Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Construction Materials > Bituminous Materials > Flashcards

Bituminous Materials Flashcards

1
Q

Binder

A

A material used to hold solid particles together.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Bitumen

A

A heavy fraction from oil distillation also occurs as part of natural asphalt. Black dark brown non crystalline solid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Tar

A

Is primarily manufactured viscous liquid obtained from destructive distillation of bituminous coal or wood

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Asphalt

A

A mixture of bitumen and mineral filler

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Mastic

A

An adhering asphalt which is placed with trowelling

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Macadam

A

A road construction material with binder and coarse aggregate. Tarmacadam was the first road surfacing material

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Bitumen used in paving

A

Native asphalt
Rock asphalt
Petroleum asphalt

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Native asphalt

A

A mixture occurring in nature in which bitumen is associated with inert mineral matter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Rock asphalt

A

A naturally occurring rock formation, usually calcareous, a sandstone in the pores and veins of which is found impregnated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Petroleum asphalt

A

Obtained from crude oil by a process called Fractional distillation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Two sources of asphalt

A

Island of Trinidad
Bermudez, Venezuela

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Flash point

A

Temp at which bitumen catches fire momentarily

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Fire point

A

Temp at which bitumen completely burns

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Safety when using bitumen

A

1.Water spreads a bitumen fire
2. Used at high enough temperatures to cause severe burns
3. Materials and vapors are potentially carcinogenic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Bituminous materials

A
  1. Asphalt cement
  2. Tar
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Asphalt cement

A

Is a dark brown to black cementitious materials either naturally occurred or produced by petroleum distillation

17
Q

Why tar is hardly used in paving

A

High temperature susceptibility
Significant health hazards

18
Q

Two categories of asphalt

A

Natural asphalt
Petroleum asphalt

19
Q

Natural asphalt

A

Laid down in geologic strata and occurs relatively as soft asphalt material

20
Q

Petroleum asphalt

A

These are colloidally dispersed hydrocarbons in crude petroleum and are obtained by refining petroleum crudes

21
Q

Types of asphalt

A
  1. Asphalt cement
  2. Emulsified asphalt
  3. Cutback asphalt
22
Q

What asphalt is commonly used in

A

Flexible pavement construction

23
Q

What is used to grade asphalt cement

A

Penetration test
Viscosity test

24
Q

Penetration test

A

Involves measurements of penetration of standard penetration needle into a sample of asphalt cement under standard temp. Time and load

25
Q

Viscosity test

A

The viscosity grading system is based from original asphalt cement

26
Q

Emulsified asphalt

A

Is a mixture of asphalt cement, water and emulsified agent. Used for prime coat and track coat

27
Q

Cutback asphalt

A

Are liquid asphalts which are manufactured by adding petroleum solvents to asphalt cements

28
Q

Three types of cutbacks

A

Rapid curing
Medium curing
Slow curing

29
Q

Rapid curing

A

Produced by adding light diligent of high volatility to asphalt cement

30
Q

Medium curing

A

Produce by adding a medium diligent of intermediate volatility to asphalt cement

31
Q

Slow curing

A

Produce by adding oils of low volatility to asphalt cement

32
Q

Softening point test

A

A steel ball of specified dimensions and weight is placed in the center of the sample and the bath is heated at a controlled rate of 5 C per minute

33
Q

Asphalt mix types

A
  1. Asphaltic concrete
  2. Stone mastic asphalt
  3. Porous asphalt
34
Q

Softening point

A

It is temperature at which bitumen changes it’s state from semi solid to semi liquid

35
Q

Presence of Ductility

A

The formations of the film and coating

36
Q

Viscosity

A

It is resistance to flow or inverse of fluidity

37
Q

Bitumen durability

A

Refers to the long term resistance to oxidative hardening of the mechanical in the field

38
Q

Hydrocarbons that make up bitumen

A

Asphaltenes
Resins
Oils

39
Q

Classification of bitumen

A
  1. Native bitumen
  2. Cutback bitumen
  3. Bitumen emulsions
  4. Modified binder

Construction Materials (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions