What is fine aggregate in civil engineering?
Fine aggregates are small size filler materials in construction. Coarse aggregates are larger size filler materials in construction. Fine aggregates are the particles that pass through 4.75 mm sieve and retain on 0.075 mm sieve. The surface area of fine aggregates is higher.
What is fine aggregate in concrete?
Functions Of Fine Aggregate in Concrete 1. It assists in producing workability and uniformly in mixture. 2. It assists the cement paste to hard the coarse aggregate particles.
What are the properties of fine aggregates?
Qualities of fine aggregates:
- Fine aggregate should be clean i.e. it should be free from lumps, organic material, etc.
- It should be strong and durable.
- It should not react with cement after mixing.
- Also, it should have a tough floor.
- It should not absorb greater than 5% of water.
What is fine aggregate size?
The size of fine aggregates is defined as 4.75mm or smaller. That is, aggregates which can be passed through a number 4 sieve, with a mesh size of 4.75mm. Fine aggregates include things such as sand, silt and clay. Typically, fine aggregates are used to improve workability of a concrete mix.
What are the types of fine aggregate?
Types of Fine Aggregate
- Coral Sand.
- Glass Sand.
- Immature Sand.
- Gypsum Sand.
- Ooid Sand.
- Silica Sand.
- Pit Sand.
- River Sand.
What is the difference between fine and coarse aggregates?
Fine aggregates generally consist of natural sand or crushed stone with most particles passing through a 3/8-inch sieve. Coarse aggregates are any particles greater than 0.19 inch, but generally range between 3/8 and 1.5 inches in diameter. Consequently, selection of aggregates is an important process.
What is the meaning of coarse aggregate?
Definition of coarse aggregate : the portion of the aggregate used in concrete that is larger than about ³/₁₆ inch.
What are lightweight aggregates?
Lightweight aggregate is a type of coarse aggregate that is used in the production of lightweight concrete products such as concrete block, structural concrete, and pavement. The expanded material has properties similar to natural aggregate, but is less dense and therefore yields a lighter concrete product.
What are the uses of fine aggregate?
Fine aggregate is used in making thin concrete slabs or other structural members and where a smooth surface is desired; coarse aggregate is used for more massive members.
What is the difference between fine and coarse?
As adjectives the difference between fine and coarse is that fine is of superior quality while coarse is composed of large parts or particles; of inferior quality or appearance; not fine in material or close in texture.
Why is sand called a fine aggregate?
Sand is called a fine aggregate when the term is used to describe a construction material because it’s compared to other coarser aggregates, such as gravel and pebbles. The term is relative. Sand is fine in texture compared to, say, #8 gravel. It’s the size of the aggregate 3/8″, 3/4″, 1/4″ etc.. A fine aggregate like sand is used in mortar.
How do fine aggregates afeect concrete mix design?
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 mix design.
Fine-grained concrete, also known as sand concrete, is defined as the concrete in which the coarse aggregate is replaced by sand or any filler material. The maximum size of fine aggregates used in fine-grained concrete is 10 mm.
What are the different types of aggregates?
Crushed Concrete. – Crushed concrete is mostly recycled material.