Preparation of clay
- Unsoiling
- Digging.
- Weathering.
- Blending.
- Tempering.
Unsoiling :-
Top layer of earth thrown away(about 200mm in depth).
Why unsoiling is remove?
- To remove organic matter.
- To remove stone,brick particles.
Digging :-
The clay is dug out and spread out the ground.
Weathering :-
The clay is exposed to weather for few weeks.
Blending :-
Homogeneous mixing of clay with or without additional ingredients in knows as blending.
Tempering :-
The clay is brought to a proper duty of hardness by kneading and made suitable for moulding.
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