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39 articles for “Water–cement ratio”
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Impact of water-cement ratio and cement content on pore area percentage and chloride diffusion – A molecular dynamics study
Abstract: The exposure of a reinforced structure to water-based settings leads to the occurrence of chloride-induced corrosion, resulting in a reduction in both the durability and performance of the structure. The entry of chloride ions into concrete and the pore area percentage is influenced by several elements, including the degree of humidity, the presence of fractures, environmental conditions, water-to-cement ratio (w/c ratio), and cement content. This research focuses on the utilization …
Published in Journal of Construction Engineering, Technology & Management · Vol. 13, Issue 3, 2023 · pp. 37–45 Read article
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Corrosion Behavior of Steel in Reinforced Concrete
Abstract: There are many environments where steel is exposed to different types of cement as well as different water cement ration along with variable PH of water mixed during the preparation of concrete. Deterioration of steel in such environment causes corrosion and its rate depend upon the type of cement and type of environment because it not only corrode steel but also affect the concreting material as it contains various chemical …
Published in Recent Trends in Civil Engineering & Technology · Vol. 5, Issue 3, 2015 · pp. 66–74 Read article
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Optimization of Cement Replacement by Fly Ash in Compressive Strength of Portland Cement Concrete
Abstract: The production of cement has been known for its additive role in environmental pollution. As a measure of abatement of pollution effort, scientist have evoked the concept of diluting cement with various pozzolanic additive like fly ash, blast furnace slag etc. Many of these additives were found to be acceptable for cement replacement, but their exact role and efficacy remains elusive. In the present study, fly ash was added as …
Published in Recent Trends in Civil Engineering & Technology · Vol. 7, Issue 1, 2017 · pp. 24–35 Read article
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Enhancing Compressive Strength and Durability through Optimization of Concrete Mixtures
Abstract: This research investigates how varying cement-aggregate ratio, water-cement ratio, and slump height affect the compressive strength of concrete mixtures. Through an analysis of 36 samples, each representing different combinations of these parameters, significant insights are gained into the optimization of concrete mix designs for construction applications. The study reveals that higher water-cement ratios tend to decrease compressive strength due to increased porosity in cured concrete. Conversely, higher cement-aggregate ratios generally …
Published in Journal of Geotechnical Engineering · Vol. 11, Issue 1, 2024 · pp. 1–12 Read article
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Influence of Mineral Admixture on Compressive Strength of Concrete
Abstract: The current paper shows the results of an investigation focused on the effect of metakaoline (MK) and silica fume (SF) on the compressive strength of concrete. The aim of the study was to investigate the effect of concrete compressive strength containing different percentage levels of metakaoline and silica fume on fresh and mechanical properties of the concrete. Pastes containing 0%, 5%, 10%, 15% and 20% of metakaoline and silica fume …
Published in Journal of Construction Engineering, Technology & Management · Vol. 2, Issue 1-3, 2012 · pp. 42–47 Read article
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Experimental Investigation on Ferrocement Slab Using Steel Fibres and Different Sands
Abstract: Ferrocement is defined as wire mesh reinforcement impregnated with mortar to produce elements of small thickness. An experimental study has been carried out to study the effect of different compositions of cement mortar using 10% fly ash and different percentage of 6–8% silica fumes with two types of sands such as Badarpur sand and river sand and show the effect of load versus deflection curve and flexural strength of ferrocement …
Published in Journal of Structural Engineering and Management · Vol. 4, Issue 2, 2017 · pp. 27–30 Read article
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Experimental Study of Geopolymer Concrete in Construction of Rigid Pavement
Abstract: Geopolymer concrete is an inorganic alumino-silicate polymer. In the present experimental study of geopolymer concrete, the ground granulated blast furnace slag, fly ash, sodium hydroxide solution of molarity 14 and sodium silicate solution of molarity 14 are used to prepare geopolymer concrete mixture. The ground granulated blast furnace slag used here is taken from Jindal Steel and Power Limited, Raigarh. Different proportions of the constituents are mixed to get different …
Published in Trends in Transport Engineering and Applications · Vol. 4, Issue 2, 2017 · pp. 24–29 Read article
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Service Life Prediction of Concretes Incorporated with Ground Granulated Blast Furnace Slag and Icrete with respect to Chloride Ion Penetration
Abstract: The reduced service life of concrete structures in coastal or de-icing salt conditions is commonly attributed to corrosion generated by chloride. Therefore, extensive research is being conducted to estimate the time taken for threshold chloride ions to reach the reinforcement and break the protective layer, initiating the corrosive process. This study conducted an experimental investigation on controlled concrete, concrete incorporating 50% GGBS, and concrete incorporating both 50% GGBS and 2% …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 214–226 Read article
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Experimental Study of Modified M20 Concrete with Waste Plastic Polystyrene Cubes
Abstract: The study of this research paper deals with the effectiveness of waste plastics used in concrete construction. The M20 concrete specimens were mixed with waste plastic material like polystyrene as cubes of different sizes such as 5, 6, 7, 8, 9, and 10 cm and were tested for their compressive strength. The standard size of waste plastic concrete specimens was 15 cm × 15 cm × 15 cm with the …
Published in Recent Trends in Civil Engineering & Technology · Vol. 14, Issue 1, 2024 · pp. 14–19 Read article
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EXPERIMENTAL STUDY ON MECHANICAL AND DURABILITY PROPERTIES OF CONCRETE USING MINERAL ADMIXTURES
Abstract: This study explores the partial replacement of OPC with Fly Ash (FA), Rice Husk Ash (RHA), Glass Powder (GP), Palm Oil Fuel Ash (POFA) at varying percentages of 10%, 20%, 30% with the addition of 1% chemical admixture with water-cement ratio of 0.45. The influence of these replacements on the fresh properties, mechanical and durability properties is evaluated at 7, 28, and 56 days of curing. The results indicate that …
Published in Journal of Polymer & Composites · Vol. 12, Issue 5, 2024 · pp. 148–160 Read article
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Comparison of the Compressive Strength of Concrete Made with Palm Kernel Shell and Gravel as Coarse Aggregates
Abstract: The investigation of alternative materials for the construction, comparison of the compressive strength of concrete made with palm kernel shell as coarse aggregate and concrete made with gravel. A mix proportion of 1:2:4 with water cement ratio of 0.6, ordinary Portland cement, PKS, gravel and sand were used for this research. 24 cubes were cast and tested for compressive strength at 7, A14, 21 and 28 days. The result showed …
Published in Journal of Construction Engineering, Technology & Management · Vol. 12, Issue 1, 2022 · pp. 12–18 Read article
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Experimental Study on Micro Silica Amalgamated High Performance Concrete
Abstract: AbstractIn this paper, an endeavour has been made to swot the effect of micro silica (MS) or silicafume with partial replacement of cement (i.e., 0, 5, 10, 15, 20 and 25%) and also with fullreplacement of natural sand by crusher wash sand (CWS) on strength and durabilityproperties for high performance concrete (HPC) of M50 grade with water cement ratio as0.30. Test results indicate that, the use of MS has improved …
Published in Recent Trends in Civil Engineering & Technology · Vol. 7, Issue 3, 2017 · pp. 46–52 Read article
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Standardization of Cement Mortar by Using GGBS for Plaster Work
Abstract: This study investigates the feasibility of using replacement of natural river sand with 100% crushed sand, and partial replacement of cement with optimum percentage of ground granulated blast furnace slag (GGBS) on site conditions with a proportioned water cement ratio for plaster work. The methodology, which it undergoes, is slump test, compressive strength, flexural strength, split tensile strength. Cubes (70.6 mm 70.6 mm), beams (160 mm 40 mm), …
Published in Recent Trends in Civil Engineering & Technology · Vol. 6, Issue 2, 2016 · pp. 23–29 Read article
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Analytical Determination of Strength of Demolished Recycled Coarse Aggregate
Abstract: Construction work has increased rapidly from the past two decades. With these construction activities going up, we find lacking of the construction materials, particularly aggregates. So, finding an alternate resource and their feasibility; study is the need of our project. Recycled or used aggregate proves to be a good alternative here. Therefore, the investigation was carried out using compressive strength test, confined to the objective we have tested and empirically …
Published in Recent Trends in Civil Engineering & Technology · Vol. 6, Issue 1, 2016 · pp. 1–7 Read article
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Optimizing Pervious Concrete Mix Design for Sustainable Urban Pavements
Abstract: This research explores the comprehensive evaluation of pervious concrete, with a focus on sustainability and performance enhancement. It investigates various factors influencing pervious concrete properties, including cement content, aggregate sizes, water-cement ratio (w/c), and the incorporation of chemical admixtures. The study establishes that an optimal cement content range of 350 kg/m3 to 375 kg/m3 is most effective in achieving the desired balance between workability and essential properties. The research also …
Published in Trends in Transport Engineering and Applications · Vol. 10, Issue 2, 2023 · pp. 23–28 Read article
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Analysis of Fibre Reinforced Beams
Abstract: There has been research into the flexural behaviour of composite beams with a variety of fibre layer depths, all of which were designed using the balancing section and the limit state design idea. The fibre depth is estimated to be 112 mm (d = 112 mm), with the first three dimensions being 94.44 mm (d1 = 94.44 mm), 46.12 mm (d2 = 22.35 mm), and 22.35 mm (d3) respectively. The …
Published in Journal of Polymer & Composites · Vol. 11, Issue 4, 2023 · pp. 53–59 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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Durability Design of Reinforced Concrete Beams Using Cost Minimization by Excel Solver
Abstract: Design procedures based on current specifications do not always ensure required service life, mostly because of the underestimated durability parameters. This is due to the fact that definition of durability is not operational as basis for design, maintenance and repair. This paper presents an Excel spreadsheet model for the cost optimization of simply supported beams designed according to the requirements of the American Concrete Institute (ACI) code and the Japan …
Published in Journal of Construction Engineering, Technology & Management · Vol. 5, Issue 3, 2015 · pp. 75–81 Read article
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Influence of Supplementary Cementitious Materials on Chemical Shrinkage in Cement
Abstract: Chemical shrinkage is the volume reduction observed in cement during early hydration due to chemical reactions, which critically influences the internal stresses, cracking tendencies, and durability of cementitious system. Present study is focused on effect of supplementary cementitious material (SCM) on chemical shrinkage. Dilatometry method is used to assess the impacts of SCMs on chemical shrinkage, in this this study. The research incorporates experiments with laboratory-synthesized cement and three SCMs—fly …
Published in Journal of Polymer & Composites · Vol. 13, Issue 1, 2025 · pp. 98–107 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