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329 articles for “Concrete”
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Enhancing Concrete Sustainability: A Critical Review of Recycled Aggregate Practices
Abstract: The surge in construction material demand, propelled by urbanization, necessitates sustainable wastemanagement strategies. Recycling demolished waste into concrete has gained prominence due toenvironmental concerns and resource depletion. This review consolidates insights gleaned fromvarious studies on the utilization of recycled coarse aggregates (RCA) in concrete. Investigationsreveal that water absorption in RCA depends on adhered mortar quality, impacting mechanicalproperties. Various alternative materials and their mechanical performance are explored, highlightingtheir superiority. Studies emphasize …
Published in International Journal of Construction Engineering and Planning · Vol. 10, Issue 1, 2024 · pp. 7–13 Read article
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Optimizing Concrete Properties with Partial Replacement of River Sand by Used Foundry Sand
Abstract: In response to the scarcity and rising costs of natural river sand, researchers are exploring alternatives like Used Foundry Sand (UFS) to promote sustainable construction practices. This study investigates the partial replacement of river sand with UFS, testing replacement levels from 0% to 25% by weight. Assessing fresh concrete properties and mechanical characteristics, including compressive strength, splitting tensile strength, and flexural strength, the research focuses on M20 and M30 concrete …
Published in International Journal of Concrete Technology · Vol. 10, Issue 1, 2024 Read article
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Fly Ash-based Geopolymer Concrete
Abstract: To reduce greenhouse gas emissions, efforts are needed to develop eco-friendly construction materials. In geopolymer concrete, a by-product material rich in silicon and aluminum, such as low-calcium (American Society for Testing and Materials 618 Class F) fly ash, is chemically activated by a high-alkaline solution to form a paste that binds the loose coarse and fine aggregates, and other unreacted materials in the mixture. The test results show the effects …
Published in International Journal of Sustainable Building Technology · Vol. 2, Issue 2, 2019 · pp. 1–11 Read article
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MATHEMATICAL MODELING OF FLY ASH AND ALCCOFINE PARTIAL REPLACEMENTS OF CEMENT FOR HIGH COMPRESSIVE CONCRETE STRENGTH
Abstract: Mathematical model was applied to monitor the behaviour of partial replacement of cement with alccofine and flyash, alccofine and fly ash was applied to monitor the variation of strength development in different mixed designed, the study applying such concept has observed these two material to generated high strength development more than the normal strength generated applying cement in full dosage, the detailed sources of these substance such as micro finer …
Published in International Journal of Sustainable Building Technology · Vol. 3, Issue 2, 2020 · pp. 38–56 Read article
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Vacuum Dewatering During Concreting: Modern Construction Method
Abstract: In the RCC construction, water–cement ratio is detrimental for concrete. We always try to restrict the water–cement ratio because we want structure achieve its higher strength rather it is necessary for structure life. For the chemical reaction which is generated in cement and water, water–cement ratio of less than 0.38, whereas the adopted water–cement ratio is much more than that mainly because of the requirement of workability. After the requirement …
Published in International Journal of Construction Engineering and Planning · Vol. 3, Issue 1, 2017 · pp. 6–12 Read article
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Performance of Temperature on Compressive and Shear Strength of High Strength Fiber Reinforced Concrete
Abstract: ABSTRACT This paper presents the results of the experimental investigation of various strengths at elevated temperature of high strength fiber reinforced concrete (HSFRC). Variables considered in the research work are various strengths, temperature and fiber volume fractions. Various strengths considered for investigation are compressive strength, shear strength. Concrete mix of M60 grade and crimped steel fibers with aspect ratio 50 are used. The fiber volume fraction is varied from 1 …
Published in International Journal of Construction Engineering and Planning · Vol. 3, Issue 1, 2017 · pp. 13–23 Read article
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Optimization of Compressive Strength of Snail Shell Ash Blended Cement Concrete
Abstract: In this paper, a mathematical model is developed to optimize the compressive strength and the corresponding values of the mixture proportions of snail shell ash blended cement concrete using Scheffe’s regression method.A computer program written in qbasic language was invoked to quicken the selection of the cheapest mix ratios and the corresponding value of compressive strength of concrete. The mix ratio that optimized the compressive strength was found to be …
Published in International Journal of Construction Engineering and Planning · Vol. 6, Issue 2, 2020 · pp. 29–37 Read article
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Review on the Performance of Fibre and Industrial Slag in Concrete
Abstract: This review paper discusses about the different types of fibre used in concrete at different periods with the mix parameter details. This review enlightens the effect of industrial waste such as Bottom ash, Copper slag, Ferro-chromium slag, Ground granulated blast furnace slag (GGBFS), Steel slag, Stainless steel slag as a substitute in concrete. The elaborate study on its chemical composition and also the merits and demerits of using the slag …
Published in International Journal of Concrete Technology · Vol. 1, Issue 1, 2015 · pp. 16–30 Read article
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A Review- State of Art on Hot Weather Concreting and Rheology of Cement-Based Materials
Abstract: The objective of this paper is to explore the important mechanisms that control the rheology of cement based materials under hot weather conditions. The effect of hot weather on the fresh and mechanical properties of concrete was investigated. The paper presents some of the practices taken to alleviate the effects of hot weather on concreting. The rheological properties of Portland cement paste and concrete were discussed using both the conventional …
Published in International Journal of Concrete Technology · Vol. 1, Issue 1, 2015 · pp. 49–62 Read article
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Effect of Replacing Rice Husk Ash with Cement and Granulated Blast Furnace Slag with Fine Aggregates on High Performance Concrete
Abstract: Cement and sand are the basic materials for any concrete construction. Now a day’s due to erosion of rivers and considering environmental issues, there is a scarcity of river sand. Many researchers are finding different materials to replace sand and one of the major materials considered in this study is granulated blast furnace slag (GBFS). In recent times, instead of cement many alternative materials are being used as the binding …
Published in International Journal of Concrete Technology · Vol. 2, Issue 2, 2016 · pp. 30–35 Read article
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Effect of Colloidal Nanosilica on High Strength Rice Husk Ash Concrete
Abstract: Nowadays, supplementary cementitious materials (SCMs) are used in concrete because it reduces CO2 emission during. The husks, which are production of cement, reduces cement contents, improve workability, increase strength and enhance durability. Pozzolanic reaction takes place when siliceous or aluminous material comes in contact with calcium hydroxide in the presence of moisture to form compounds possessing cementitious properties approximately 50 percent cellulose, 30 percent lignin and 20 percent silica, are …
Published in International Journal of Concrete Technology · Vol. 3, Issue 1, 2017 · pp. 33–43 Read article
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A Review on Experimental Investigation of Fibre Reinforced Metakaolin-Based Geopolymer Concrete
Abstract: The development of new binders, as an alternative to Portland cement (PC), by alkaline activation, is a current researcher’s interest. As Concrete is the most commonly used material for construction. The worldwide production of cement has greatly increased after 1990. Production of cement results in a lot of environmental pollution as it involves the emission of CO2 gas. There are many ways to which we can reduce environmental pollution (carbon …
Published in International Journal of Concrete Technology · Vol. 3, Issue 1, 2017 · pp. 44–55 Read article
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Modulus of Elasticity of Steel Fiber Reinforced Concrete with Metakaolin
Abstract: In this paper the attempt has been made to study the results of an experimental investigation using steel fiber (SF) and metakaolin (MK) on the properties of structural concrete. Crimped steel fibers of aspect ratio 85 and MK were used in this investigation. The effects of these fiber and MK on workability, density, and on various strengths of M60 grade concrete are studied. Fiber content varies from 2.5% to 10% …
Published in International Journal of Concrete Technology · Vol. 3, Issue 2, 2017 · pp. 50–59 Read article
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Mechanical Properties of sand blasting residue concrete
Abstract: Sand Blasting Residue (SBR) form chain manufacturing companies as a large massive by-product. Steel-slag hydrated matrix is made of ground granulated blast furnace slag powder & steel-making slag which is the by-product of iron manufacturing. This type of construction material is called environmental conscious material in Japan. This research presented that the strength of steel-slag hydrated matrix depends on the pH of the steel-slag hydrated matrix after mixing. Firstly, cement, …
Published in International Journal of Concrete Technology · Vol. 6, Issue 2, 2020 · pp. 46–52 Read article
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Review on segregation resistance of self compacting concrete
Abstract: In order to produce thin precast elements, a self-compacting concrete was prepared. While assembling these components, homogenously scattered steel strands rather than normal steel-building up network were added to the substantial combination at a dose of 10% by mass of concrete. A sufficient substantial strength class was accomplished with a water to solidify proportion of 0.40..Extensive test programs of SCC with differences in water – binder proportions, glue volumes, mixes …
Published in International Journal of Concrete Technology · Vol. 8, Issue 1, 2022 · pp. 17–20 Read article
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Compressive Strength and Chloride penetration on Semi-Lightweight Concrete Made Up of Artificial Aggregates
Abstract: This paper deals with the properties of semi-Light weight concrete prepared by using Light weight wood ash pellets as coarse aggregates. It can be prepared by varying the cement content from 300 to 450 kg/m3. Optimum design mix can be finalised by studying the engineering properties such as compressive strength, split tensile strength, young’s modulus and rapid chloride penetration test. Various trial mixes have been attempted in the laboratory by …
Published in International Journal of Concrete Technology · Vol. 9, Issue 2, 2023 · pp. 14–25 Read article
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Strain Life Approach for the Fatigue Evolution Model of Concrete under Constant Amplitude Bending Fatigue Loading
Abstract: Strain life approach for the fatigue evolution model of concrete under constant amplitude bending fatigue loading plays a very important role in the material properties such as the fatigue strain, fatigue modulus and fatigue damage, presented in this paper by the nonlinear fatigue evolution model, and the hypothesis of recycle-ratio-related fatigue strain amplitude that causes stiffness degradation and inelastic deformation. The fatigue evolution model of concrete under constant amplitude bending …
Published in International Journal of Structural Engineering and Analysis · Vol. 5, Issue 1, 2019 · pp. 35–60 Read article
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Influence of Moisture Damage on Resilient Modulus of Asphalt Concrete
Abstract: Deterioration of asphalt concrete pavement by the action of moisture damage is a major problem facing the serviceability and durability of flexible pavement, it starts with micro cracking of the pavement surface due to load repetitions, and followed by stripping and disintegration of pavement layer. In this investigation, the influence of moisture damage on resilient modulus of asphalt concrete had been assessed under repeated tensile and shear stresses. Asphalt concrete …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 2, Issue 2, 2016 · pp. 12–19 Read article
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An Investigation into the Mechanical and Strength Properties of Rubberized Asphalt Concrete
Abstract: In this study, the suitability of large rubber chunks from shredded tires as aggregates in cold mixes for road construction is investigated. The rubber was used as an additive to the asphalt binder. Thirty percent of rubber by weight was introduced into the binder at a higher temperature and the rubber was allowed to react with the binder. It was shown among other findings that for various particle sizes, the …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 4, Issue 1, 2018 · pp. 11–16 Read article
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Dynamic Behaviour of Steel-Concrete Composite Bridge under Moving Loads
Abstract: Composite structure is a structure which is constructed using multiple dissimilar materials. The construction is called composite when two different types of materials are strongly bond together to act as a single unit. For a composite bridge deck a reinforced concrete slab is placed on the steel plate girder to form a complete structure. Use of composite structure has widely grown in the 21st century. This paper gives the brief …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 8, Issue 1, 2022 · pp. 40–47 Read article