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GATE 2019 Transportation Engineering Day 5 Quiz
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Question 1
The variation of rigidity factor for a tyre pressure is stated as:
Question 2
The equivalent radius resisting section of 20 cm slab, if the ratio of radius of wheel load distribution to thickness of slab is 0.73 is
Question 3
For a 25cm thick cement concrete pavement, analysis of stresses gives the following values
The most critical stress value for this pavement is
The most critical stress value for this pavement is
Question 4
The width of the expansion joint is 20mm in a cement concrete pavement. The laying temperature is 20 °C and the maximum slab temperature in summer is 60 °C. The coefficient of thermal expansion of concrete is 10 x 10–6 mm/mm / °C and the joint filler compresses upto 50% of the thickness. The spacing between expansion joints should be
Question 5
The state of two dimensional stresses acting on a concrete lamina consists of a direct tensile stress, σx = 1.5 N/mm2, and shear stress t =1.20 N/mm2, which cause cracking of concrete. Then the tensile strength of the concrete in N/mm2 is
Question 6
Consider the following statements regarding pavements:
1) Rigid pavements are more suitable than flexible pavements for stage construction.
2) Rigid pavements are more affected by temperature variations than flexible pavements.
3) In a flexible pavement, any deformation in the top layers is transferred to underlaid layers; but, in rigid pavements, there is slab or beam action due to which any deformation is only in the top layer of the concrete slab.
Which of the above statements are correct?
1) Rigid pavements are more suitable than flexible pavements for stage construction.
2) Rigid pavements are more affected by temperature variations than flexible pavements.
3) In a flexible pavement, any deformation in the top layers is transferred to underlaid layers; but, in rigid pavements, there is slab or beam action due to which any deformation is only in the top layer of the concrete slab.
Which of the above statements are correct?
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Sep 29ESE & GATE CE