Coal Tar and Bitumen Quiz

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What type of mortar is prepared by mixing lime or cement as binder, sand, jute fibers, coirs, or asbestos fibers as aggregate?

Gauge mortar

Lightweight mortar (correct)

Heavy mortar

Surkhi mortar

Which type of mortar has the highest strength, reaching up to 2500 psi?

Type M mortar (correct)

Type N mortar

Type S mortar

Type O mortar

What type of mortar is used for fire-resistant purposes and is prepared using aluminous cement and fine powder of fire bricks?

Fire resistant mortar (correct)

Type M mortar

Mud mortar

Gauge mortar

Which type of mortar has medium strength with high bonding ability and reaches around 1800 psi?

Type S mortar Signup and view all the answers

What type of base on bulk density is considered to classify a mortar as 'lightweight'?

$15kn/m^3$ Signup and view all the answers

What is the main function of dam grouting?

To protect the foundation of dams from seepage Signup and view all the answers

Which component of bitumen is known for being a strong preservative?

Resinous component Signup and view all the answers

What is the function of dyke lining in hydraulic structures?

Regulates water levels Signup and view all the answers

Which property of bitumen allows it to adhere to a solid surface in its fluid state?

Adhesion Signup and view all the answers

What is the purpose of embankment protection?

Protects the structure from water damage Signup and view all the answers

Which chemical composition of bitumen is identified as non-polar aromatics?

Naphtene aromatics Signup and view all the answers

What is the primary purpose of preservatives in wood?

Increase resistance to decay Signup and view all the answers

Which compound is commonly used as a preservative due to its clean and odorless nature?

Zinc chloride Signup and view all the answers

How are preservatives applied in the pressure process for preserving timber?

By forcing the preservative into the timber Signup and view all the answers

What is the main advantage of compartment kilns over progressive kilns?

Allows difficult-to-dry materials to be dried effectively Signup and view all the answers

What is a significant difference between coal-tar and water-soluble salts in wood preservation?

Coal-tar contains oily substances, which water-soluble salts lack. Signup and view all the answers

What is the principal cause of decay in wood and timber?

Fungus Signup and view all the answers

What is the maximum height for the construction lift when building a masonry wall?

600mm Signup and view all the answers

What must be used at every 600mm height and 1.2m length in a masonry wall construction?

Through-stones Signup and view all the answers

In masonry construction, what is important to ensure regarding the fixing method adopted?

It is based on the stone type Signup and view all the answers

How are paints applied as SOLID in industrial and automotive applications?

Applied as very fine powder and baked at high temp Signup and view all the answers

In the chemistry of paints, how are paint particles oriented during chemical reactions?

Their orientation depends on the substrate chemistry Signup and view all the answers

What distinguishes the application of paints as LIQUID in terms of timing?

There is an open time for blending with additional painted regions Signup and view all the answers

What is the purpose of varnishes?

To act as a protective layer on interior and exterior surfaces Signup and view all the answers

What distinguishes long oil varnish from short oil varnish?

Oil content in the varnish Signup and view all the answers

Which type of varnish is known to be less expensive than oleo resinous varnish?

Natural resin varnish Signup and view all the answers

How are distempers different from regular paints?

They are mixed with water only before use Signup and view all the answers

Which characteristic is NOT associated with good paints?

High gloss finish Signup and view all the answers

What is the main component of plaster used in construction?

Lime Signup and view all the answers