International Exhibition London 1871
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If in the mealy or finely divided state, it will not make brick, except for polishing, as Bath brick and Tripoli stone.
2d. If the silica is amorphous and fusible (such clays then possess more parts soluble in acids) the clay will run together in the fire, and may be eminently adapted for making terro- metallic ware (which see).
3d. If the silica is in the shape of crystalline sand, by wash- ing out some f of it, the remainder will be unctuous and fat, and, with or without an addition of sand, ...it can be worked into a good brick (more fuel is then required). Or else it may be used unwashed, but mixed with a fat clay. 4th. If the clay contains much mineral dust, washing will not separate it, and the bricks will not be durable, unless burnt to vitrifi- cation, as in terro -metallic and blue ware.
Brick clays contain not too much sand (5 to 60, some- times 80, usually about 25 per cent. ), the silica and alumina are about in the ratio of 3 to 1, and there is 1 to 2 per cent, of lime. When they contain 20 per cent, lime they become limey clays and are not used for ordinary brick, as they would fall to pieces by slaking of the lime.
What to read after International Exhibition London 1871?
You can find similar books in the "Read Also" column, or choose other free books by Arthur Beckwith to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
If in the mealy or finely divided state, it will not make brick, except for polishing, as Bath brick and Tripoli stone.
2d. If the silica is amorphous and fusible (such clays then possess more parts soluble in acids) the clay will run together in the fire, and may be eminently adapted for making terro- metallic ware (which see).
3d. If the silica is in the shape of crystalline sand, by wash- ing out some f of it, the remainder will be unctuous and fat, and, with or without an addition of sand, ...it can be worked into a good brick (more fuel is then required). Or else it may be used unwashed, but mixed with a fat clay. 4th. If the clay contains much mineral dust, washing will not separate it, and the bricks will not be durable, unless burnt to vitrifi- cation, as in terro -metallic and blue ware.
Brick clays contain not too much sand (5 to 60, some- times 80, usually about 25 per cent. ), the silica and alumina are about in the ratio of 3 to 1, and there is 1 to 2 per cent, of lime. When they contain 20 per cent, lime they become limey clays and are not used for ordinary brick, as they would fall to pieces by slaking of the lime.
What to read after International Exhibition London 1871?
You can find similar books in the "Read Also" column, or choose other free books by Arthur Beckwith to read onlineMoreLess
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