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The Function Of Di-Methyl Fumarate In Immunobiochemical And Hematological Changes In Individuals Infected With Entamoeba Histolytica, Saif Mohammed Algebory, Zainab Ali Hussein, Sarah Suliman Mohammed, Alaa Ihsan Saymeh, Hayder Kareem Algabri Sep 2025

The Function Of Di-Methyl Fumarate In Immunobiochemical And Hematological Changes In Individuals Infected With Entamoeba Histolytica, Saif Mohammed Algebory, Zainab Ali Hussein, Sarah Suliman Mohammed, Alaa Ihsan Saymeh, Hayder Kareem Algabri

Hilla University College Journal For Medical Science

Background: Amebiasis can cause a number of symptoms, from infections that are passed on when someone touches something infected to serious illness.

Objectives: role of DMF on reducing Entamoeba histolytica (E. histolytica) infection.

Materials and Methods: The study involved patients supplying E. histolytica-related symptoms. Diagnoses were confirmed using stool samples, and 10 mL of venous blood was obtained for antioxidant and immunological investigation. Groups: Control (uninfected patients), Normal medication (infected patients on normal medication), and Combination (infected patients getting standard treatment with DMF).

Results: Group 2 and 3 had lower red blood cell and haemoglobin levels than group …


Analyze The Mechanistic Role Of Lox-1 In Cardiovascular Diseases: A Review, Mohammed Algebory, Zainab Ali Hussein, Amira Shamseldin Mohamed Khalafalla, Emaan Mohammed Zina Sep 2025

Analyze The Mechanistic Role Of Lox-1 In Cardiovascular Diseases: A Review, Mohammed Algebory, Zainab Ali Hussein, Amira Shamseldin Mohamed Khalafalla, Emaan Mohammed Zina

Hilla University College Journal For Medical Science

Cardiovascular disease (CVD) is a major global health concern that leads to illness and death. One of the primary risk factors for CVD is dyslipidemia, which can cause an elevation of oxidized LDL. Recently, the lectin-like oxidized low-density lipoprotein receptor 1 (LOX-1 receptor), a transmembrane protein found in endothelial cells, platelets, cardiomyocytes, and other cells, has gained attention. LOX- 1 receptors are responsible for recognizing oxLDL, and overactivation can trigger pathways that cause tissue damage, including endothelial dysfunction and apoptosis, process under investigation involves the following: promotion of platelet activation and adhesion to endothelial cells; ADP-mediated aggregation; and the development …


The Concept Of Preeclampsia In Biochemistry: Molecular Mechanisms, Oxidative Stress, And Emerging Biomarkers, Dunia Abbas Khudhair, Ammar Hatem Abdullateef, Abbas Hamza Khudhair Sep 2025

The Concept Of Preeclampsia In Biochemistry: Molecular Mechanisms, Oxidative Stress, And Emerging Biomarkers, Dunia Abbas Khudhair, Ammar Hatem Abdullateef, Abbas Hamza Khudhair

Hilla University College Journal For Medical Science

Preeclampsia is a complex, pregnancy-related hypertension condition that significantly endangers mother and fetal health. While its clinical diagnosis is based on hypertension and proteinuria, its origins lie in a cascade of biochemical and molecular disturbances. This review highlights the central concept of preeclampsia from a biochemical perspective, with emphasis on abnormal placental development, oxidative stress, and endothelial dysfunction. Placental hypoxia and an excess of reactive oxygen species (ROS) are caused by inadequate spiral artery remodeling, which also leads to lipid peroxidation and systemic inflammation. A critical biochemical characteristic is the disparity between anti-antigenic (sFlt-1, sENG) and pro-antigenic (PlGF, VEGF) molecules, …


Age-Dependent Associations Of Etanercept And Methotrexate In Stage Ii And Iii Rheumatoid Arthritis Patients, Saif M. Hassan, Zainab Ali Hussein Sep 2025

Age-Dependent Associations Of Etanercept And Methotrexate In Stage Ii And Iii Rheumatoid Arthritis Patients, Saif M. Hassan, Zainab Ali Hussein

Hilla University College Journal For Medical Science

Background: Rheumatoid arthritis (BC) is a complex disease that involves molecular and cellular alterations mediated by endogenous and exogenous factors.

Objectives: This study aimed to determine the osteoblastic and osteoclastic activities at baseline and three months after therapy in RA patients treated with methotrexate (MTX) and Etanercept (ETN).

Methods: investigated the relationship between Etanercept 1 (ETN1) and Methotrexate levels in Rheumatoid arthritis patients positive for cancer antigen 15–3 (CA15-3). This study included 90 patients with stage II and III BC divided into two age groups (25–44 and 45–60 years) and 90 age-matched healthy controls. Serum concentrations of ETN1 and …


"Our River Is Full Of Trash And Many Fish Die" Children's Voices From Pasuruan, Indonesia: Discursive Strategies In Positive Discourse Analysis For Sustainability, Bambang Prastio, Ahsani Maulidina, Agung Rinaldy Malik, Achmad Tantowi Azis Sep 2025

"Our River Is Full Of Trash And Many Fish Die" Children's Voices From Pasuruan, Indonesia: Discursive Strategies In Positive Discourse Analysis For Sustainability, Bambang Prastio, Ahsani Maulidina, Agung Rinaldy Malik, Achmad Tantowi Azis

The Qualitative Report

Addressing river pollution and understanding the role of children in environmental conservation are essential for maintaining ecosystem health and sustainability. This study used positive discourse analysis to explore children's discourse about river pollution in Pasuruan, East Java, Indonesia. Data were collected using walk-and talk ethnographic interviews with 15 children aged 7 to 11 years. The findings reveal that these children employed five discursive strategies: (1) nomination: metaphor, comparison, and cultural practices; (2) predication: positive attitude in the forms of disposition and behavior; (3) argumentation: contrast and parallelism; (4) perspectivisation, involving a type of religious representation that includes references to the …


Acute Care Of Patients With Moderate Respiratory Distress: Recommendations From An American College Of Emergency Physicians Expert Panel., Christopher W Baugh, Jim F Neuenschwander, Jesslyn Lenox, Jennifer Hoh, Kara Ward, Sara Muramoto, John Casey, Antonio Anzueto, Hajirah Ishaq, Jared Mount, Peter M Deblieux Sep 2025

Acute Care Of Patients With Moderate Respiratory Distress: Recommendations From An American College Of Emergency Physicians Expert Panel., Christopher W Baugh, Jim F Neuenschwander, Jesslyn Lenox, Jennifer Hoh, Kara Ward, Sara Muramoto, John Casey, Antonio Anzueto, Hajirah Ishaq, Jared Mount, Peter M Deblieux

Ambulatory and Primary Care Articles

INTRODUCTION: Patients with respiratory distress are frequently encountered in the emergency department (ED). Efforts to assess, initiate treatments, and stabilize these patients require a systematic and rapid response. Emergency physicians need a comprehensive and efficient approach for evaluating, treating, and managing patients presenting to the ED with moderate respiratory distress.

METHODS: The American College of Emergency Physicians convened an expert panel of academic and community emergency physicians, critical care specialists, respiratory therapists, hospitalists, and pharmacists to develop and subsequently disseminate consensus recommendations regarding the diagnosis and treatment of patients with moderate respiratory distress presenting to the ED.

RESULTS: A digital …


Converse Of Ptolemy’S Theorem, Hidefumi Katsuura Sep 2025

Converse Of Ptolemy’S Theorem, Hidefumi Katsuura

Faculty Research, Scholarly, and Creative Activity

In The Almagest, we found the original Ptolemy’s theorem and its proof, and we compared it to “Ptolemy’s theorem” written in two modern geometry textbooks. They are different in that the new ones include the “converse” of the original one. We noticed the hypothesis of the “converse” can be interpreted in two ways. Using this as our motivation, we establish a new theorem related to Ptolemy’s theorem in this note as follows: If four distinct points A, B, C, D are given in the three-dimensional space so that ABC is a triangle, and if |AB||CD|+|AD||BC|=|AC||BD|, then the points A, B, …


Early-Life Exposure To Organic Chemical Pollutants As Assessed In Primary Teeth And Cardiometabolic Risk In Mexican American Children: A Pilot Study, Vidya S. Farook, Feroz Akhtar, Rector Arya, Alice Yau, Srinivas Mummidi, Juan Lopez Alvarenga, Alvaro Diaz-Badillo, Roy G. Resendez, John Blangero Sep 2025

Early-Life Exposure To Organic Chemical Pollutants As Assessed In Primary Teeth And Cardiometabolic Risk In Mexican American Children: A Pilot Study, Vidya S. Farook, Feroz Akhtar, Rector Arya, Alice Yau, Srinivas Mummidi, Juan Lopez Alvarenga, Alvaro Diaz-Badillo, Roy G. Resendez, John Blangero

Human Genetics Publications

Early-life exposure to organic chemicals (OCs) may influence childhood obesity and associated cardiometabolic risk. These conditions have been shown to disproportionately affect minority populations such as Mexican Americans (MAs). However, information on the impact of organic chemicals on cardiometabolic risk in MA children is limited. Therefore, we conducted a pilot study to assess the extent to which exposure to organic chemicals influences cardiometabolic traits (CMTs) in MA children. We recalled 25 children from a previous study and collected 25 primary teeth from them. Chemical analyses of the teeth were performed using established protocols. Target analytes included acetaminophen (APAP); 3,5,6-trichloro-2-pyridinol (TCPy), …


Genomic Prediction And Association Mapping Of Early Season Flood Tolerance In Soybean, Caio Canella Vieira, Chengjun Wu, Derrick Harrison, Rafael Marmo, Liliana Florez-Palacios, Andrea Acuna, Daniel Rogers, Samuel B. Fernandes, Igor Fernandes, Grover Shannon, Heng Ye, Henry T. Nguyen Sep 2025

Genomic Prediction And Association Mapping Of Early Season Flood Tolerance In Soybean, Caio Canella Vieira, Chengjun Wu, Derrick Harrison, Rafael Marmo, Liliana Florez-Palacios, Andrea Acuna, Daniel Rogers, Samuel B. Fernandes, Igor Fernandes, Grover Shannon, Heng Ye, Henry T. Nguyen

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Flooding has become a major threat to soybean [Glycine max (L.) Merr.] production as the frequency and intensity of extreme precipitations have been increasing due to climate change. While advances have been made in identifying soybean genetic resources and genomic regions associated with mid-season flood tolerance, there is limited understanding of early season flood tolerance at the vegetative growth stages V2/V4. This study aimed to identify genomic regions associated with early season flood tolerance using a diverse panel of 254 soybean accessions, as well as investigate the viability of implementing genomic prediction models for flood tolerance. Field trials were conducted …


A Not-Quite-Assessment Of Assessing Autoethnography: Ekphrastic Compositions On Quality, Clarity, And (Un)Certainty In Autoethnography, Aaron Hoy Sep 2025

A Not-Quite-Assessment Of Assessing Autoethnography: Ekphrastic Compositions On Quality, Clarity, And (Un)Certainty In Autoethnography, Aaron Hoy

The Qualitative Report

Taking an ekphrastic approach, this essay responds to and reflects on my reading of Assessing Autoethnography: Notes on Analysis, Evaluation, and Craft by Andrew F. Herrmann and Tony E. Adams. It has three parts. First, I summarize the book’s central chapters and discuss their practical uses, especially as prompts for in-progress autoethnographies. Second, using clarity as a point of entry, I explore a tension I felt while reading the book—between the comforting utility of specific criteria and the marginalizing power of criteria themselves. Finally, I share a found poem composed in response to the book and reflect on the impermanent …


Emotion Labor As A Catalyst For Language Teacher Identity Renewal And Well-Being: An Autoethnography, Yasser Aminifard Sep 2025

Emotion Labor As A Catalyst For Language Teacher Identity Renewal And Well-Being: An Autoethnography, Yasser Aminifard

The Qualitative Report

In this autoethnographic study, I explore how my temporary engagement in emotion labor, triggered by teaching and assessment demands imposed by my university, prompted a renewal of my teaching style and enhanced my well-being. Personal journals supplemented by semi-structured interviews with the university’s vice-chancellor, whose expectations precipitated my emotion labor, served as the primary data sources. Drawing on Engeström’s (2015) activity theory, I analyze the contradictions within my university’s activity system that gave rise to my emotion labor, understood here as the management of the negative emotions and tensions arising from discrepancies between teachers’ professional beliefs and workplace demands (Benesch, …


A Few Millimeters Of Bone: How Male Supremacists Leverage Scientific Sexism To Reinforce Misogynistic Ideologies, Robin O'Hanlon Sep 2025

A Few Millimeters Of Bone: How Male Supremacists Leverage Scientific Sexism To Reinforce Misogynistic Ideologies, Robin O'Hanlon

Publications and Research

In recent years, male supremacist actors have reinforced their misogynistic worldviews by using narrative strategies centered on authoritative “common sense” and scientific “fact.” This paper presents a thematic narrative analysis of The Incel Wiki and the Wiki4Men, representing the first formal analysis of the wiki for the men’s rights organization A Voice for Men. The analysis indicates male supremacists use techniques including misappropriation of scientific information, manipulation of statistics, and leveraging pseudoscientific information to develop their narrative strategies of supremacy. The most consistent narrative strategies of scientific sexism on the wikis are male victimhood, denial of inequality between men and …


Airway Abnormalities In Children Operated For Congenital Heart Disease: Clinical Characteristics And Risk Factors From A Case-Control Study, Fatma Al Kindi, Rand Al Harthy, Saif A. Thani, Hamood Al Kindi, Hussain Mohsin Sep 2025

Airway Abnormalities In Children Operated For Congenital Heart Disease: Clinical Characteristics And Risk Factors From A Case-Control Study, Fatma Al Kindi, Rand Al Harthy, Saif A. Thani, Hamood Al Kindi, Hussain Mohsin

Sultan Qaboos University Medical Journal

Objectives: Congenital heart disease (CHD) is the most common congenital defect, with airway abnormalities (AAs) representing significant comorbidities that contribute to increased morbidity and clinical complexity. This study aimed to identify the most common AAs, associated risk factors, and clinical outcomes in children with CHD. Methods: This case-control study included children aged under 13 years with CHD who underwent cardiothoracic surgery between 1 January 2016 and 31 December 2018 at the National Genetic Centre in Oman. Cases were children with concurrent AAs, while controls were age- and gender-matched children with CHD but without AAs. Results: The prevalence …


Concrete Material Bank In Japan Toward Co2 Recycling, Masaki Tamura, Takafumi Noguchi Sep 2025

Concrete Material Bank In Japan Toward Co2 Recycling, Masaki Tamura, Takafumi Noguchi

C3 Symposium 2025

Providing excellent performance as a structural material, concrete has long been essential for modern civilization and recognized as a material that will continue to maintain and support the development of human society. Now that recycling of concrete in a completely closed loop has become technically feasible, concrete is being seen in a new light. On the other hands, the huge issues regarding carbon dioxide emissions all of the world are a concern in the construction field as well as in society. To solve this problem, a concept for new Calcium Carbonate Concrete (CCC) is proposed. This paper is focused on …


Upcycled Medical Hemp Fibers For Enhancing Tensile Strength And Fire Resistance Of High-Strength Concrete, Ahmed Almaadawy, Liahneli Knowles, Abigail Lazier, Srishti Banerji, Zach Haber, Bruce Bugbee Sep 2025

Upcycled Medical Hemp Fibers For Enhancing Tensile Strength And Fire Resistance Of High-Strength Concrete, Ahmed Almaadawy, Liahneli Knowles, Abigail Lazier, Srishti Banerji, Zach Haber, Bruce Bugbee

C3 Symposium 2025

This research investigates fire and tensile resistance of high-strength concretes employing fibers extracted from waste medical hemp stalks. Environmental impact analysis of hemp-based solutions is also considered.


Recovery Of Silica As Scm From Olivine Using Oxalic Acid-Enabled Chemical Comminution, Jie Shi, Hongyan Ma Sep 2025

Recovery Of Silica As Scm From Olivine Using Oxalic Acid-Enabled Chemical Comminution, Jie Shi, Hongyan Ma

C3 Symposium 2025

Using supplementary cementitious materials (SCMs) to substitute cement or clinker, as a decarbonization strategy, is limited by the shortage of conventional SCMs like GGBS, fly ash, and silica fume. Meanwhile, mafic/ultramafic minerals are unlimited to be processed for SCMs production. In this study, oxalic acid is used to dissolve olivine ((Mg, Fe)2SiO4) to produce amorphous silica. Results show that high purity amorphous silica could be successfully obtained and the yield can be up to 93.42%. This process endows the extra value of olivine alongside being used for carbon storage.


Thermochemical Pre-Treatments On Corn Stover Ash To Boost Its Reactivity, P V P Moorthi, Zhihui Sun Sep 2025

Thermochemical Pre-Treatments On Corn Stover Ash To Boost Its Reactivity, P V P Moorthi, Zhihui Sun

C3 Symposium 2025

When treated properly, corn stover ash (CSA) is known to be an effective source of supplementary cementitious materials (SCM) for use in concrete. The influence of thermochemical pre-treatments on the reactivity of CSA was studied in this project. The result shows that acid pre-treatment was effective and necessary in the removal of organic and inorganic compounds from the corn stover. The pre-treatment conditions including type and concentration of acid used, temperature, pre-treatment duration, and the acid/ash (A/A) ratio are important factors that affect the reactivity of the final product. This study shows that a proper pre-treatment condition will lead to …


Hydrophobic Modification For The Design Of High-Performance And Ultra-High Performance Cementitious Composites, Iman Aghayan, Scott Muzenski, Reed T. Heintzkill, Marina I. Kozhukhova, Habib Tabatabai, Konstantin Sobolev Sep 2025

Hydrophobic Modification For The Design Of High-Performance And Ultra-High Performance Cementitious Composites, Iman Aghayan, Scott Muzenski, Reed T. Heintzkill, Marina I. Kozhukhova, Habib Tabatabai, Konstantin Sobolev

C3 Symposium 2025

This paper presents a novel method for designing high-performance and ultra-high-performance concrete (HPC/UHPC) through hydrophobic and nanomaterial modification. Three-dimensional hydrophobization of cementitious matrices is achieved by incorporating water-based emulsions of silico-organic compounds containing active hydrogen. The approach enables high-strength matrices with superior flexural performance via fiber reinforcement, further improved by uniformly distributed small air voids that promote multi-cracking and strain-hardening behavior. Incorporating aluminum oxide (Al₂O₃) nanofibers with 1% silica fume (or metakaolin) produces UHPC-grade strength and ductility while reducing chemical shrinkage and simplifying composition. Developed with Type V and I cements at W/CM < 0.3, the composites reached compressive strengths up to 195 MPa, exhibited high flowability, and showed excellent strain-hardening when reinforced with 2% synthetic macrofibers (PVA and HDPE), with HDPE yielding greater ductility. This synergy of hydrophobic modification, nanoengineered matrix, and synthetic fibers offers a cost-effective, sustainable alternative to conventional HPC/UHPC, exceeding durability and environmental performance benchmarks.


Enhancing Early Strength Development Through Co2-Induced Hydration Acceleration, Patrick Rubaszewski, Thomas Matschei Sep 2025

Enhancing Early Strength Development Through Co2-Induced Hydration Acceleration, Patrick Rubaszewski, Thomas Matschei

C3 Symposium 2025

This study investigates the accelerating effect of gaseous CO2 on cement hydration.The addition of up to 0.2% CO2 by weight of cement during the mixing process led to increased compressive strength after 24 hours and greater heat release during the acceleration phase. However, higher concentrations negatively affected workability and hydration kinetics, resulting in lower compressive strength.


Graphene Reinforced Cement-Based Triboelectric Nanogenerator For Efficient Energy Harvesting, Wenkui Dong, Wengui Li Sep 2025

Graphene Reinforced Cement-Based Triboelectric Nanogenerator For Efficient Energy Harvesting, Wenkui Dong, Wengui Li

C3 Symposium 2025

This study investigated a graphene reinforced cement-based triboelectric nanogenerator (TENG) aimed at harvesting mechanical energies in infrastructure. The triboelectric layers of the cement-based TENG consisted of a fully cured graphene modified cement-based plate and a polytetrafluoroethylene (PTFE) film, which were tested under a contact-separation mode. Microstructural analysis indicated that the graphene was well-dispersed in the cementitious matrix, and the graphene-cement composites achieved excellent compressive and flexural strengths of 53.0 and 3.5 MPa, respectively. The electrical characteristics of the graphene-cement composites, specifically their resistivity and impedance, showed that they did not reach the percolation threshold, making them ideal dielectric materials with …


Computational Simulations Fresh-To-Solid Transition For Additive Manufacturing Of Ultra-High-Performance Fiber Reinforced Concrete, Erol Lale, Bahar Ayhan, Ayesha Ahmed, Elmer Irizarry, Jiaqi Liu, Shady Gomaa, Raul Marrero-Rosa, Gianluca Cusatis Sep 2025

Computational Simulations Fresh-To-Solid Transition For Additive Manufacturing Of Ultra-High-Performance Fiber Reinforced Concrete, Erol Lale, Bahar Ayhan, Ayesha Ahmed, Elmer Irizarry, Jiaqi Liu, Shady Gomaa, Raul Marrero-Rosa, Gianluca Cusatis

C3 Symposium 2025

Additive manufacturing of concrete is a topic of interest within the academia and industry. Simulating the printable concrete behavior from the fresh state to hardened state to long-term will provide the future engineers the ability to optimize the design and predict failure of structural elements. A key aspect for concrete additive manufacturing is the complexity of optimization which includes systems, schedule, and materials. Our research focus on the simulation fresh state, hardened behavior, and the transition from fluid-to-solid of nanoclay modified ERDC ultra-high-performance fiber reinforced concrete system. Discrete fresh concrete model (DFC) and Smooth Particle Hydrodynamics (SPH) model are studied …


Mechanics Of Fracture In Layered Architected Materials, Reza Moini, Aimane Najmeddine, Shashank Gupta Sep 2025

Mechanics Of Fracture In Layered Architected Materials, Reza Moini, Aimane Najmeddine, Shashank Gupta

C3 Symposium 2025

This talk asks the role of mechanics of materials, particularly fracture mechanics in design and engineering civil infrastructure materials. Concrete, a quasi-brittle material is the backbone of the civil infrastructure. Decades of research on engineering and fracture mechanics of concrete led by the hundreds of pioneering works of great scholars, have helped us understand mechanism of crack initiation and propagation in heterogeneous materials. However, there remain a significant need to continue understand mechanics of damage in conventional and novel heterogeneous infrastructure materials. Growth in automation and robotics (e.g., 3D-printing), innovative cementitious composite materials (e.g., architected material), and numerical frameworks (e.g., …


Assessment Of Textured Epoxy-Coated Rebars In Concrete For Chloride Induced Corrosion, Kevin Danner, Shayan Ali Khan, John S. Popovics Sep 2025

Assessment Of Textured Epoxy-Coated Rebars In Concrete For Chloride Induced Corrosion, Kevin Danner, Shayan Ali Khan, John S. Popovics

C3 Symposium 2025

Textured-Epoxy coated rebar (TEC) differs from conventional Epoxy coated rebar (ECR) due to its rougher exterior surface – which aims to reduce cracking in concrete and development length. However, no studies have investigated the long-term corrosion response behavior of both TEC and ECR when subjected to service-level bridge deck displacement criteria. This study utilizes Non-Destructive Testing techniques such as Half-Cell Potential (HCP), Ground Penetrating Radar (GPR), Ultrasonic Pulse Velocity (UPV), and Linear Polarization Resistance (LPR) to characterize the corrosion response behavior of service-level stressed TEC and ECR reinforced concrete samples subjected to a realistic chloride environment.


Comparative Analysis Of The Corrosion Resistance Epoxy-Coated, Textured Epoxy-Coated, And Uncoated Reinforcement Bars, Shayan Ali Khan, Kevin Danner, John S. Popovics Sep 2025

Comparative Analysis Of The Corrosion Resistance Epoxy-Coated, Textured Epoxy-Coated, And Uncoated Reinforcement Bars, Shayan Ali Khan, Kevin Danner, John S. Popovics

C3 Symposium 2025

The corrosion of steel reinforcement inside concrete remains a significant challenge for the construction industry. In the United States alone, an estimated annual cost of $240 billion is incurred from corrosion-related damage, with about 20% attributed to the corrosion of reinforced concrete [1]. Among various corrosion prevention techniques for reinforced concrete, epoxy coating of rebars (EC), has been widely adopted. However, due to the smooth surface of epoxy coating, its bond strength with concrete is reduced significantly, which has become a barrier for its large-scale adoption [2]. To tackle this, Sherwin Williams developed textured epoxy coated rebars (TEC) (figure 1a) …


Cathodic Protection Of Reinforced Concrete Infrastructure Using Mmo-Coated Titanium Alloy Bars, Naveen Krishnan, Christopher Higgins, O. Burkan Isgor Sep 2025

Cathodic Protection Of Reinforced Concrete Infrastructure Using Mmo-Coated Titanium Alloy Bars, Naveen Krishnan, Christopher Higgins, O. Burkan Isgor

C3 Symposium 2025

ASTM B1009 titanium alloy bars (TiABs), which are chemically and mechanically equivalent to Grade 5 titanium, have recently gained attention as dual-purpose materials for near-surface-mounted retrofit (NSMR) of concrete. These bars offer both structural reinforcement and corrosion protection when used as anodes in impressed current cathodic protection (ICCP) systems. While TiABs without mixed metal oxide (MMO) coating provide inherent corrosion resistance as an ICCP anode, their effectiveness in ICCP applications may be limited. This study evaluates the electrochemical behavior of iridium-based MMO coatings on TiABs that are designed as ICCP anodes. Open circuit potential (OCP) measurements showed that both uncoated …


Development Of Ternary Blended Cement Incorporating Limestone And Natural Pozzolan For Enhanced Durability And Sustainability, Azadeh Hosseinpanahi, Luis Baquerizo Ibarra, Hamed Maraghechi Sep 2025

Development Of Ternary Blended Cement Incorporating Limestone And Natural Pozzolan For Enhanced Durability And Sustainability, Azadeh Hosseinpanahi, Luis Baquerizo Ibarra, Hamed Maraghechi

C3 Symposium 2025

This study evaluates the commercial development of ternary blended cement with integration of a zeolite based natural pozzolan as a supplementary cementitious material (SCM). The experimental program involved a systematic characterization of the natural pozzolan, as well as assessment of fresh, mechanical and durability properties of the ternary blended cement to ascertain short-term and long-term performances.


Optimizing Thermoelectric Efficiency In Cementitious Nanocomposites Via Hybrid Swcnt/Ncf Reinforcement, Myrsini E. Maglogianni, Panagiotis A. Danoglidis, Maria S. Konsta-Gdoutos Sep 2025

Optimizing Thermoelectric Efficiency In Cementitious Nanocomposites Via Hybrid Swcnt/Ncf Reinforcement, Myrsini E. Maglogianni, Panagiotis A. Danoglidis, Maria S. Konsta-Gdoutos

C3 Symposium 2025

Cement-based materials with thermoelectric functionalities offer new opportunities for harvesting waste heat from civil infrastructure. While carbon nanomaterials have been shown to enhance the electrical conductivity of cementitious composites, achieving efficient thermoelectric energy conversion requires simultaneously controlling the thermal properties while preserving the electrical properties. In this study, insulating cellulose nanofibrils (NCFs) are combined with superconducting single-walled carbon nanotubes (SWCNTs) to develop nano-engineered cementitious materials capable of converting thermal gradients into electrical energy. Results show that the hybrid SWCNT/NCF mortars exhibited a Seebeck coefficient up to 4083.61 μV/K and ZT of 0.46 while maintaining high electrical conductivity of 126.42 S/m …


Biochar-Amended Engineered Cementitious Composites, Amir Ali Shahmansouri, Zhigang Zhang, Xianming Shi Sep 2025

Biochar-Amended Engineered Cementitious Composites, Amir Ali Shahmansouri, Zhigang Zhang, Xianming Shi

C3 Symposium 2025

This study investigates the incorporation of biochar as a sustainable cement replacement in high-strength ECC, focusing on mechanical properties, durability, microstructural characteristics, and environmental impacts. Biochar was added at 5%, 10%, 20%, and 30% replacement levels by cement weight, and its effects were assessed through compressive and tensile strength tests, TGA, SEM, and LCA. Results showed that biochar-enhanced ECC achieved 28-day compressive strengths of 95.4–99.6 MPa, with a peak tensile strength of 8.58 MPa at 20% biochar content, though higher dosages reduced strain capacity. TGA confirmed increased pozzolanic activity with reduced portlandite content, while SEM images revealed a denser ITZ …


Carbon-Negative Concrete By Using Biochar, Matteo Pavese, Luca Lavagna, Carlo Amata, Jean Marc Tulliani, Mattia Bartoli, Mauro Giorcelli, Claudia Guzzoni Iudice, Alessio Mondello, Matthew Mallory, Chris Carstens, Douglas Dufaux Sep 2025

Carbon-Negative Concrete By Using Biochar, Matteo Pavese, Luca Lavagna, Carlo Amata, Jean Marc Tulliani, Mattia Bartoli, Mauro Giorcelli, Claudia Guzzoni Iudice, Alessio Mondello, Matthew Mallory, Chris Carstens, Douglas Dufaux

C3 Symposium 2025

In this paper we present the realization of carbon negative concrete by substituting cement and aggregate with biochar. By conveniently choosing feedstock and properties of biochar, it is possible to maintain the same compression strength of standard concrete. Several biochar types derived from different vegetal feedstocks were used, that were characterized for their composition and physical properties. The effect of biochar type and grain size distribution was studied, demonstrating the possibility of maintaining or even slightly improving the mechanical properties of mortar and concrete, depending on the biochar content. The physical properties and pore distribution of mortar containing biochar was …


Mix Designs Of Low Modulus Of Elasticity Of Mass Concrete And Cushion Concrete Used In Yusufeli Dam Body, Aydın Saglik Sep 2025

Mix Designs Of Low Modulus Of Elasticity Of Mass Concrete And Cushion Concrete Used In Yusufeli Dam Body, Aydın Saglik

C3 Symposium 2025

The construction of the Yusufeli Dam and Hydroelectric Power Plant on the Coruh River has been completed and the dam, which has a total water storage volume of approximately 2,2 billion cubic meters, has become the highest dam in Turkey and the fifth highest dam in the world with a height of 275 meters in the double-curvature concrete arch dam type. During the design process of the mass concrete body of the Yusufeli Dam, relatively low deformation modulus zones were encountered in some slope rock soils where the thin arch structure would create pressure. It was taken into consideration that …