Explain requirements of Coarse and Fine Aggregates to be used in building construction

The Requirements of Coarse and Fine Aggregates to be used in building construction are as follows:

1. For normal concrete used for structural members such as beams and columns, the maximum size of coarse aggregate is about 25 mm. For mass concrete used for dams or deep foundations, the maximum size can be as large as 150 mm. But in any case not greater than one-fourth of the minimum thickness of the member.
2. The maximum percentage of Absorption allowed by the standard Specification is 5.0 Percent and applies to aggregate class AP, AS,A,B, and C only of Coarse Aggregate. The absorption quality requirement applies only to Coarse Aggregate.
   
3. Void Content ranges about 30% to 45%  (35% average )for coarse aggregate to about 40 to 50% (43% average) for fine aggregate.
4. Flat and elongated particles should be avoided or at least limited to about 15% by mass of total aggregate for both coarse and fine aggregate.
5. Fine aggregate should be 25 to 35%....

The Requirements of Coarse and Fine Aggregates to be used in building construction are as follows:

1. For normal concrete used for structural members such as beams and columns, the maximum size of coarse aggregate is about 25 mm. For mass concrete used for dams or deep foundations, the maximum size can be as large as 150 mm. But in any case not greater than one-fourth of the minimum thickness of the member.
2. The maximum percentage of Absorption allowed by the standard Specification is 5.0 Percent and applies to aggregate class AP, AS,A,B, and C only of Coarse Aggregate. The absorption quality requirement applies only to Coarse Aggregate.
   
3. Void Content ranges about 30% to 45%  (35% average )for coarse aggregate to about 40 to 50% (43% average) for fine aggregate.
4. Flat and elongated particles should be avoided or at least limited to about 15% by mass of total aggregate for both coarse and fine aggregate.
5. Fine aggregate should be 25 to 35% by volume of total aggregate.
6. Less Porous Aggregates are to be used in construction sites.
7. The bulk density of fine aggregate is generally 1.44 and that of Coarse aggregate is 1.60.
8. High Specific gravity aggregates indicates good quality materials.
9. The soundness (average loss of weight after 5 cycles) is about 10 when tested with `Na_2SO_4` and 15 when tested with `MgSO_4` for fine aggregates and 12 when tested with `Na_2SO_4` and 18 when tested with `MgSO_4` for Coarse aggregates.
10. It should have rough surface as the high bonding is possible due to more contact areas but should have sufficient workability.