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Small-Scale Thermoelectric Incinerator Prototype For Sustainable Waste Management And Power Generation, Yepy Sofi’I, Sudarman Sudarman, Roro Hendaryati, Suwarsono Suwarsono, Andinusa Rahmandhika, Rizki Hidayatulloh, Muhammad Budiman, Galuh As'adi, Ramdhan Zaroby, Willy Nugroho Mar 2026

Small-Scale Thermoelectric Incinerator Prototype For Sustainable Waste Management And Power Generation, Yepy Sofi’I, Sudarman Sudarman, Roro Hendaryati, Suwarsono Suwarsono, Andinusa Rahmandhika, Rizki Hidayatulloh, Muhammad Budiman, Galuh As'adi, Ramdhan Zaroby, Willy Nugroho

Engineering and Technology Journal

Indonesia faces a significant challenge in managing its waste effectively. Conventional incineration, while reducing waste volume, raises environmental concerns due to emissions. This research explores a novel approach by developing a thermoelectric incinerator prototype with a 10 kg/hour capacity. The incinerator aims to convert heat generated during waste incineration into electrical energy, offering an environmentally friendly alternative for waste management. The research involved designing and modeling the incinerator using Ansys Fluent 2021 R1 software. Incineration tests were conducted experimentally using 5 kg organic and 5 kg inorganic waste for 30 minutes. Critical parameters such as temperature distribution, moisture content, calorific …

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Estimating The Wear Behavior Of Hdpe Composites Reinforced With Nano Alumina Fillers Using Taguchi Method, Orhan Abdullah Mar 2026

Estimating The Wear Behavior Of Hdpe Composites Reinforced With Nano Alumina Fillers Using Taguchi Method, Orhan Abdullah

Engineering and Technology Journal

High-density polyethylene (HDPE), like other polymers is important in many applications due to its unique properties like low cost, weight, and availability. Recently, HDPE reinforced with ceramic fillers was considered in biomedical applications, especially in fabricating joint/bone replacements. Therefore, these applications required high wear resistance materials to serve under specific conditions. In this work, an optimization with Taguchi method was considered to associate the influence of nano alumina fillers, normal applied load, and sliding time on the wear rate values for hip joint replacement applications. In the first step, a TEM test was conducted on the prepared composites to ensure …

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Modeling And Analysis Of Thermoelectric Atmospheric Water Generation In The Economic City Of Iraq, Ammar Al-Tajer, Wissam Alawee, Hayder Dhahad, Zakaria Omara Mar 2026

Modeling And Analysis Of Thermoelectric Atmospheric Water Generation In The Economic City Of Iraq, Ammar Al-Tajer, Wissam Alawee, Hayder Dhahad, Zakaria Omara

Engineering and Technology Journal

Atmospheric Water Generation assumes substantial significance as an innovative remedy for addressing water scarcity and augmenting water resilience. This technology facilitates water extraction directly from the atmosphere, presenting a sustainable and decentralized approach to water supply. The investigation into the feasibility of attaining the dew point temperature for a heatsink operating in the climatic conditions of Basra was conducted using Fluent 22.1 software. The minimum dew point temperature under extreme conditions was determined to be 10.52℃. A thermoelectric device was a primary component in cooling the moisture-laden air to produce water from atmospheric air. Simulations were executed using two complementary …

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Enhancing Performance Of Double-Slope Solar Stills Through Optimization Of Heat Addition Methods: A Comprehensive Analysis, Mariam Murad, Wissam Alawee, Hayder Dhahad, Z.M. Omara Mar 2026

Enhancing Performance Of Double-Slope Solar Stills Through Optimization Of Heat Addition Methods: A Comprehensive Analysis, Mariam Murad, Wissam Alawee, Hayder Dhahad, Z.M. Omara

Engineering and Technology Journal

This comprehensive research paper reviews the latest techniques to enhance the productivity of double-slope solar stills by providing quantitative data on key research outcomes. With the global water scarcity crisis and the need for effective desalination technology, this study focuses on solar-based desalination techniques and their specific application in double-slope solar stills. This paper offers a comprehensive and quantitative analysis of heat addition methods in double-slope solar stills by examining published research findings, providing valuable insights for researchers and practitioners. The study reveals significant improvements in productivity through various modifications. Evaporation enhancement, heat transfer enhancement, and condensation enhancement have proven …

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Characterization Of Alkaline Treated Raffia Palm Fibres As Reinforcement In Polymer Composite, Ipilakyaa Daniel, Tile Emmanuel, Nyior Bem, Gundu Terfa Mar 2026

Characterization Of Alkaline Treated Raffia Palm Fibres As Reinforcement In Polymer Composite, Ipilakyaa Daniel, Tile Emmanuel, Nyior Bem, Gundu Terfa

Engineering and Technology Journal

The characterization of raffia palm fibre (RPF) for reinforcement in polymer composite for specialized applications was studied. The fibres were treated with NaOH solution and subjected to a tensile strength test. The fibres were also subjected to spectroscopy using Fourier transform infrared (FTIR), energy dispersive x-ray fluorescence (EDXRF), and x-ray diffraction (XRD). The study found that the alkaline-treated RPF presented a tensile strength of 195 MPa and Young’s modulus of 91.76 MPa. The strain at maximum stress in the fibre was found to be 2.125%. FTIR spectra of treated raffia palm fibres revealed that the fibres are characterized by O-H …

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3d Printing For Wind Turbine Blade Manufacturing: A Review Of Materials, Design Optimization, And Challenges, Ahmed Zarzoor, Alaa Jaber, Ahmed Shandookh Mar 2026

3d Printing For Wind Turbine Blade Manufacturing: A Review Of Materials, Design Optimization, And Challenges, Ahmed Zarzoor, Alaa Jaber, Ahmed Shandookh

Engineering and Technology Journal

Wind energy has become an easy-to-harness source by converting captured wind currents into electrical energy. Powerful and customizable wind turbines are used to convert wind energy efficiently. However, wind turbine development in terms of structure is still an active area of research aiming at efficiently building capable and long-lasting turbines. Additive manufacturing technology, particularly 3D printing, has revolutionized multiple industries, including its potential to create wind turbine blades with high cost-effectiveness and optimizable shapes and rigid structures. In this review, various 3D printing-based techniques, including Fused Deposition Modelling (FDM), Continuous Fiber Reinforcement (CFR), Stereolithography (SLA), and 3D Printing-enhanced Large-Scale Additive …

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Experimental Analysis And Combustion Characteristics Of Briquettes From Different Wood In Nigeria, Oluwaseyi Alabi, Timothy Adeyi, Sakiru Ekun Mar 2026

Experimental Analysis And Combustion Characteristics Of Briquettes From Different Wood In Nigeria, Oluwaseyi Alabi, Timothy Adeyi, Sakiru Ekun

Engineering and Technology Journal

The increasing demand for sustainable and renewable energy sources has prompted extensive research into alternative biomass fuels, particularly in regions like Nigeria, where traditional wood-based fuels are prevalent. A comprehensive experimental analysis of briquettes derived from various wood sources found in Nigeria aims to assess their combustion characteristics and potential as a viable alternative to traditional fuels. The selected wood species include indigenous varieties known for their abundance and accessibility. This study examines the physical and thermal properties of briquettes made from six wood types commonly found in Nigeria: Ayo, Obobo, Obeche, Araba, Afara, and Eku. From the experiment study, …

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Computational Insights Into The Thermal Performance Enhancement Of Solar Air Heater Channel Through Metal Foam Integration, Kadhim Al-Chlaihawi, Moayed Hasan, Ali Kaied Mar 2026

Computational Insights Into The Thermal Performance Enhancement Of Solar Air Heater Channel Through Metal Foam Integration, Kadhim Al-Chlaihawi, Moayed Hasan, Ali Kaied

Engineering and Technology Journal

The two-dimensional numerical simulations focused on fluid flow and heat transfer within a solar air heater (SAH) channel incorporating copper metal foam with a porosity of 90% were carried out in this study. The Local Thermal Non-equilibrium (LTNE) and Darcy-Extended Forchheimer (DEF) models were employed to predict fluid and thermal transport in the partially porous SAH channel. In the free flow zone, the  turbulence model was utilized. The thermal and thermo-hydraulic performances of SAH were examined concerning several factors, including pore density ( ), Reynolds number ( ), and dimensionless foam height ( ). The results demonstrate that inserting a …

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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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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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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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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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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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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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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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Solving Westergaard Half-Space Problems Using Potential Theory, Charles Ike Mar 2026

Solving Westergaard Half-Space Problems Using Potential Theory, Charles Ike

Engineering and Technology Journal

The Westergaard half-space problem has been solved using the potential theory in this work. It is a classical theme in elasticity theory that seeks to find the displacements and stresses in the half-space caused by known boundary loads. It has important applications in analyzing stresses and displacement fields in soil due to applied points and distributed loads on the boundary caused by structures placed on the soil. It is governed by stress–strain, strain-displacement, and equilibrium equations. Horizontal inextensibility is assumed in developing the problem, simplifying the displacement formulation to a three-dimensional (3D) Laplace equation. The potential theory is applied to …

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Recycling Of Waste Papers: Yield And Quality Of The Ash-Derived Materials, Ubong Robert, Sunday Etuk, Okechukwu Agbasi, Prosperity Ambrose, Rowland Adewumi Mar 2026

Recycling Of Waste Papers: Yield And Quality Of The Ash-Derived Materials, Ubong Robert, Sunday Etuk, Okechukwu Agbasi, Prosperity Ambrose, Rowland Adewumi

Engineering and Technology Journal

This research was designed to assess the yield and quality of ash prepared from different types of waste papers. Waste newspapers, writing papers, and cartons were selected for combustion to obtain the ashes and coded as WNPA, WWPA, and WCPA, respectively. The waste papers were incinerated simultaneously in separate but identical incinerators at 850 ℃. An experiment on the yield of the ashes was performed on two days before the ashes obtained were mixed based on the type of waste papers from which they were derived. The results showed that irrespective of the day and time, the WCPA was the …

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