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In a day, the top surface of rigid pavement ______ than the bottom of slab.

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in Geotechnical Engineering II by (93.7k points)
In a day, the top surface of rigid pavement ______ than the bottom of slab.

(a) expands

(b) contracts

(c) remains stable

(d) shows no changes

I got this question during an interview for a job.

Enquiry is from Design of Rigid Pavements in section Design of Flexible & Rigid Pavement of Geotechnical Engineering II

1 Answer

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by (243k points)
The correct choice is (a) expands

Easiest explanation: In a day, as the temperature in the top of rigid pavement is hot or at least more than that of the bottom, the the top surface of rigid pavement expands more than the bottom of slab.

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