Learning Objective: Identify
the materials used to produce
bituminous pavement. Identify
characteristics and uses of
bitumens.
12-18.
Coarse aggregate materials used in
bituminous pavement are stone or
gravel retained on what sieve?
1. No. 4
2. No. 8
3.
No. 10
4.
No. 40
12-19.
Fine rock dust that passes the
No. 200 sieve which is used in a
paving mix is known by what name?
1.
Silica
2.
Mineral filler
3.
Limestone dust
4.
Mineral dust
12-20.
Normally, bituminous mixtures
contain what percentage of
aggregate by weight?
1.
80%
2.
Between 85% and 90%
3.
90% or more
4.
Not less than 95%
12-21.
Tars are obtained from the
distillation of what material?
1.
Bituminous cement
2.
Crude petroleum
3.
Bituminous coal
4.
Creosote
12-22.
Which of the following materials
is a residue in the distillation
of crude oil?
1.
Gasoline
2.
Fuel oils
3.
Kerosene
4.
Lubricating oi1s
12-23.
Which of the following asphalt
petroleum numbers correspond to
a hard relative consistency?
1.
9
2.
7
3.
3
4.
00
12-24.
Asphalt dissolved in petroleum
products is known as
1.
cutterstock
2.
emulsified asphalt
3.
road tar
4.
cutback asphalt
12-25.
What solvent is used to produce
medium-curing cutback?
1.
Gasoline
2.
Kerosene
3.
Naphtha
4.
Fuel oil
12-26.
What is the upper viscosity limit
of an asphalt bitumen classified
as RC-250?
1.
125
2.
250
3.
500
4.
750
12-27.
RTCB is manufactured only in the
viscosity grades of 5 and 6. RTCB
is the designation for
1.
coal-tar cutback that contains
no road tar distillates
2.
hot-tar cutback that contains
road tar distillates
3.
road-tar cutback that contains
no coal tar distillates
4.
road-tar cutback that contains
coal tar distillate
12-28.
Which of the following factors
determine the selection of
bituminous material to be used
in a pavement?
1.
Type of pavement
2.
Climatic conditions
3.
Availability of equipment
4.
Each of the above
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