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lesson 6 > Bitumen > Flashcards

Bitumen Flashcards

1
Q

Derived from petroleum, used in waterproofing and cons, oldest known eng mat

A

Bitumen

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2
Q

Originates from greek word

A

Asphaltos

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3
Q

Capacity to bond with other surfaces

A

Adhesion

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4
Q

Withstand damaging effects of water

A

Resistance to water

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5
Q

Level of resistance to deformation under pressure

A

Hardness

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6
Q

Consistency and ability to flow

A

Viscosity and flow

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7
Q

Temp when bitumen becomes soft

A

Softening point

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8
Q

Capacity to stretch without breaking

A

Ductility

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9
Q

Density

A

Specific grav

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10
Q

Resistance to wear and weathering

A

Durability

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11
Q

Adaptability

A

Versatility

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12
Q

Cost effectiveness

A

Economical

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13
Q

Resistance to deformation of loads

A

Strength

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14
Q

Chemical comp

A

Mixtures of hydrocarbons with high molecular weight

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15
Q

Types of bitumen

A

Natural bitumen - overtime
Coal tar pitches - hard black substances
Petroleum asphalts - solid/semi from petroleum
Paving grade bitumen: is generally categorized
according to its penetration and viscosity, which
establish its appropriateness for various pavement
kinds and climates.
Modified
bitumen:
it
offers
improved
performance and durability over conventional
bitumen solutions
Cutback bitumen: Bitumen that has been blended
with a solvent to liquefy
Bitumen emulsion: it is a mixture of water,
bitumen (asphalt), and an emulsifying agent.

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16
Q

Effects of bitumen to health

A

●
Possible carcinogen
●
Skin Contamination
●
Inflammation in upper and lower airways

17
Q

Purpose of bitumen

A

Road cons
Paving
Waterproofing
Insulation
Coatings and sealants
Industrial applications

18
Q

Bitumen production process

A

Straight run - direct usage
Airblowing- oxidation process
Solvent deasphalting- addition of propane/butane
Blending - mixing

19
Q

Types of test

A

Penetration
Viscosity
Softening point
Ductility
Spec grav
Solubility
Flash and fire point
Loss on heating
Spot test
Drop in penetration after heating

20
Q

a process wherein the
crude oil is evaporated and the hydrocarbon chains
of
different
lengths
condense
at different
temperatures.

A

Fractional distillation

lesson 6 (13 decks)

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