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970 articles for “w/c ratio”
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Assessment of Liquefaction Potential Index for Sylhet City considering Maximum and Average Amplification Factor
Abstract: Soil liquefaction often occurs in saturated or partially saturated silty or sandy soil when an earthquake generates dynamic cyclic stress in the soil mass, reducing shear strength and stiffness. This study aims to assess the seismic soil liquefaction hazard potential for Sylhet City using shear wave velocity profiles of 49 boreholes. Factor of Safety (FOS) was evaluated taking into account shear wave velocity and maximum intensity of surface acceleration corresponding …
Published in Journal of Geotechnical Engineering · Vol. 8, Issue 2, 2021 · pp. 1–12 Read article
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Design and Development of Fiber Sandwiched Composite Materials for the Improvement of Mechanical Properties
Abstract: This research paper presents the development and mechanical characterization of fiber sandwiched composite materials (FSCM) to address the increasing demand for high-strength, lightweight, and corrosion-resistant materials in advanced engineering sectors such as automotive, aerospace, and transportation industries. Traditional homogeneous materials such as metals, ceramics, and polymers often fail to provide a balanced combination of properties like high tensile strength, low density, toughness, abrasion resistance, and impact resistance needed for modern …
Published in Journal of Experimental & Applied Mechanics · Vol. 17, Issue 1, 2026 · pp. 22–37 Read article
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Production of Disinfectant Using Aloe Vera (Aloe barbadensis miller) Plant Extracts
Abstract: This research work demonstrates the production of a disinfectant using aloe vera (Aloe barbadensis Miller) as main source of the raw material. The liquid content of the aloe vera was extracted using mechanical and unit operation mechanisms and the obtained raw material was subjected to heating to evaluate the effect of temperature on the characteristics of the physiochemical properties of pH, total ash, crude fat, fibre and protein, total carbohydrate, …
Published in International Journal of Pollution: Prevention & Control · Vol. 1, Issue 1, 2023 · pp. 17–30 Read article
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Investigation of Optimum Stress Concentration Factor for Shoulder Fillet in Round Bar under Different Loading Conditions
Abstract: The focus of this study is to investigate the optimal fillet radius of shoulder fillet in round bar which gives minimum stress concentration factor under different loading conditions i.e. torsional, bending and axial. Peterson’s curves were developed based on experimental work and analytical work carried out by number of researchers in the past. In that curves it is stated that the r/d ratios in the curves were taken from the …
Published in Trends in Mechanical Engineering & Technology · Vol. 8, Issue 2, 2018 · pp. 18–26 Read article
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Evaluation of Impact Strength and Hardness for Polymer Matrix Composites with Steel, Carbon and Glass Reinforcements for Automotive Applications
Abstract: Polymer matrix composites (PMCs) play a crucial role in a wide range of engineering submissions, owing to their impressive strength-to-weight ratio and customizable mechanical properties. This research focuses on examining how PMCs, enhanced with different materials, specifically carbon fibres, glass fibres, and steel fibres, behave when subjected to dynamic and static loading conditions. The study involves creating three distinct types of PMC specimens, each reinforced with one of the mentioned …
Published in Journal of Polymer & Composites · Vol. 13, Issue 1, 2025 · pp. 738–748 Read article
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Review on Replacement of Coarse Aggregate with Palm Kernel Shells: An Environmentally Sustainable Approach
Abstract: The palm shell, extracted from fruit seed can be categorized as a natural lightweight aggregate. To prepare the lightweight aggregates the mass compactness is between 1450 kg m−3 to 1750 kg m−3, which restricted it as low-density concrete. As the curing period of concrete progresses, there is a rise in the strength recognized the strength in the compression results of the cementitious material in 90 days of testing. Referring to …
Published in Journal of Construction Engineering, Technology & Management · Vol. 13, Issue 2, 2023 · pp. 1–6 Read article
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Machine Learning Based Optimization of Polymer Structure Property Relationships in Composite Material Systems
Abstract: In modern engineering applications, polymer-based composite materials have garnered a lot of attention because of their lightweight nature, high strength-to-weight ratio, and changing physical features. In order to maximize the relationships between polymer structure and properties in composite materials, this study suggests a strategy based on reinforcement learning (RL). The research utilized the Polymer Composite Properties Dataset, which contains 12,700 records associated with polymer matrices, reinforcement fillers, interfacial bonding characteristics, …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 242–255 Read article
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Study the Mechanical Properties of Epoxy Resin Reinforced with Metal OxideNanoparticles
Abstract: In this research the additive effect of (Magnesium Oxide (MgO), Zirconium Oxide (ZrO2), Copper Oxide (CuO)) nanoparticles to epoxy resin as a matrix have been studied, in addition tomanufacturing hybrid composites from the same nanoparticles which are (CuO/ZrO2, MgO/ZrO2) to epoxy resin as a matrix too. The hand lay-up method is using to manufacturing the composites from the epoxy resin and the nanoparticles with different weight ratios((0, 3, 6, 9) …
Published in Journal of Polymer & Composites · Vol. 9, Issue 1, 2021 · pp. 7–12 Read article
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Analytical exploration of self-consolidating concrete (SCC) mix proportions via the Taguchi method
Abstract: To address the challenge of limited space within structural elements containing densely packed reinforcement, Self-Compacting Concrete (SCC) was developed. This study focuses on optimizing the experimentation process using Design of Experiments (DoE). Taguchi's standard L(3) orthogonal array (OA) was utilized, consisting of four factors with three levels each, resulting in nine trial mixes. The factors examined include water-powder ratio, cementitious material content, superplasticizer dosage, and steel fiber content. The aim …
Published in Journal of Geotechnical Engineering · Vol. 11, Issue 1, 2024 · pp. 1–16 Read article
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FPGA-based Multichannel Digital Duty-Cycle Modulation and Application to Simultaneous Generation of Analog Signals
Abstract: The DCM (duty-cycle modulation) is used in industrial electronics as a special technique for producing switching time-varying periodic waves, with variable pulse width and modulation period. As an implication, unlike the fixed period of a PWM wave, the cyclic ratio of a DCM signal changes as a function of the modulating input according to a known function. However, most existing research works related to DCM-based instrumentation systems, are limited to …
Published in Journal of Electronic Design Technology · Vol. 8, Issue 1, 2017 · pp. 23–35 Read article
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Polymeric Actions to Make Recycled Aggregate of Concrete Improved
Abstract: Recycling construction materials of concrete, steel, and steel scraps is an essential technique to promote sustainable material flow. The restricted reuse of recycled concrete aggregate (RCA) can be justified, even in part, by the impact on strength and durability of new RCA-based concrete, instead of natural aggregates. Various research has been conducted on improving RCA effectiveness, in particular resistance and water absorption to disintegration. Application of polymer-dependent therapy was used …
Published in Journal of Polymer & Composites Read article
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The Prognostic Efficacy of Inflammatory Indicators in Determining the Cause of Multiple Sclerosis Exacerbation
Abstract: Multiple sclerosis (MS) is the most prevalent immune-mediated inflammatory disease affecting the central nervous system, presenting with diverse clinical symptoms and manifestations. This study investigates the diagnostic potential of the monocyte-to-lymphocyte ratio (MLR), red cell distribution width-to-lymphocyte ratio (RLR), and systemic immune-inflammation index (SII) in detecting MS attacks among relapsing-remitting MS (RRMS) patients seeking care in the emergency department (ED). The research focused on RRMS patients who presented to the …
Published in Research and Reviews : A Journal of Immunology · Vol. 15, Issue 1, 2025 · pp. 1–8 Read article
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Conducting an Experimental Study on the Behavior of Concrete Involves Partially Substituting Coarse Aggregate with Waste Granite Tiles and Fine Aggregate with Quartz Sandstone Powder
Abstract: In agricultural nations where cement is generally utilized, the high and consistently inflating cost of cement has made development over the top expensive. Removal of strong waste materials is an extraordinary worry in urban communities from one side of the planet to the other. A portion of these waste materials are not biodegradable, which frequently prompts removal emergency and natural contamination. Numerous endeavors are being made for the reusing of …
Published in Journal of Construction Engineering, Technology & Management · Vol. 14, Issue 3, 2024 · pp. 26–34 Read article
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Comparative Analysis of Serial and Parallel Robot Mechanisms for Industrial Automation
Abstract: Serial and parallel manipulators represent two major mechanical architectures in industrial automation, each with distinct strengths and trade-offs. This study presents a detailed comparative analysis of serial-chain (open-kinematic) robots and parallel-kinematic manipulators (PKMs) with a focus on industrial automation tasks. It covers kinematics, static accuracy and stiffness, dynamics and actuation requirements, control and calibration burdens, workspace and singularity behaviour, and practical industrial considerations (cost, integration, safety, maintenance). Serial robots, exemplified …
Published in International Journal of Robotics and Automation in Mechanics · Vol. 3, Issue 2, 2025 · pp. 22–26 Read article
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Carbon-Al Synergy: Investigation of Fiber Stacking and Orientation on the Mechanical Properties of Al-CFRP Metal Matrix Composites
Abstract: The current study examines the mechanical behaviour of Aluminum-Carbon Fiber Reinforced Polymer (Al-CFRP) composites fabricated using compression moulding technique, a novel approach combining lightweight aluminium’s ductility with CFRP’s high strength-to-weight ratio. The polymer composites were fabricated by stacking aluminum alloy sheet of 0.5mm thickness and pre-impregnated by 12 layers of carbon fiber cloth of 200 gsm, with epoxy resin between layers, followed by consolidation under controlled temperature and pressure in …
Published in Journal of Polymer & Composites · Vol. 13, Issue 5, 2025 · pp. 340–354 Read article
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Enhanced Thermal Stability and Thermophysical Properties of High Density Polyethylene Based Polymer Composite Synthesized Through Compression Moulding Route
Abstract: Polymer composite materials attract researchers as polymers can be filled with different fillers to get desired properties. Thermophysical properties of HDPE-silicon composite is reported in the present study. HDPE-Si composite was synthesized by hot compression and molding technique for different silicon volumetric ratio. Thermal conductivity as well as thermal diffusivity was found to be enhanced significantly on increasing the filler volumetric ratio. Thermal conductivity value for 20 volume % composite …
Published in Journal of Polymer & Composites · Vol. 11, Issue 5, 2023 · pp. 1–16 Read article
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Phase-Specific Nutrient Requirements in Broilers: Implications for Behavior, Gut Health, Performance, Meat Quality, Welfare, and Economics
Abstract: The broiler industry plays an inevitable role in global food security, requiring optimal formulation strategies tailored to each growth phase, starter, grower, and finisher for sustainable production. This review explores phase-specific nutrient requirements and their implications for broiler performance, meat quality, welfare, and economics. During the starter phase (1–10 days), nutrition focuses on immune development, gut health, and skeletal growth, with high protein and low energy needs. In the grower …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 15, Issue 1, 2025 · pp. 5–15 Read article
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Production of Polymer Composite using Thermoplastics, Sharp Sand and Sawdust: Mix Techniques
Abstract: This research work focuses on producing a polymer composite using a thermoplastic. PET is nonbiodegradable and contribute majorly to water and land pollution in this research work an attempt has been made to utilize PET waste plastic in manufacturing fibre-reinforced polymer composite by combining sawdust which is another waste product from woodwork operations and sand, a major component in construction, whose use is greatly threatening the ecosystem. The fibre-reinforced polymers …
Published in Emerging Trends in Chemical Engineering · Vol. 9, Issue 3, 2022 · pp. 21–29 Read article
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Free Vibration Analysis of Moderate Thickness in Orthotropic Laminated Composite Plate Using FE Method
Abstract: This study presents the free vibration analysis of a composite laminated plate with respect to various parameters. Effect of orientation on a plate, effect of boundary conditions, effect of thickness to width ratio, effect of changing the number of ply on a plate and the effect of young’s modulus ratio are presented in this study. Classical boundary conditions are used to perform all the studies. Free vibration analysis of plate …
Published in Journal of Materials & Metallurgical Engineering · Vol. 9, Issue 3, 2019 · pp. 1–8 Read article
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Linear Stability in the Restricted Three-Body Problem with Oblate Primaries
Abstract: We present a study of the linear stability which is based on numerically we find that the critical mass ratio of the primaries forms a smooth surface and absence that c decrease as oblate parameter increase. In the restricted three-body problem the collinear points are unstable and equilateral triangular points are stable for the mass ratio . The numerical calculations give a thorough explanation of how changes in …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 15, Issue 2, 2026 Read article