Building Materials - Civil Engineering Questions and Answers

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Lime mortar is generally made with

Quick lime

Fat lime

Hydraulic lime

Plain lime

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Advantage of a clamp compared to a kiln for burning bricks is that

It takes less time for burning

It gives more output of first class bricks

It has less initial cost

It is suitable when bricks are required in large numbers

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The type of bond provided in brick masonry for carrying heavy loads is

Single Flemish bond

Double Flemish bond

English bond

Zigzag bond

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Expansion Joints in masonry walls are provided in wall lengths usater than

10 m

20 m

30 m

40 m

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Which of the following bricks are used for lining of furnaces?

Over-burnt bricks

Under-burnt bricks

Refractory bricks

First class bricks

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The curved swellings from the growth of layers or wounds left after branches are cut off in an irregular manner are known as

Knots

Rindgalls

Burls

None of these

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The age of a tree can be known by examining

Cambium layer

Annular rings

Medullary rays

Heart wood

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Ultimate strength to cement is provided by

Tri-calcium silicate

Di-calcium silicate

Tri-calcium aluminate

Tetra calcium alumino ferrite

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The main constituent of fly-ash, is

Aluminium oxide

Silica

Ferrous oxide

All of these