Quiz: Civil Engineering
Topic: Transportation Engineering
Each question carries 1 mark
Negative marking: 1/4 mark
Time: 10 Minutes
Q1. The penetration test on bitumen is used for determining its
(d) None of these
Q2. The ductility value of bitumen is ………….
(a) Equal to that of tar
(b) More than that of tar
(c) Less than that of tar
(d) None of these
Q3. As per I.R.C. for bitumen bound macadam maximum aggregate impact value in % will be:
Q4. As per BIS bitumen grade 85/40, 65/25 etc. the first and second number represents:
(a) softening and penetration point
(b) Flash point and softening point
(c) Penetration and softening point
(d) Flash and penetration point
Q5. The Los angels abrasion value (%) of aggregates to be used for the final layer of bituminous concrete is limited to:
Q6. Charpy test is
(a) a bending test
(b) an impact test
(c) a fatigue test
(d) a hardness test
Q7. California bearing ratio (CBR)
(a) is a measure of soil strength
(b) is a procedure for designing flexible pavements
(c) is a method of soil identification
(d) is a measure to indicate the relative strength of paving materials
Q8. In a CBR test, if the CBR value at 5 mm is greater than that at 2.5 mm
(a) the higher value should be chosen
(b) the test should be repeated
(c) Average value of the two should be used
(d) none of these
Q9. The tie bars in a concrete pavement are provided in: –
(a) Contraction joints
(b) Expansion joints
(c) Longitudinal joints
(d) Construction joints
Q10. The height of the dowel above the road level should not be more than:
(a) 10 cm
(b) 20 cm
(c) 30 cm
(d) 40 cm
Sol. The penetration test on bitumen is used for determining the Grade of bitumen.
Sol. The ductility value of bitumen is less than that of tar.
Sol. As per I.R.C for bitumen bound macadam maximum aggregate impact value will be 30%.
Sol. As per BIS bitumen grade 85/40, 65/25 etc. the first and second number represents softening point and penetration or consistency point.
Sol. The los angle abrasion value (%) of aggregate to be used for the final layer of bituminous concrete is limited to 30%.
Sol. Charpy test is an impact test. It is used to evaluate the relative toughness or impact toughness of materials.
Sol. California Bearing ratio (CBR) is a measure of arbitrary soil strength. IRC consider CBR method for designing of flexible pavement.
Sol. In a CBR test, If the CBR value at 5mm is greater than at 2.5mm then test should be repeated.
Sol. The Tie bars in a concrete pavement are provided in Longitudinal joints. Tie bars are about 12.5mm in diameter and between 0.6 to 1.0 m long.
Sol. Dowel bare are used in expansion joints. The height of the dowel above the road level should not be more than 30cm.