The increasing annual emissions of iron ore tailings have proved a great threat to the natural environment, and the shortage of natural river sand, as well as the pursuit of sustainable development materials, provides motivation to reuse iron ore tailings as a fine aggregate in concrete. Due to the …
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Others are developing concrete that requires less sand, while researchers are also looking at more effective ways to grind down and recycle concrete. In many Western countries, river sand mining ...
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River Sand is a natural sand that is made from weathering or erosion processes, unlike other sands that are made from crushing rock. River Sand can vary in gradation but is typically coarse sand. It can be used in all types of landscaping and construction projects including concrete sand, drainage areas, arena footing and soil …
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The paper presents results of study on concrete using quarry dust to replace sand at levels of 0%, 25%, and by weight. Design mixes were prepared to achieve concrete grades C25, C30, C35, C40 ...
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Natural river sand is preferred as fine aggregate. A large percentage of concrete comprises fine aggregates and hence river sand is over-mined due to the higher demand in the construction sector. ... Research studies confirmed that granite dust could possibly be used as a replacement for natural sand in concrete, as the mechanical …
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WFS can be used up to 30% substitution instead of natural river sand with no harmful influence on concrete strength. This is owing to the micro filling which provides more dense concrete, leading to more resistance to load. However, a decrease in strength was observed at a higher dose of WFS (beyond 50%).
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The artificial sand produced by proper machines can be a better substitute to river sand. The sand must be of proper gradation (it should have particles from 150 microns to 4.75 mm in proper proportion). When fine particles are in …
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Masonry sand is a much finer and more uniform type of sand that has very small grains. As such, masonry sands have the ability to create a smooth, finished surface when used in mortar and concrete mixes. Concrete sand has larger grains that are much coarser than masonry sand. The larger grains are what give concrete mixes added …
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One such material is crushed rock fines; it would be shown better performances with concrete by replacing the natural river sand by 50% replacement. This review paper has given the analysis of ...
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River sand is usually used in foundations, while concrete sand is used to make concrete and mortar. M-sand is an artificial version of natural sand and can make stronger structures, while fill sand and utility sand have …
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Courtesy: connect2india. Pit sand is a type of sand that comes from pits or mines, which are natural places where sand is found. It is often used in building projects and civil engineering work. Compared to other types of sand, like river or beach sand, pit sand is usually more coarse.
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Concrete is the most used material after water. Concrete is made of cementing material, coarse aggregate, fine aggregate and water. The coarse and fine aggregates make about 70% of concrete. Till present natural river sand was the only material that was used as fine aggregate, but as it is a natural resource, it is limited.
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Many researchers, after extensive studies, suggested the use of used foundry sand in concrete as a replacement material of natural river sand. 1.1 Used Foundry Sand. Foundry sand is accounted for as siliceous material and having even physical standards. It is an incidental waste product most commonly obtained from metal …
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The use of natural river sand is increasing as the construction industry continues to grow. The construction sectors projects was halted in half due to unavailability of natural river …
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The concrete mix M4 (50% sea sand + 50% quarry dust) is determined as optimum mix for complete replacement of river sand. The compressive strength of M4 mix is 38.7 ± 0.19 MPa.
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Potential primary sand sources crushed and round river concrete quartz sand and m-sand substitutes in form of rushed solid rocks: marble, amphibolite, …
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In contrast, Parasha et al. used WFS as a partial alternative for natural river sand in concrete in proportions of 0, 10, 20, 30, and 40%. Results indicate that concrete compressive strength is decreased when WFS is substituted. Its fine and porous nature accounts for the decrease of compressive capacity when (WFS) is included. (WFS) …
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River sand is often used in concrete mixes and mortars. Some common uses of river sand include: Concrete production; Mortar mixes; Landscaping and gardening; Pit sand. Pit sand is a natural sand that is found in pits or quarries. It is typically coarser-grained than river sand and may contain impurities such as clay or silt.
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The Concrete is a mixture which generally consists of cement, fine aggregate, coarse aggregate and water. Natural river sand is the most commonly used material as fine aggregate in concrete.
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1.1 Demand on Natural River Sand. The use of natural river sand is increasing as the construction industry continues to grow. The construction sectors projects was halted in half due to unavailability of natural river sand. Using an alternative to natural river sand in concrete can provide solutions to problems of waste …
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Based on the grain size of the particle, sand is classified as Fine Sand (0.075 to 0.425mm), Medium Sand (0.425 to 2mm), and Coarse Sand (2.0 mm to 4.75mm) Based on origin, sand is classified as Pit sand, River sand, Sea sand, and manufactured sand. Fig. Grain size distribution of sand used in building construction.
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The resulting product is cubical in shape and possesses similar properties to natural river sand. M sand is often preferred for construction projects due to its consistent quality, availability, and minimal impurities. ... The angular particles of M sand also reduce the risk of shrinkage cracks in concrete. 3) Consistency River sand is prone to ...
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Stone dust is a waste material obtained from crusher plants. It has potential to be used as partial replacement of natural river sand in concrete. Use of stone dust in concrete not only improve ...
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Glass powder residue was used to replace sand in concrete at percentages of 12%, 22%, and 32%. A comparison of the compressive, split-tensile, and flexural test of 8- to 29-day-old concrete built from natural fine aggregates was produced. The findings of this study show that substituting glass waste dust with natural sand increases durability ...
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River Sand: Extracted from riverbeds, river sand is a common natural fine aggregate. It is often well-rounded and has a variety of particle sizes. However, indiscriminate sand mining from rivers can lead to environmental concerns and ecological imbalances. ... Coarse sand is often used in concrete for its ability to provide bulk and …
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Apart from its use in concrete production, river sand is also used in a variety of other applications, including: 1) Landscaping: River sand is used in landscaping projects to create artificial beaches, riverbeds, and water features [27] [28] . 2) Glass manufacturing: River sand is an important raw material for glass manufacturing [29] [30] .
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River sand, also known as natural sand, is a vital material used in various construction applications. Its unique properties make it a preferred choice for builders …
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Sand river is a key material source for building sector including concrete industry in addition to gravel, cement, and water. However, unsound exploitation of such …
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In this study, we have used grit and crushed sand for the design mix and found the characteristic compressive strength at 3,7 and 28 days respectively. ... The results of mix design indicate that crushed sand can also make as good a concrete as that made of natural sand.The compressive strength obtained is same as of normal mixes.In fact use …
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Using an alternative to natural river sand in concrete can provide solutions to problems of waste management, environmental degradation and reduction of natural …
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Gravel and natural river sand which are used as coarse and fine aggregate in concrete. Many years required for procurement of natural river sand (Reddy, 2012) Over exploitation
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Also called natural sand, river sand is categorized as fine sand and is usually found near streams and river banks. The softness of river sand allows for its …
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The incorporation of desert sand as a viable alternative to natural sand in the construction sector emerges as a prevailing avenue for diminishing overall …
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Also, the use of quarry dust as the fine aggregate decreases the cost of concrete production in terms of the partial replacement for natural river sand. Design mix of M25grade concrete with ...
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Natural river sand (NRS) is the main fine aggregate being used from long time now. ... This work is focused on the use of quarry dust as a total replacement to river sand in the production of concrete, and comparing the results (compressive strength) to that obtained from conversional concrete made with river sand. Download Free PDF View PDF.
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