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Q: As per IS 1203-1978 in the penetration test of bitumen, a standard tapered needle is used to calculate.
  • A. softening point
  • B. consistency of the bitumen binder
  • C. the required quantity of colour
  • D. binder capacity
Correct Answer: Option B - Penetration test of bitumen– As per IS 1203-1978 is used to determine the penetration of bitumen. • The penetration of a bituminous material is the distance in 10th of a mm that a standard needle would penetrate vertically, into a sample of the material under standard conditions of temperature, load and time. • In this test a standard tapered needle is used to calculate the consistency of the bitumen binder. • This test is conducted out a specified temperature of 25ºC • No. of sample = 3, needle dia = 1 mm, length = 50 mm, weight = 100 gm
B. Penetration test of bitumen– As per IS 1203-1978 is used to determine the penetration of bitumen. • The penetration of a bituminous material is the distance in 10th of a mm that a standard needle would penetrate vertically, into a sample of the material under standard conditions of temperature, load and time. • In this test a standard tapered needle is used to calculate the consistency of the bitumen binder. • This test is conducted out a specified temperature of 25ºC • No. of sample = 3, needle dia = 1 mm, length = 50 mm, weight = 100 gm

Explanations:

Penetration test of bitumen– As per IS 1203-1978 is used to determine the penetration of bitumen. • The penetration of a bituminous material is the distance in 10th of a mm that a standard needle would penetrate vertically, into a sample of the material under standard conditions of temperature, load and time. • In this test a standard tapered needle is used to calculate the consistency of the bitumen binder. • This test is conducted out a specified temperature of 25ºC • No. of sample = 3, needle dia = 1 mm, length = 50 mm, weight = 100 gm