Which material can we use to replace for coarse aggregates?

Coconut shells can be available in adequate quantity. According to study on coconut shell concrete it is found that the course aggregate in concrete can be replaced by coconut shell and it gives 65\% strength that of conventional concrete.

What can replace aggregate?

Other Substitutes of Aggregates in Concrete

• Rice husk.
• Sawdust.
• Oyster Shell.
• Tobacco waste.
• Groundnut shell.
• Cork.
• Sugarcane Bagasse Ash.

What is coarse aggregate material?

Coarse aggregates refer to irregular and granular materials such as sand, gravel, or crushed stone, and are used for making concrete. In most cases, Coarse is naturally occurring and can be obtained by blasting quarries or crushing them by hand or crushers.

Which of the following materials is commonly used as coarse aggregate as part of a concrete mixture?

Gravels constitute the majority of coarse aggregate used in concrete with crushed stone making up most of the remainder. Natural gravel and sand are usually dug or dredged from a pit, river, lake, or seabed. Crushed aggregate is produced by crushing quarry rock, boulders, cobbles, or large-size gravel.

What are the artificial aggregates?

Explanation: Artificial aggregate are those obtained by mechanically crushing rocks, boulders, or cobbles. Normally angular in shape and have rough surface texture.

What can replace aggregate concrete?

Other than finding substitutes for cement, replacing aggregate materials with recyclable and reusable resources is an effective strategy used to minimize greenhouse emissions caused by traditional concrete. Some aggregate alternatives include paper/fiber, waste plastic, post-consumer glass, and concrete debris.

What are artificial aggregates?

Explanation: Artificial aggregate are those obtained by mechanically crushing rocks, boulders, or cobbles. Normally angular in shape and have rough surface texture. Size, shape, Specific gravity, grading are the properties of aggregates.

Is sand a coarse aggregate?

Coarse aggregates are the particles that retain on 4.75 mm sieve. Sand, surki, stone screenings, burnt clays, cinders, fly ash, etc are used as fine aggregate in concrete. Dolomite aggregates, crushed gravel or stone, natural disintegration of rock are the major sources of coarse aggregate.

What are aggregate products?

Aggregate materials are obtained from natural mines of sand or sand and gravel, quarries, deposits, and underground sediments. Examples of aggregate materials include: Crushed rock – These products are obtained by extracting rocks and crushing them to the desired size and texture.

Which of the following materials is commonly used as coarse aggregate as part of a concrete mixture 257?

Type V—For use when high sulfate resistance is desired. An admixture that causes a controlled quantity of stable microscopic air bubbles to form in concrete or mortar during mixing, usually for the purposes of increasing workability and resistance to ‘freeze-thaw’ conditions.

What are the alternative materials for coarse aggregate in concrete?

Theare various alternative materials for coarse aggregate such as wastes of plastic, glass rubber, coconut shell, construction waste, quarry dust etc. can be used as replcememnt of coarse aggregate in concrete What Is Coarse Aggregate?

What is coarse aggregate?

Coarse Aggregate Replcement Aggregate is an important part of the concrete and acts as inert material in concrete. Coarse aggregates are uneven and granular materials such as gravel, sand, or crushed stone, and are utilized for making concrete. As concrete demand a nd conumption is increased rapidly demand of natural aggregate also rised.

Can the coconut shell be used as a coarse aggregate in concrete?

The coconut shell can be used as a coarse aggregate in concrete. It has functional resistance capacity against crushing, impact & abrasion. There is no special treatment required for coconut shells when used as coarse aggregate in concrete.

What can be used as a substitute for concrete?

cement can be replaced in certain percentage by mineral admixtures such as GGBS, micro-silica and rice husk. Complete or Partial replacement in any one of the components of concrete depends on the design requirement and availability of the substitute at site. Replacement of coarse aggregate is very hard to do.