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WorksheetsTransportation lab
Total questions: 24
Worksheet time: 14mins
_______ is used for Ductility test of bitumen.
ball and ring
Specific gravity bottle
Briquette Mould
test cylinder
Name the test conducted on bitumen using the Pensky-Martens closed cup apparatus?
Specific gravity test
Softening point test
Viscosity test
Flash and Fire point test
--------- test is the temperature at which bitumen attains a particular degree of consistency. It is conducted by ring and ball apparatus
(a)
if the roughness on the merlin scale is, D= 105mm then calculate the road roughness in terms of International Rounghness Index
(a)
While conducting the softening point test on bitumen, the result is expressed as:
Viscosity
Time
Temperature
Flow
Bitumen with Higher softening point is preferred in____ places
colder
warmer
normal temperature
all of the above
What will happen to softening point if:
Aluminium balls are used in place of steel balls?
decreases
increases
No change
none of the above
What will happen to softening point if:
The distance between rings and the bottom plates is increased?
decreases
increases
No change
none of the above
What is the test temperature and standard rate of pull?
Temperature - 27°C
Standard rate of pull- 50 mm per minute.
Temperature - 25°C
Standard rate of pull- 50 mm per minute.
Temperature - 27°C
Standard rate of pull- 50 cm per minute.
Temperature - 25°C
Standard rate of pull- 50 cm per minute.
The _______is the lowest temperature at which the application of test flame causes
the material to ignite and burn at least; for 5 seconds under specific conditions of
test.
Flash point
Fire point
Softening point
specific gravity
A good binder should posses higher flash point?
True
False
Does not matter
Binders having very ____ viscosity can be advantageously used in exceptionally cold weather conditions.
Medium
High
Low
From where is the paving grade A35 obtained?
Andhra Pradesh
Asia
Assam
America
which of the below IS code gives guidelines for the flash and fire point test?
IS 1209
IS 1202
IS 1208
IS 1201
Marshall stability of a mix evaluates
two main properties:
strength and density
strength and flexibility
flexibility and ductility
density and stability
(a) property is
measured by means of the flow value, in Marshall stability Test.
True options is Bitumen Grades - Softening Point, o C
a) A25 &A 35 - 55 to 70
b) S 35 - 55 to 70
c) A 90 & S 90 -50 to 65
d) A 90 & S 90 - 35 to 50
a) and c)
b) and c)
b) and d)
a) and d)
a) Pointer
b) pivot
a) probe
b) pivot
a) probe
b) Pointer
a) pivot
b) probe
Ductility of bitumen is measured in terms of ______
a) Time
b) Distance
c) Temperature
d) Colour
The ductility value of sample tested is found to be 81 mm. What is the grade of the sample?
A25
S90
A200
All the options
The following list is FOUR (4) difference between tar and bitumen EXCEPT
Tar not the distillation of petroleum.
Bitumen are easily change shape on temperature changes
Tar easily damaged at high temperatures and brittle at low temperatures.
Tar are insoluble in solvents such as gasoline, kerosene and others
(a) of a fluid is the property by virtue of which it offers resistance to flow.
High or low viscosity during mixing or compaction has been observed to result in lower stability values.High or low viscosity during mixing or compaction has been observed to result in ____ stability values.
higher
lower
optimum
same
______the viscosity is, the slower will be the movement of the liquid.
Higher
lower
none of the option
higher and lower
