Solved Example: 9068-01

Minimum thickness of the base of a flexible pavement is: (UPPCL JE CE Paper I 2014)

A. 15 cm

B. 20 cm

C. 10 cm

D. 5 cm

Correct Answer: C

Solved Example: 9067-01

Given the load, warping and frictional stresses on a cement concrete pavement slab as 220 N/mm$^2$, 300 N/mm$^2$ and 10 N/mm$^2$ respectively, the critical combination of stresses during summer season is: (CIL MT Civil 2020)

A. 300 N/mm$^2$

B. 530 N/mm$^2$

C. 520 N/mm$^2$

D. 510 N/mm$^2$

Correct Answer: D

Solved Example: 9067-02

The contact pressure P$_C$, tyre pressure P, and rigidity factor R are related by: (JKSSB JE CE 2015)

A. $\dfrac{{\rm{P}}}{{{{\rm{P}}_{\rm{C}}}}} = {\rm{R}}$

B. $\dfrac{{{{\rm{P}}_{\rm{C}}}}}{{\rm{P}}} = {\rm{R}}$

C. P $\times$ P$_C$ = R

D. ${\rm{R}} = {\rm{\;}}\sqrt {\left( {{\rm{P}} \times {{\rm{P}}_{\rm{C}}}} \right)}$

Correct Answer: B

Solved Example: 9067-03

Calculate spacing between expansion joints, if the expansion joint gap is 2.0 cm in a cement concrete pavement. The laying temperature is 10 C and the maximum slab temperature in summer is 50 C.($\alpha$ = 10 $\times$ 10$^{-6}$) (MP Sub Engg Civil July 2017- Shift II)

A. 30 m

B. 25 m

C. 100 m

D. 20 m

Correct Answer: B

Solved Example: 9066-01

The design life of flexible pavement is _____ years. (Guj Engg Service 2019)

A. 8

B. 10

C. 12

D. 15

Correct Answer: D

Solved Example: 9066-02

The interface treatment provided to plug in the voids of porous surfaces and to bond loose particles in bituminous pavements is called: (SSC JE CE Oct 2020 Morning)

A. Tack coat

B. Seal coat

C. Prime coat

D. Surface dressing

Correct Answer: C

Solved Example: 9066-03

hich of the following is used in a regular pavement maintenance activity? (MPPSC AE CE 2016 Paper II)

A. Tack coat

B. Prime coat

C. Fog seal

D. None of these are correct

Correct Answer: C

Solved Example: 9066-04

Which of the following it NOT a critical parameter to control cracking and rutting in a flexible pavement? (SSC JE CE Oct 2020 Morning)

A. Tensile strain near the surface close to the edge of the wheel

B. Vertical sub-base strain

C. Vertical subgrade strain

D. Tensile strain at the bottom of bituminous layer

Correct Answer: B