Advanced Multidisciplinary Engineering Journal (AMEJ)
Advanced Multidisciplinary Engineering Journal (AMEJ) is an international, peer-reviewed journal dedicated to publishing high-quality research in all branches of engineering. The AMEJ provides a global platform for researchers, academics, industry experts, and innovators to present original contributions, cutting-edge advancements, and practical applications in engineering and applied sciences. The journal aims to bridge the gap between theoretical development, experimental work, industrial practice, and emerging technologies, offering comprehensive coverage of modern engineering challenges and their solutions. AMEJ welcomes multidisciplinary studies, cross-disciplinary collaborations, and research that integrates diverse engineering domains. Frequency: 6 Volumes Annually Editor-in-Chief: Prof. Dr. Ibrahim Saad Agwa Department of Civil and Architectural Constructions, Faculty of Technology and Education, Suez University, Suez 43221, Egypt Email: ibrahim.agwa@suezuniv.edu.eg Dr. Ibrahim Saad Agwa is an Associate Professor in the Department of Civil and Architectural Constructions, Faculty of Technology and Education, Suez University, Egypt. He holds a PhD in Civil Construction Technology and has an established academic career combining teaching, research, and scholarly publishing. His research interests focus on advanced concrete technology, high-performance and sustainable construction materials, green and eco-friendly concrete, and the application of nanomaterials in cementitious composites. Dr. Agwa has authored and co-authored numerous peer-reviewed research articles published in international journals indexed in Scopus and other reputable databases, reflecting a solid contribution to the fields of civil engineering and construction materials. His work demonstrates strong methodological rigor, originality, and relevance to contemporary challenges in sustainable infrastructure and construction technology. Scopus:https://www.scopus.com/authid/detail.uri?authorId=56584556900 Research Gate: https://www.researchgate.net/profile/Ibrahim-Agwa ============================================ For more details, please get in touch with AMEJ managing editor : Dr. Sahar A. Mostafa Department of Civil Engineering, Faculty of Engineering, Beni-Suef University, Beni-Suef, Egypt. Email: (editorialoffice@pub.scientificirg.com)
Scientific Innovation Research Group (SIRG)
Advanced Multidisciplinary Engineering Journal (AMEJ) content is published under a Creative Commons Attribution License (CCBY). This means that content is freely available to all readers upon publication, and content is published as soon as production is complete. Advanced Multidisciplinary Engineering Journal (AMEJ)seeks to publish the most influential papers that will significantly advance scientific understanding. Selected articles must present new and widely significant data, syntheses, or concepts. They should merit recognition by the wider scientific community and the general public through publication in a reputable scientific journal.
Towards Sustainable Ultra-High-Performance Concrete: Role of Nano Rice Husk Ash and Nano Sugarcane Bagasse Ash
Ultra-high-performance concrete (UHPC) has gained considerable attention owing to its superior mechanical properties and durability; however, its performance can be further enhanced by incorporating nanoscale supplementary cementitious materials. This study investigates the effects of nano rice husk ash (NRHA) and nano sugarcane bagasse ash (NSCBA) on the mechanical and durability performance of ultra-high-performance concrete (UHPC) incorporating end-hooked steel fibers. Both nanomaterials were produced through controlled calcination at 700 °C for 3 h, followed by ball milling to achieve nano-sized particles, ensuring high pozzolanic reactivity and effective dispersion. UHPC mixtures were prepared with varying nano contents, and a comprehensive experimental program was conducted to evaluate the compressive strength, splitting tensile strength, flexural strength, and sorptivity at different curing ages. The results demonstrated that the incorporation of NRHA and NSCBA significantly enhanced the mechanical performance of UHPC at both early and later ages. At 7 and 28 d, the compressive, splitting tensile, and flexural strengths showed notable improvements compared to those of the control mixture, with optimum nano contents yielding the highest strength gains. In particular, mixtures containing an intermediate dosage of NRHA exhibited the highest enhancements in tensile and flexural performance, indicating improved crack-bridging efficiency and fiber–matrix interaction. Durability assessment based on sorptivity measurements at 28 days revealed a substantial reduction in capillary water absorption for nano-modified UHPC, with NRHA-based mixtures showing the greatest improvement owing to pronounced pore refinement and matrix densification. Overall, the findings confirm that the use of agricultural waste-derived nanomaterials can effectively improve both the mechanical and durability properties of UHPC. Among the investigated mixtures, NRHA at the optimum dosage demonstrated superior overall performance, highlighting its potential as a sustainable and high efficiency nanoadditive for advanced UHPC applications.
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Comparative Analysis of Nano Zinc Oxide, Nano Silica Fume, and Nano Marble Powder as Cement Replacements in Self-Compacting Concrete
Self-compacting concrete (SCC) is an advanced class of concrete that offers significant advantages in terms of constructability and quality. However, achieving an optimal balance between mechanical performance and durability remains challenging. This study investigated the effects of incorporating nano zinc oxide, nano silica fume, and nano marble powder as partial replacements of cement on the fresh, mechanical, and durability properties of SCC. Ten SCC mixtures were prepared, including a control mix and nine nano-modified mixes with varying replacement levels. Nano zinc oxide was used at replacement ratios of 0.5%, 1.0%, and 1.5%, whereas nano silica fume and nano marble powder were incorporated at 1%, 2%, and 3% replacement levels. The fresh properties of SCC were evaluated to ensure compliance with self-compacting requirements, whereas the hardened performance was assessed through compressive strength (CS), splitting tensile strength (TS), and flexural strength (FS) tests at 7 and 28 days. In addition, sorptivity was measured at 28 days to evaluate the durability-related performance. The results demonstrated that the incorporation of nanomaterials significantly influenced the performance of SCC depending on the type and dosage of the nanomaterial. Nano silica fume exhibited the most pronounced improvement in both mechanical strength and durability, with an optimum replacement level of 2%, achieving notable enhancements in compressive, tensile, and FSs, and the lowest sorptivity values. Nano zinc oxide provided moderate but consistent improvements in mechanical properties; however, it increased sorptivity at higher dosages. In contrast, the nano marble powder primarily acted as an inert filler, resulting in moderate strength enhancement and improved durability at low replacement levels, whereas excessive replacement led to marginal performance gains. Overall, the findings highlight the critical role of nanomaterial selection and dosage optimization in enhancing SCC performance.
Performance Evaluation of Sustainable Lightweight Concrete Incorporating Recycled Brick Aggregates
This study investigates the performance of lightweight concrete incorporating crushed waste bricks as a partial replacement for natural coarse aggregates, focusing on optimizing the mixing proportions and evaluating the influence of silica fume content and superplasticizer dosage. The experimental results demonstrated that replacing 25% of the natural aggregates with crushed bricks improved the 28-day compressive strength, with higher cement contents mitigating the adverse effects of increased brick incorporation. The optimal silica fume content for enhancing compressive strength was identified as 15%; beyond this, the strength decreased due to reduced workability and microstructural inefficiencies. The dosage of superplasticizer significantly affected the compressive strength, with an optimum range observed at 2.0%, whereas excessive dosages resulted in strength reduction. The study also revealed that the early age compressive strength is more sensitive to brick incorporation, particularly at lower cement contents. However, mixtures with higher cement contents exhibited superior early-age strength retention. The splitting tensile strength consistently improved with increasing normal aggregate content, highlighting the role of aggregate stiffness and bond quality in controlling the tensile behavior. These findings contribute to the development of sustainable, high-performance lightweight concrete utilizing recycled materials, with potential applications in structural and non-structural elements where reduced self-weight and enhanced mechanical properties are desired.
Optimizing Pelargonium Ash as a Partial Cement Replacement in High-Strength Self-Compacting Concrete: Mechanical and Durability Aspects
This study investigates the effects of Pelargonium Ash (PGA) as a partial cement replacement on the mechanical and durability properties of High Strength-Self Compacting Concrete (HSSCC). PGA was incorporated at 5%, 10%, 15%, and 20% replacement levels, and its influence on setting time, compressive strength, splitting tensile strength, and resistance to sulfate and chloride attacks was evaluated. The results indicate that a 5% PGA replacement is optimal, leading to slight improvements in compressive strength at early and late curing ages without compromising self-compacting properties. Higher replacement levels (10%, 15%, 20%) adversely affect mechanical performance and durability due to rapid hardening, increased water absorption, and dilution of cementitious components. The 5% PGA mix exhibited enhanced resistance to sulfate and chloride attacks, attributed to pore refinement and pozzolanic activity. However, excessive PGA content beyond 10% negatively impacts durability and mechanical properties. Adjustments in water and superplasticizer dosages are necessary at higher PGA levels to maintain workability. In conclusion, PGA can be effectively used as a sustainable partial cement replacement in HSSCC at an optimal level of 5-10%, balancing mechanical performance, durability, and environmental benefits.
Sustainable Ultra-High-Performance Concrete: Incorporating Nano-Eggshell Waste for Improved Strength and Durability
This study examines the mechanical and microstructural properties of ultra-high-performance concrete (UHPC) incorporating nano-eggshell (NES) particles as a sustainable alternative to conventional nanofillers. Eggshell waste, consisting primarily of calcium carbonate, was processed through cleaning, calcination, and grinding to obtain nanosized particles. UHPC mixtures with varying NES contents (1-5%) were prepared and evaluated for compressive strength, splitting tensile strength, and sorptivity at different curing ages. The results indicate that the optimal NES dosage of 3% significantly enhanced the compressive strength of UHPC by 4.9%, 6.0%, and 4.5% at 7, 28, and 90 days, respectively, compared to the reference mixture. The splitting tensile strength at 28 days also improved by 16.9% with 3% NES. The sorptivity of UHPC was reduced by 28% at the optimal NES content, indicating its improved durability. XRD analysis revealed the presence of calcium carbonate and its interactions with the cementitious matrix. The performance improvements were attributed to the nanofiller effect, accelerated hydration, and microstructural refinement induced by NES particles. However, excessive NES addition beyond the optimal dosage led to slight reductions in the mechanical properties owing to agglomeration effects. The findings demonstrate the potential of nano-eggshell waste as a sustainable and performance-enhancing alternative in UHPC, contributing to the development of eco-friendly construction material.