Building Material Price
- Company Name:Box Bricks
- Membership:Free Member
- Member Since:2013. 12.24
- Country/Region:India
- City:Tamilnadu
- Contact:Mohamad
- Related Keywords:Building Material Price
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Box Bricks
[India]
Soft mud moulding –Clay is ‘thrown’ into a mould which has been pre-lined with a releasing agent such as sand, oil or water. The excess clay is removed from the top and the brick released from the mould. Prior to
mechanisation, this was all undertaken by hand – but the labour-intensive nature of the process and its consequential expense means that in modern time ‘hand made’ bricks tend to be reserved for niche
applications and ‘specials’.
Drying
To prevent moisture from causing bricks to explode in the kilns, they are first dried before being fired. Drying takes place in conditions of between 80-120ºC, lasts for between 18 – 40 hours and can cause shrinkage of up
to 10% on each dimension.
gas fired brick kiln
Firing
The dried clay is fired to fuse clay particles and impurities (‘vitrification’) to produce the hard brick in its completed form and livery. Bricks can be fired in either small batches in ‘Intermittant’ kilns or the more energy –
efficient and larger capacity ‘Continuous kilns’. On completion of firing the bricks are selected and packaged – a process that can be either manual or automated.
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