Sand is an example of a granular material. Granules on sand, generally measuring between 0.0625 to 2 millimeters. Sand-forming material is silicon dioxide, but in some tropical and subtropical beaches it is generally formed from limestone. Only a few plants can grow on sand, because sand has large cavities. Sand has color according to the origin of its formation. And as we know sand is also very important for building materials when mixed with Cement adhesive.
Well, for this time we will discuss about this one material. as we know this sand is a building material that is quite influential for building materials which can be said to be widely used from the lowest structure to the uppermost structure of a building. The following are 5 types of sand according to their level of quality:
- Red Sand
Red sand or like called Sand Jebrod if in the area of Sukabumi or Cianjur because the sand is taken from the area of Jebrod Cianjur. Jebrod sand is usually used for Cast material because it has more rough characteristics and somewhat larger rock.
- Sand of Elod
The characteristic feature of this elod sand is that if it is clenched in the head it will clot and will not return. This sand is still a mixture of soil and the color is black. This type of sand is not good for buildings. This sand is usually only for concrete sand mixture so that it can be used for wall plastering, or for brick making mixtures.
- Sand Plug
Namely sand that is not much different from elod type sand finer than concrete sand. Characteristics if clenched will clot and will not return to the original. Tide sand is usually used to mix concrete sand so it is not too rough so that it can be used for plastering walls.
- Concrete Sand
Namely the sand is black and the grain is quite smooth, but if it is clenched with the hand it does not clot and it will return. This sand is very good for casting, plastering walls, foundations, brick and stone installation.
- River Sand
is sand that is obtained from the river which is the result of gigisation of hard and sharp rocks, this type of sand is quite good granules (between 0.063 mm – 5 mm) so that it is a good mix for pair work. Usually this sand is only for caranaran material.