alternatives for fine aggregates in concrete

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Alternative fine aggregates in production of sustainable ...

20/09/2020  Utilization of alternative fine aggregates is the hour of need for sustainable construction. ... Nowadays, utilization of RFA as a replacement to fine aggregates in concrete is being popularised. Major sources for RFA are concrete, bricks, glass, bitumen from the construction industry. Researchers have reported that RFA tends to require more water and superplasticizer than river sand to obtain ...

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Concrete aggregate alternatives - Appropedia: The ...

10/05/2021  Cement is only one of the five ingredients used in a concrete mixture. With proper ratios of cement, rock, fine aggregate, air, and water, the EPA further cites that the previously mentioned amount of cement would be enough to produce 14 - 18 Gt of concrete making it the most manufactured material in the world. The earliest use of concrete in the United States involved the construction of the ...

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Alternative fine aggregates in production of sustainable ...

The alternative fine aggregates satisfies the requirements as alternatives to river sand. ... The massive use of concrete due to boom in various infrastructure development has led to over-extraction of river sand from the riverbed. This has called for several harmful consequences of ecosystem and non-availability of good quality of raw materials. Disposal of industrial wastes and construction ...

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What are other alternatives for aggregates in concrete ...

1) EPS: Expanded Polystyrene plays a very unique role in concrete. Research has shown that concrete with this material behaves very similarly to light weight concretes containing traditional aggregates. This is believed to be the case because the ...

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What are the Materials for Replacement of Sand in Concrete ...

Aggregate occupy about 60 – 70% volume of concrete. 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 ...

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Top 5 alternative materials to concrete - Building Centre

15/01/2019  5 alternatives to concrete: Mogu, Finite, Corcrete, CarbonCure and Made of Air . Chatham House recently reported that approximately eight per cent of the world’s annual carbon dioxide emissions is due to concrete production.The process used to create the cement requires a high-temperature kiln which contributes to CO2 emissions. In light of this report, it is vital to not only use recyclable ...

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alternatives for sand as fine aggregate

With increased ban of river sand, here are the alternatives that can be used for replacing river sand in concrete mix. Read to know the materials for replacement of sand in concrete 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.

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Can someone suggest an alternative of sand as a fine ...

Knowledge Institute of Technology. Manufactured sand blended with natural sand in the ratio of 70:30 can be used as fine aggregate in concrete, which shows the better performance than conventional ...

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Eco-Friendly Alternatives To Traditional Concrete ...

18/07/2019  Posted on July 18, 2019. Concrete is a mixture of cement, gravel, sand, water and a range of aggregates. With about 10 billion tons of concrete produced every year, it is the most consumed substance in the world, second only to water.. It is also the world’s most widely used material for construction – from bridges to large buildings, concrete forms the very foundation of our infrastructure.

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Exploring The Synthetic Aggregates Alternative Agg-Net

A 2001 TRB paper co-authored by Dr Swan, ‘Lightweight Fly Ash/Plastic Aggregates in Concrete’, shows that lightweight concrete can be manufactured with fly ash/plastic synthetic lightweight aggregates, although the strengths were relatively low in comparison to equivalent batches of concrete with traditional lightweight and normal weight aggregates.

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Replacement of Fine Aggregate by M-Sand

concrete manufacturers to look for suitable alternative fine aggregate. One such alternative is “manufactured sand”. Workability strength and durability of concrete with manufactured sand as replacement to natural sand in proportions of 0%, 5%, 10%, 15%, 20% and 25% is studied. The experiments were conducted on M20 concrete grade. Slump cone test is conducted to determine

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Concrete Debris as Alternative Fine Aggregate for ...

05/02/2012  The design mixtures of crushed concrete debris as alternative fine aggregate for architectural finishing mortar are: (1) a mixture of 1:2 ½ ratio of cement to concrete debris, and (2) addition of water to obtain good flow. ACKNOWLEDGEMENTS The writer wish to express his sincere gratitude and deep appreciation to his former colleagues in FEATI University and Auckland University

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Replacement Of Coarse Aggregate In Concrete - [Civil Planets]

The size of fine aggregate particles is less than 4.75mm. ... So experts are desperately looking for a suitable alternative for coarse aggregate—the low cost and lightweight, which does not affect nature much. We have already started using M sand instead of river sand. The natural or synthetic lightweight aggregates make lightweight concrete. It is a low cost along with excellent durability ...

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Partial Replacement of Fine Aggregate in Concrete by Tyre ...

04/03/2020  Crumb rubber was used in the concrete mix to partially substitute for fine aggregate (sand) in various percentages of 20%, 40%, 60%, 80%, 100%. For each mix, cubes of 100x100x100 mm, cylinders of 150mm diameter by 300mm height, and small beams of 100x100x400 mm were prepared. All specimens were fabricated and then cured in water for 28 days in accordance with ASTM/C192M-06

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Concrete: Cement Substitutes - GGBS, PFA and more

It is an extremely fine powder (as fine as smoke) and therefore it is used in concrete production in either a densified or slurry form. Due to economic considerations, the use of silica fume is generally limited to high strength concretes or concretes in aggressive environmental conditions. The most commonly used proportion of silica fume in UK - produced combinations is 10% by mass of total ...

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Eco-Friendly Alternatives To Traditional Concrete ...

18/07/2019  Posted on July 18, 2019. Concrete is a mixture of cement, gravel, sand, water and a range of aggregates. With about 10 billion tons of concrete produced every year, it is the most consumed substance in the world, second only to water.. It is also the world’s most widely used material for construction – from bridges to large buildings, concrete forms the very foundation of our infrastructure.

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Egg Shell As A Fine Aggregate In Concrete For Sustainable ...

The usedegg shells were used as fine concrete aggregate. In the laboratory test, conventional fine aggregate was replaced at 100% replacement level. A total of 18 cubes were cast, cured and tested. The strength development of the concrete mixes containing egg shell aggregates was compared to that of conventional concrete with sand as fine aggregate. The result showed a reduction in compressive ...

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EXPERIMENTAL STUDY ON CONCRETE USING SEA SAND AS FINE ...

for the fine aggregate component of concrete in the past, but overuse of the material has led to environmental concerns, the depleting of securable river sand deposits and a concomitant price increase in the material. Therefore, it is desirable to obtain cheap, environmentally friendly substitutes for river sand that is preferably sea sand. The Land Reclamation and Development Board (Sri Lanka ...

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British Standards and the use of recycled aggregate in ...

fine aggregates and conform to EN 12620. (4) Where the quantities of the reclaimed crushed aggregates are greater than 5 % by mass of the total aggregate they shall be treated as recycled aggregates. BS EN 206:2013+A1:2016. Slide 6. 3.1.2.16. recycled aggregate. aggregate resulting from the processing of inorganic material previously used in construction. 5.2.3.4 Recycled aggregates (1 ...

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HOW FINE AGGREGATES AFEECTS CONCRETE MIX DESIGN

🕑 Reading time: 1 minute Fine aggregate is on of the major constituents of concrete which can influence concrete mix design substantially. Various factors such as fine aggregate fineness modulus, moisture content, specific gravity, and silt content affect the mix proportions of concrete. Fineness modulus specifies how much fine aggregate is required in a given []

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Replacement of Fine Aggregate by M-Sand

concrete manufacturers to look for suitable alternative fine aggregate. One such alternative is “manufactured sand”. Workability strength and durability of concrete with manufactured sand as replacement to natural sand in proportions of 0%, 5%, 10%, 15%, 20% and 25% is studied. The experiments were conducted on M20 concrete grade. Slump cone test is conducted to determine

Get price

Concrete Debris as Alternative Fine Aggregate for ...

05/02/2012  The design mixtures of crushed concrete debris as alternative fine aggregate for architectural finishing mortar are: (1) a mixture of 1:2 ½ ratio of cement to concrete debris, and (2) addition of water to obtain good flow. ACKNOWLEDGEMENTS The writer wish to express his sincere gratitude and deep appreciation to his former colleagues in FEATI University and Auckland University

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alternative of fine aggregates in concrete pdf

Alternative Aggregates for Sustainable Concrete Regarding the alternative aggregates Concrete with fine RCAs d... Aggregates. Aggregates are inert granular materials such as sand gravel or crushed stone that along with water and portland cement are an essential ingredient in concrete... Effect of Sawdust as Fine Aggregate in Concrete Mixture . Effect of Sawdust as Fine Aggregate in Concrete ...

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Partial Replacement of Fine Aggregate in Concrete by Tyre ...

04/03/2020  Crumb rubber was used in the concrete mix to partially substitute for fine aggregate (sand) in various percentages of 20%, 40%, 60%, 80%, 100%. For each mix, cubes of 100x100x100 mm, cylinders of 150mm diameter by 300mm height, and small beams of 100x100x400 mm were prepared. All specimens were fabricated and then cured in water for 28 days in accordance with ASTM/C192M-06

Get price

Concrete: Cement Substitutes - GGBS, PFA and more

It is an extremely fine powder (as fine as smoke) and therefore it is used in concrete production in either a densified or slurry form. Due to economic considerations, the use of silica fume is generally limited to high strength concretes or concretes in aggressive environmental conditions. The most commonly used proportion of silica fume in UK - produced combinations is 10% by mass of total ...

Get price

Eco-Friendly Alternatives To Traditional Concrete ...

18/07/2019  Posted on July 18, 2019. Concrete is a mixture of cement, gravel, sand, water and a range of aggregates. With about 10 billion tons of concrete produced every year, it is the most consumed substance in the world, second only to water.. It is also the world’s most widely used material for construction – from bridges to large buildings, concrete forms the very foundation of our infrastructure.

Get price

EXPERIMENTAL STUDY ON CONCRETE USING SEA SAND AS FINE ...

for the fine aggregate component of concrete in the past, but overuse of the material has led to environmental concerns, the depleting of securable river sand deposits and a concomitant price increase in the material. Therefore, it is desirable to obtain cheap, environmentally friendly substitutes for river sand that is preferably sea sand. The Land Reclamation and Development Board (Sri Lanka ...

Get price

Aggregates for Concrete - Greenspec

- Fine aggregates are usually sand or crushed stone that are less than 9.55mm in diameter. • Typically the most common size of aggregate used in construction is 20mm. A larger size, 40mm, is more common in mass concrete. • Larger aggregate diameters reduce the quantity of cement and water needed. 20 mm aggregate . Common aggregates • Crushed Stone and Manufactured Sand. Stone is

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British Standards and the use of recycled aggregate in ...

fine aggregates and conform to EN 12620. (4) Where the quantities of the reclaimed crushed aggregates are greater than 5 % by mass of the total aggregate they shall be treated as recycled aggregates. BS EN 206:2013+A1:2016. Slide 6. 3.1.2.16. recycled aggregate. aggregate resulting from the processing of inorganic material previously used in construction. 5.2.3.4 Recycled aggregates (1 ...

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Use of sea sand as fine aggregate in concrete making

Concrete is a mixture of cement, coarse aggregates, fine aggregates or sand and water. The approximate ratios of these components are as below: Based on the ratios and the anticipated cement consumption in the country, the expected requirement of sand

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