Which size coarse aggregate is most suitable for use in a concrete?

Which size coarse aggregate is most suitable for use in a concrete?

In the majority of concrete works, aggregate sizes of 20 mm or smaller are used. To ensure good coarse aggregate compaction and higher concrete density, it is recommended to mix 20 mm and 10 mm coarse aggregates in the ratio of 70:30 or 60:40.

Where is 20mm aggregate used?

Typically most common size of aggregate used in RCC structure like roof slab, column, beam and bridge deck is 20mm. This is best, perfect, ideal and standard size of aggregate used in RCC for construction of roof slab, column and beam.

What is the maximum size of aggregate in RCC?

20mm
Explanation: The maximum size of aggregates used in RCC is limited to 20mm, for ease of compaction and workability, however 10 mm, 15 mm are also used, in some exceptions 25 mm also is used.

What is the maximum size of aggregate that can be used in RCC?

Explanation: The maximum size of aggregates used in RCC is limited to 20mm, for ease of compaction and workability, however 10 mm, 15 mm are also used, in some exceptions 25 mm also is used.

What is a good aggregate?

Good-quality aggregate must be clean, hard, strong, have durable particles, and be free of absorbed harmful chemicals, coatings of clay, or other contaminates that can affect hydration of cement or reduce the paste-aggregate bond. Aggregates to avoid include: Those that are friable or susceptible to being split.

What is the size of aggregate?

The usual range employed is between 9.5mm and 37.5mm in diameter. – 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.

What is maximum nominal size of aggregate?

Aggregate Size Nominal Maximum Size: The smallest sieve opening through which the entire amount of aggregate is permitted to pass. coarse aggregate MUST pass the 1.5” sieve but 95 – 100\% MAY pass the 1” sieve, therefore # 57 aggregate is considered to have a Maximum size of 1.5” and an Nominal Maximum size of 1”.