SEA SAND AS FINE AGGREGATE FOR CONCRETE PRODUCTION SAMRAJ P ME (CMASE) Under the guidance of Dr.V.NAGARAJAN fOBJECTIVE • To find out a suitable method to reduce the salinity in the sand to the permissible level and to study the properties of concrete made with sea sand. • An attempt has been made to find the optimum replacement percentage
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Aggregates • Fine Consists of natural sand, manufactured sand or crushed stone
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The diameter of the sand particles ranges from 0.075mm to 4,75mm. The sand is used as the fine aggregates for the purpose of concrete making. 2.Gravel. The gravel is another type of aggregates and is mainly used for as coarse aggregates in concrete. Bank gravel, bench gravel and crushed stone are the examples of gravel.
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Aggregates • Fine Consists of natural sand, manufactured sand or crushed stone
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Artificial sand is the general name of mechanism sand and mixed sand after soil removal treatment. Let''s give an insight into the details. Fine aggregate (sand) Rock particles with particle size between 0.15 mm and 4.75 mm are fine aggregate, commonly known as sand. They are divided into natural sand and artificial sand according to their sources.
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2.1.1 JVuttrral Sand - Fine aggregate resulting from the natural disinteg- ration of rock and which has been deposited by streams or glacial agencies. 2.1.2 Crushed Stone Sand - Fine aggregate produced by crushing hard stone. 2.1.3 Crushed Grace1 Sand - line aggregate produced by crushing natural gravel. .
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Artificial sand, also called crushed sand or mechanical sand (m sand), refers to rocks, mine tailings or industrial waste granules with a particle size of less than 4.75 mm. It is processed by mechanical crushing and sieving. In China, the artificial sand was mainly used in the construction of hydropower systems.
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The material used to produce artificial of aggregate is Portland cement, clay soil, rice husk ash, fine aggregate (sand) and water. Then, as comparison, normal concrete was made at 25 MPa concrete strength with Portland cement material, fine aggregate (sand), coarse aggregate (gravel) and water.
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3.Shape of fine aggregates: Irregularly nodular shaped sand is preferable to completely round grained sand. The shape of the aggregate plays a more important role in the coarse aggregate than in the fine aggregate. 4.Specific Gravity: The specific gravity of aggregates is the ratio of the density of water to its density.
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In this percentage 40 to 50 % proportion of aggregate is fine aggregate (sand). Fine aggregate selection plays vital role in concrete performance and its cost. Lately the need for replacing sand with alternative materials have picked governing serious environmental impact of dredging sand from river bed, also there is huge demand and supply gap
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Fines Separator for Aggregates, Sand & Minerals In construction industries stone metal (Crushed stone) is main ingredient for cement concrete. In crushing process fine dust below 75 micron is generated . Fine dust is having more surface area hence requires more water. It increases water cement ratio.
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Artificial Fine Aggregate: In this paper, artificial fine aggregate is totally replaced as fine aggregates which is procured from Hyderabad, with different sizes that passing through 4.75mm, 2.36mm, 1.18mm, 600µ, 300µ and 150µ. The properties of Artificial Fine Aggregate are shown in Table 2.
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IS 383:1970 (Reaffirmed 2002) lays the guidelines for coarse and fine natural aggregates. Artificial aggregates are produced from materials that are produced through an artificial process. Examples of artificial aggregates are broken bricks, burnt-clay aggregate, blast furnace slag, and synthetic aggregates.
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Many studies have examined the influence of the partial replacement of fine aggregate in concrete using crusher dusts or small crushed sand samples on concrete properties [8,12,13]. However, little work has been performed on the complete replacement of natural fine aggregate in concrete with crusher dusts.
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Fine aggregates are essentially any natural sand particles won from the land through the mining process. Fine aggregates consist of natural sand or any crushed stone particles that are ¼” or smaller.This product is often referred to as 1/4’” minus as it refers to the size, or grading, of this particular aggregate.
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In this paper, the waste concrete is used to produce recycled fine aggregate, and then different mixing quantities are used to produce ordinary mortar by replacing artificial sand. The paper makes relevant studies on the influence of the recycled fine aggregate quantity on the performance of ordinary mortar. The studies show that it is feasible to produce ordinary mortar with a certain amount
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A study [7] concluded that an optimum volume fraction of steel fiber of 1.5% is recommended for fiber-reinforced concrete with artificial and natural sand as fine aggregate. This research
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Natural aggregates are obtained by mining sand and stone, which are then crushed, washed and sorted. Waste silt is produced at typical aggregate washing plants at between 5 and 80 ton per hour depending on plant size and materials being processed. In general, 10–15% of the raw sand and stone will become waste silt.
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proven to be highest compressible strength fine aggregate as compared to Natural Sand, Artificial Sand & combina-tion of Natural Sand & Artificial Sand. In case of Beam the ultimate load for Artificial Sand is found to be maximum of 32KN with deflection 2.96mm and that of Grit with minimum ultimate load of 30KN with def-lection 2.60mm.
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Fine aggregates are essentially any natural sand particles won from the land through the mining process. Fine aggregates consist of natural sand or any crushed stone particles that are ¼” or smaller.This product is often referred to as 1/4’” minus as it refers to the size, or grading, of this particular aggregate.
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used as the replacement of fine aggregate in the concrete. Concrete cube and beam were casted taking 10% to 25% of plastic as partial replacement of fine aggregate and tested for 28 days of compressive strength and flexural strength of concrete. 1. INTRODUCTION . The research in to new and innovative waste materials being under taken world-
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The concept of replacement of natural fine aggregate by quarry dust which is highlighted in the study could boost the consumption of quarry dust generated from quarries. By replacement of quarry dust, the requirement of land fill area can be reduced and can also solve the problem of natural sand scarcity. The availability of sand at low cost as a fine aggregate in concrete is not suitable and
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To make sure a smooth sub-base is provided, the gravel needs to becompacted and then dressed with a low level of sand or fine aggregate. Is it possible to lay artificial grass on slopes? Yes, that is correct. What can I use as a sub-base for artificial grass? crushed granite stone is the most common sub- base option. This can be referred to as
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What is Artificial Sand. Artificial sand be called manufactured sand or crushed sand, Its source is a quarry. It is manufactured by Crushing rocks, quarry stones or larger aggregate pieces into sand size particles in a factory or quarry. Artificial Sand vs. Natural Sand
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Mortar Sand is a washed fine grade sand commonly for under pavers, for masonry and stucco applications. A fine crushed sand used under pavers, flagstone, artificial turf or play pools. Aggregate is a mix of sand and rock and is used for making concrete; just add the water and cement.
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3. Varieties of Artificial Stones The different varieties of artificial stones are: a. Cement Concrete Blocks ~ These are made from a mixture of cement, fine aggregate, coarse aggregate and water. They may be cast-in-situ or cast-in-moulds (Note: cast in situ is used in the construction of piers and cast in the mould is used for steps, window
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Method Artificial aggregate production. In general, artificial aggregate means lightweight aggregate and undergoes a firing process. Because the developed aggregate is intended to replace the general aggregate rather than replacing another artificial aggregate, the selection criteria for mixing included a water absorption rate of less than 5% and a specific gravity higher than 2.2; the ratio
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The specifications of the artificial sand are divided into four types: coarse, medium, fine and extra-fine according to the fineness modulus: Various specifications of artificial sand 1 The fineness modulus of coarse sand is 3.7-3.1, and the average particle size is 0.5mm or more.
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The material used to produce artificial of aggregate is Portland cement, clay soil, rice husk ash, fine aggregate (sand) and water. Then, as comparison, normal concrete was made at 25 MPa concrete strength with Portland cement material, fine aggregate (sand), coarse aggregate (gravel) and water.
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rubbers were used to replace coarse aggregates and river sand as fine aggregate. Furthermore, in rubber filler in concrete, crushed stone was used as coarse aggregate and river sand as fine aggregate. Coarse aggregate usually gravel or crushed stone and shredded rubber as filler in concrete. 2.5 F. A.
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