BRICK 5 Flashcards

1
Q

What are Bullnose bricks?

A

Bricks moulded with a rounded angle, one edge curved, used for rounded quoin.

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2
Q

What are Channel bricks

A

Bricks moulded to the shape of a gutter, used as drains.

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3
Q

What are Cownose bricks?

A

Bricks with two curved edges, moulded with a double bullnose,

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4
Q

What are Curved Sector bricks?

A

Bricks in the form of a curved sector, used in the construction of pillars, chimneys, etc

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5
Q

What are Hollow bricks?

A

Also known as cellular or cavity bricks, they weigh about 1/3rd of an ordinary brick and are used to reduce heat, sound, and damp transmission.

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6
Q

What is the maximum hollow area of Hollow bricks?

A

The maximum hollow area should not be greater than 50% of the total plane area.

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7
Q

How much faster are Hollow bricks laid compared to ordinary bricks?

A

Hollow bricks are laid almost 4 times faster than ordinary bricks.

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8
Q

What are the dimensions of Hollow bricks?

A

Size - 40 x 20 x 20 cm, Wall thickness - 20-25 mm.

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9
Q

What are Paving bricks?

A

Prepared from clay with a high percentage of iron, they offer better resistance to the abrasive action of traffic.

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10
Q

What is the IS code for Paving bricks?

A

: IS 3583.

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11
Q

What are Coping bricks?

A

Bricks made to suit the thickness of walls on which coping is to be provided to prevent the entry of water.

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12
Q

What are the different forms of Coping bricks?

A

Chamfer, half round, or saddle back.

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13
Q

What are Perforated bricks?

A

Bricks containing cylindrical holes, light in weight, and requiring less clay for preparation.

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14
Q

What is the IS code for Perforated bricks?

A

IS 2222.

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15
Q

What is the water absorption of Perforated bricks?

A

Less than 15%.

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16
Q

What is the compressive strength of Perforated bricks?

A

Greater than 7 N/mm².

17
Q

What are Squint bricks?

A

A brick cut or moulded to an oblique angle, forming an angle other than a right angle in plan.

18
Q

What is the key property of fire clay?

A

High temperature resisting capacity.

19
Q

: What are the main constituents of good fire clay?

A

Alumina and silica.

20
Q

What is the temperature range that High Duty Fire Clays can resist?

A

1482°C to 1648°C.

21
Q

What is the temperature range that Medium Duty Fire Clays can resist?

A

1315°C to 1482°C.

22
Q

What is the temperature range that Low Duty Fire Clays can resist?

A

Up to 870°C.

23
Q

What are Fire Bricks made from?

A

Made from fire clay.

24
Q

What is the color of Fire Bricks?

A

White or yellowish white.

25
Q

What is the weight of Fire Bricks?

A

About 30 to 35 N.

26
Q

What temperature can Fire Bricks resist?

A

Up to 1500°C

27
Q

What are Fire Bricks used for?

A

Used for lining of kilns, ovens, chimneys, etc.

28
Q

What is the compressive strength of Fire Bricks?

A

200 to 220 kg/cm².

29
Q

What is the water absorption of Fire Bricks?

A

Varies from 5 to 10%.

30
Q

What are the three types of Fire Bricks?

A

Acidic Brick, Basic Brick, and Neutral Brick.

31
Q

What is used for acidic lining in Fire Bricks?

A

ACIDIC BRICK
Ordinary fire bricks and silica bricks.

32
Q

What is used for basic lining in Fire Bricks?

A

BASIC BRICK
Magnesia bricks (70% MgO + 30% silica and alumina) and Dolomite bricks (carbonate of Ca and Mg).

33
Q

What is used for neutral lining in Fire Bricks?

A

NEUTRAL BRICK
Chromite bricks and high alumina bricks.

34
Q

What is the composition of Silica bricks?

A

Silica 95 to 97%, Lime 1 to 2%.

35
Q

What temperature can Silica bricks withstand?

A

About 2000°C.

36
Q

What is the compressive strength of Silica bricks?

A

15 N/mm².

37
Q
A