has spurred a strong interest in lightweight, compact, and cost-effective materials. One promising solution for achieving these characteristics is using polymer matrix ceramic-reinforced composites. In this context, complex oxide materials, specifically Zn1-xCuxWO4 (where x=0 and x=0.03), were used to reinforce three different polymer matrices: epoxy, polyurethane, and silicone rubber. The primary objective was to create composites with low loss factors and high dielectric constants, essential qualities for telecommunications systems. To create the complex oxides, the solid-state reaction method was employed. In particular, the X-ray diffraction (XRD) analysis confirmed that Zn0.97Cu0.03WO4 exhibited a monoclinic …

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Experimental And Optimization Study Of Powder Metallurgy Process Parameters Of Magnesium Base Az31 Alloy Using Taguchi Method, Basma Sultan, Muna Abbass, Jawdat Yagoob, Yang Guo Mar 2026

Experimental And Optimization Study Of Powder Metallurgy Process Parameters Of Magnesium Base Az31 Alloy Using Taguchi Method, Basma Sultan, Muna Abbass, Jawdat Yagoob, Yang Guo

Engineering and Technology Journal

Powder metallurgy (PM) is a highly effective re-processing method mostly used for magnesium-base alloys, especially in high-performance Mg alloys. In the present work, the experimental and optimization of PM process parameters, including compaction pressure, sintering temperature, and sintering time, for AZ31 magnesium alloy have been investigated using Taguchi Design of Experiment (DOE) and ANOVA method. The regression equation for obtaining density, porosity, and hardness of AZ31 Mg alloy has been formulated and experimentally validated. Three parameters are dependent in the current work, 450, 550, and 600 MPa compaction pressure, 455, 520, and 585ºC sintering temperature, and 30, 60, and 90 …

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Design And Manufacturing Of Custom 3d Printed Bone Implants, Zaineb Neamah, Luma Al-Kindi, Ghassan Al-Kindi Mar 2026

Design And Manufacturing Of Custom 3d Printed Bone Implants, Zaineb Neamah, Luma Al-Kindi, Ghassan Al-Kindi

Engineering and Technology Journal

In medical surgery, a customized implant is often required to meet surgical requirements, especially in cases with complicated or traumatic deformities. The emerging techniques of additive manufacturing, e.g., 3D printing, may help provide a quick response to such needs, provided that a valid approach capturing required implant shape data is generated and processed to better suit 3D printing. Different materials, including biocompatible polymer and metal, may suit medical-surgical applications. In this paper, an investigation is conducted to assess 3D printing technology use as part of a full system, from capturing implant shape data to producing the customized implant. The investigation …

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Antibacterial Improvement With Multilayer Of Bio-Composite Coatings Produced By Electrophoretic Deposition, Noor Al-Ali, Makarim Abdulkareem, Iman Anoon Mar 2026

Antibacterial Improvement With Multilayer Of Bio-Composite Coatings Produced By Electrophoretic Deposition, Noor Al-Ali, Makarim Abdulkareem, Iman Anoon

Engineering and Technology Journal

In this study, multi-structured coatings of biocompatible and antibacterial materials on a 316L stainless steel (SS) implant have been electrophoretically deposited for orthopedic applications. Two layers of composite coatings have been deposited; the first layer of composite coating biopolymer layer consists of (chitosan with Gelatin) and the second composite coating layer of bio-ceramic comprises Hydroxyapatite with chitosan. The first layer was deposited at (3 g/L concentration of Gelatin, 20 voltage, and 3 min and 0.5 g/L chitosan) parameters, and the second layer was deposited at (6 g/L, 40 voltage, 1 min, and 0.5 g/L chitosan) parameters. In this study, the …

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Cold Sintering Process Of Hydroxyapatite Derived From Natural Bone And Co-Precipitation Method: A Comparative Study, Hawraa Abbas, Hanaa Smeig, Zuhair Abdul Ameer Mar 2026

Cold Sintering Process Of Hydroxyapatite Derived From Natural Bone And Co-Precipitation Method: A Comparative Study, Hawraa Abbas, Hanaa Smeig, Zuhair Abdul Ameer

Engineering and Technology Journal

This study uses a novel sintering technique at very low temperatures (below 300°C) named the Cold Sintering Process to produce highly dense Hydroxyapatite (HA) samples. Nano hydroxyapatite was prepared using two different methods: Synthesis by chemical precipitation method (HA1) and natural source from Boven bone (HA2). The samples are characterized using scanning electron microscope (SEM), X-ray energy dispersive spectrometry (EDS), X-ray diffractogram (XRD), transition electron microscope (TEM), Fourier transform infrared spectrometry (FTIR) and Nuclear magnetic resonance spectroscopy (NMR). Also, physical and mechanical properties measurements were detected, including density and hardness. The results indicated that cold sintering could result in Hydroxyapatite …

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Experimental And Multi-Optimization Investigation Of Machining (X210) Alloy Steel Using Angled Edm Electrodes, Ahmed Abbas, Ali Khleif Mar 2026

Experimental And Multi-Optimization Investigation Of Machining (X210) Alloy Steel Using Angled Edm Electrodes, Ahmed Abbas, Ali Khleif

Engineering and Technology Journal

Electrical Discharging Machining (EDM) offers broad capabilities that allow it to be used in the manufacturing, automotive, and aviation industries, as well as practically all disciplines of conductive material machining. This experimental and numerical work aims to use EDM to evaluate the surface of Alloy Steel (X210). The experiments used the EDM copper electrode with a novel horizontal flushing hole. The findings of the investigations have been analyzed so that the best settings for the input process factors can be determined. Alloy tool steel (X210) is cut in dimensions by the Wire EDM (dk7740) (15 × 15 × 10 mm) …

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The Impact Of Magnetic Abrasive Finishing (Maf) Process Parameters On The Microhardness Of Stainless Steel Sus420 Bubble Cups, Athraa Ahmed, Saad Shather Mar 2026

The Impact Of Magnetic Abrasive Finishing (Maf) Process Parameters On The Microhardness Of Stainless Steel Sus420 Bubble Cups, Athraa Ahmed, Saad Shather

Engineering and Technology Journal

The optimal performance of bubble cups relies on achieving the appropriate surface quality, a common requirement in various industrial applications. The effectiveness of the Magnetic Abrasive Finishing (MAF) process depends on several factors, including the brush's flexibility, that vary across tools. This study investigates the influence of five key parameters, voltage, finishing time, gap distance, rotating speed, and particle size, on microhardness (MH). Experimental work was based on Taguchi design with L27 trials in Minitab 17, involving five variables with three levels for each. The impact of these parameters on microhardness for stainless steel SUS420 bubble cups is assessed using …

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Assessing The Influence Of Climate Change On Sediment Dynamics In The Proposed Makhool Dam Reservoir, Iraq, Nisreen Rasheed, Mahmoud Al-Khafaji, Imzahim Alwan Mar 2026

Assessing The Influence Of Climate Change On Sediment Dynamics In The Proposed Makhool Dam Reservoir, Iraq, Nisreen Rasheed, Mahmoud Al-Khafaji, Imzahim Alwan

Engineering and Technology Journal

Makhool Dam is a proposed structure on the Tigris River in the Salah al-Din Governorate, northwest of Baiji. The reservoir's sediment sources encompass the Tigris River, the Greater Zab River, and the Lesser Zab River. Climate change exerts a significant influence on both sediment accumulation within the dam reservoir and associated water resources. This paper specifically investigates the impact of climate change on sediment dynamics within the Makhool Dam reservoir. HEC-RAS 6.3.1 has been used to simulate the sediment dynamics and flow for the three rivers entering the reservoir. The SSP2-4.5 and SSP5-8.5 emission scenarios were applied to the 2021-2040, …

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Dynamic Displacement Of Sheet Pile Walls Adjacent To The Railway Track, Kather Naji, Mohammed Al-Neami, Mahmood Mahmood Mar 2026

Dynamic Displacement Of Sheet Pile Walls Adjacent To The Railway Track, Kather Naji, Mohammed Al-Neami, Mahmood Mahmood

Engineering and Technology Journal

Due to the scarcity of experimental laboratory research on the effect of repetitive stress resulting from the railway on retaining walls, this study presents an investigation of an experimental laboratory model to study the effect of repetitive loads resulting from the railway on the adjacent retaining wall through several factors. The results of an experimental investigation of horizontal displacements of steel sheet pile walls behind excavations in the sand adjacent to railway tracks are presented. A series of model tests have been carried out in which the effect of sand density, horizontal distance between the railway and the sheet wall, …

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Design Of Waste Stabilisation Ponds For Municipal Effluent Treatment In Sobi Cantonment, Ilorin, Nigeria, Francis Ogbozige Mar 2026

Design Of Waste Stabilisation Ponds For Municipal Effluent Treatment In Sobi Cantonment, Ilorin, Nigeria, Francis Ogbozige

Engineering and Technology Journal

The generation of wastewater or effluent is unavoidable as long as humans exist, and it could cause potential danger if not properly managed. One way to manage it is by ensuring proper treatment before discharging into rivers, streams, and creeks. This will not just protect human health but will also protect aquatic fauna and flora. Thus, this research applied scientific and engineering principles to design a waste stabilization pond (WSP) to treat municipal effluent generated in a large military community (Sobi Cantonment), which currently lacks a wastewater treatment plant. The research revealed that the WSP will comprise two anaerobic ponds, …

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Comparison Of Locally Manufactured Composite Tile Adhesive Using Waste Material With Imported Tile Adhesive, Samer Turki, Sarmad Ibrahim, Mohammed Al Maamori Mar 2026

Comparison Of Locally Manufactured Composite Tile Adhesive Using Waste Material With Imported Tile Adhesive, Samer Turki, Sarmad Ibrahim, Mohammed Al Maamori

Engineering and Technology Journal

One of the most important construction activities worldwide is the construction using autoclaved aerated concrete units at the global level is increasing significantly and the use of these units leads to the consumption of large amounts of resources and causes large residues waste, which leads to great damage to the environment and significant economic losses for companies and people. In recent periods, a noticeable increase has been observed in the manufacture of building units in Iraq. Iraqi factories have been affected by the waste resulting from manufacturing processes. The main objective of the study is to utilize tons of waste …

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Evaluating Land Use Land Cover Classification Based On Machine Learning Algorithms, Basheer Jasim, Oday Jasim, Amjed Al-Hameedawi Mar 2026

Evaluating Land Use Land Cover Classification Based On Machine Learning Algorithms, Basheer Jasim, Oday Jasim, Amjed Al-Hameedawi

Engineering and Technology Journal

Image classification depends substantially on the remote sensing method to generate maps of land use and land cover. This study used machine learning algorithms for classifying land cover, evaluating algorithms, and choosing the best way based on accuracy assessment matrices for land cover classifications. Satellite images from the Landsat by the United States Geological Survey (USGS) were used to classify the Babylon Governorate Land Use Land Cover (LULC). This study employed multispectral satellite images utilizing a spatial resolution of 30 meters and organized the data using three different algorithms to see the most accuracy. The process of categorization was carried …

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Evaluating The Structural Performance Of Waste Pet-Infused Interlocking Units Versus Traditional Stone Masonry, Omogbolade Adepitan, Ayotunde Fasina Mar 2026

Evaluating The Structural Performance Of Waste Pet-Infused Interlocking Units Versus Traditional Stone Masonry, Omogbolade Adepitan, Ayotunde Fasina

Engineering and Technology Journal

This study focuses on PET waste reduction worldwide by looking at the application of these polymeric materials in the construction and building industries. An effective application of PET wastes will reduce PET pollution, especially in water bodies. Due to its rising cost, it can partially replace the conventional binder used (cement).Bricks were made in the conventional cement-sand and PET-sand, and a total of 72 cubes were produced for different mix ratios of 1:1, 1.5:1, and 2:1. Their properties like particle size analysis, water absorption, slump testing, and compressive strength were investigated and compared.The particle size analysis showed that the sand …

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Performance Of Potato Starch Admixture On Fresh And Hardened Behaviours Of Concrete At Varied Mix Design Ratios, Chidobere Nwa-David Mar 2026

Performance Of Potato Starch Admixture On Fresh And Hardened Behaviours Of Concrete At Varied Mix Design Ratios, Chidobere Nwa-David

Engineering and Technology Journal

The urgency to attenuate techno-economic and ecological threats constituted by chemical admixtures has necessitated the adoption of feasible natural admixtures. The chemical interaction of admixtures with concrete ingredients affects concrete's plastic and hardened structure. The impact of concrete properties on construction works is of great concern to engineers as it plays a vital role towards viable infrastructural development. This study focused on developing an eco-friendly, sustainable structural concrete using potato starch (PS) as an admixture. PS has been included to in concrete in discrete percentages (0%, 0.4%, 0.8%, 1.2%, 1.6%, 2.0%) of cement weight employing mix ratios of 1: 1.5: …

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Drought Forecasting Model For Future Climate Change Effects In A Regional Catchment Area In Northern Iraq, Nasser Muhaisen, Thair Khayyun, Mustafa Al-Mukhtar Mar 2026

Drought Forecasting Model For Future Climate Change Effects In A Regional Catchment Area In Northern Iraq, Nasser Muhaisen, Thair Khayyun, Mustafa Al-Mukhtar

Engineering and Technology Journal

Climate change plays a crucial role in shaping the hydrological dynamics of rivers owing to its immediate implications on the driving meteorological parameters. Therefore, Understanding climate change and its implications is essential for sustainable water resource management. This study aims to assess the extent of climate change and its effects on streamflow in the Mosul Dam watershed Under three global warming Representative Concentration Pathways scenarios (i.e., 2.6, 4.5, and 8.5) based on mean climate data extracted from four Global Circulation Models (i.e., Beijing Climate Center, China, Commonwealth Scientific and Industrial Research Organization, Australia, Met Office Hadley Center, United Kingdom, and …

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Strain Capacity And Flexural Strength Behavior Of Bendable Concrete Produced With Different Polymeric Fibers, Ikram Al-Mulla, Tareq Al-Attar, Abbas Al-Ameeri, Ammar Al-Rihimy Mar 2026

Strain Capacity And Flexural Strength Behavior Of Bendable Concrete Produced With Different Polymeric Fibers, Ikram Al-Mulla, Tareq Al-Attar, Abbas Al-Ameeri, Ammar Al-Rihimy

Engineering and Technology Journal

The incorporation of fibers into engineered cementitious composite concrete imparts flexibility to the material. Therefore, using different types and contents of polymeric fibers would affect the behavior of such concrete types, and it is worth contemplating. The present research aims to study the flexural strength and the strain capacity of engineered cementitious composite concrete produced with polyvinyl alcohol fibers (PVA) and polypropylene fibers (PP) with different volume fractions (1%, 1.5%, and 2%). Six mixes of engineered cementitious composite concrete of three grades of strengths, 30, 45, and 60 MPa, were produced. Results revealed that mixes of 60 MPa with 2% …

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Life Cycle Economic Comparison Between Rigid And Flexible Pavement: A Case Study For The Construction Of Wajen- Garin Barkamawa-Dugurawa Road In Kano State Nigeria, Rowland Adewumi, Wasiu Sulaiman, Adeniyi Shola Mar 2026

Life Cycle Economic Comparison Between Rigid And Flexible Pavement: A Case Study For The Construction Of Wajen- Garin Barkamawa-Dugurawa Road In Kano State Nigeria, Rowland Adewumi, Wasiu Sulaiman, Adeniyi Shola

Engineering and Technology Journal

Flexible pavements may be strengthened and enhanced incrementally to meet traffic needs, making them preferable to cement concrete roadways. Due to the rise of poor-quality bituminous pavements, Nigeria is promoting concrete pavements. Concrete pavements are becoming more popular because of their durability and ability to withstand heavy traffic and harsh environmental conditions. The primary objective of this study is to provide a comprehensive comparative analysis of both flexible and rigid pavement suitability, considering various parameters such as material characteristics, load-bearing capacity, longevity, and cost-effectiveness. The pavement structure used for the project meets the Federal Ministry of Works Highway Manual Part …

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Manufacturing Of Sustainable Ultra-High-Performance Concrete Using Response Surface Methods, Abbas Mohammed, Maan Hassan, Hussein Al-Quraishi Mar 2026

Manufacturing Of Sustainable Ultra-High-Performance Concrete Using Response Surface Methods, Abbas Mohammed, Maan Hassan, Hussein Al-Quraishi

Engineering and Technology Journal

Quartz powder is used in ultra-high-performance concrete to improve granular packing, but repeated inhalation during manufacture can cause health issues. The mechanical properties of UHPC are influenced by the post-setting curing method. A hypothesis suggests limestone powder could be a viable filler to mitigate these issues under three different curing regimes, replacing quartz powder of similar size. The study assessed 18 mixtures with different w/b ratios for flow characteristics and compressive strength after 7 and 28 days of curing under various conditions. Limestone powder positively impacted compressive strength and had fresh properties. A two-factor interaction model accurately correlated variables and …

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Effect Of Structure Height On Seismic Response Of Adjacent Structures Considering Soil-Structure Interaction, Mohammed Abdulaziz, Mohammed Hamood, Mohammed Fattah Mar 2026

Effect Of Structure Height On Seismic Response Of Adjacent Structures Considering Soil-Structure Interaction, Mohammed Abdulaziz, Mohammed Hamood, Mohammed Fattah

Engineering and Technology Journal

Seismic activity has emerged as a mostly attractive issue for researchers and engineers, particularly in light of the recent occurrence of severe earthquakes worldwide, such as those felt in Turkey and Syria. Most entities prone to seismic damage are the structures. Any type of structure consists of a composite system involving structure, foundation, and soil. Previously, numerical and analytical methods for dynamic seismic analysis of structures ignored the impact of this system during earthquakes. In other words, soil-structure interaction (SSI) was ignored. Moreover, another important factor that was not considered is the interaction between structures and soil, or what is …

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Modifying The Strength Of Soft Soils Via Heating And Cement Grouting Method, Ali Shareef, Mohammed Al- Neami, Falah Rahil Mar 2026

Modifying The Strength Of Soft Soils Via Heating And Cement Grouting Method, Ali Shareef, Mohammed Al- Neami, Falah Rahil

Engineering and Technology Journal

Soft clayey soils present geotechnical engineering challenges with significant stability and settlement. Various methods are employed to enhance the geotechnical properties of these soils. Heating and grouting are the methods used to improve such soil. A new heating and cement grouting system using gas as a source of heating through boreholes and Portland cement for grouting was designed and manufactured to enhance the soft soil. Different parameters were investigated, including the shear strength and the angle of internal friction, as well as the water/cement ratio, W/C (0.5, 0.75, 1, 1.25, 1.5, and 1.75), and the period of curing (3, 14, …

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