A bitumen is also known as asphalt; is the stickly, black and highly viscous liquid or semi-solid present in most crude petroleums and in some natural deposits; it is a subtance classed as a pitch. Until the 20th century, the term asphaltum was also used.
The term asphalt and bitumen are often used interchangeably to mean both natural and manufactured forms of the subtance.
The primary use of this subtance it is in road construction, where it is used as the glue or binder mixed with aggregate particles to create asphalt concrete. Its other main uses are for bituminous waterproofing products, including production of roofing felt and for sealing flat roof.
Uses of bitumen.
- A bitumen is used to refers to a mixture of mineral aggregate.
- It is also often used as generic term for road surfaces.
- It is also used for oil refinery product used to pave roads and manufacture roof shingles and varrious water proofing products.
- It is used also to seal the plank on ocean-going canoues.
-it can be used for flooring incase of water lock and can still be used for highly remarkable used in emulsion paint to increase the wheather resistances and permanence of paint to make the structure so furnished and beautiful.
Characteristic of a bitumen subtances.
* A bitumen is a subtance that can be separeted from other components; as the subtance is completely soluble in carbon disulfide, and composed primarily of a mixture of highly condensed hydrocarbons.
* Due to its highly viscous nature, asphalt cement must be heated so it can be mixed with other aggregates at the mixing plant.
Properties of Bitumen.
* The properties of bitumenious subtance being dependent upon the type, size and amount of aggregate used in the mixture all of which are adjusted to provide the required properties for the desirable application.
* It is sticky, black and highly viscous liquid or semi-solid.
Advantages of Bitumen.
1. It is a good subtance used in building flat roofing.
2. It can be separeted from other componet when heated and can also serve as a good waterproofing agent.
3. Bitumen subtance can be added to other aggregates such as stone, gravel, clay, gravel, etc in aggregate mixed; which serves as a source of nutrient to the structure to be stronger and free from craking due to wheather implications.
Disadvantages Of Bitumen.
1. Bitumen can easily crushed down if not supported with good anchor in term of roofing and upstairs flooring, lintel among other.
2. It takes time in its finishing.
References
http://www.lexiscoating.com/modified-bitumen/
http://www.eurobitumen.be/bitumen/types-bitumen
http://en.m.wikipedia.org/wiki/bitumen
Great checklist to help improve construction site safety guidelines!
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