Test: Factors Affecting Design & Performance of CC Pavements - Civil Engineering (CE) MCQ

The slabs are provided with a gap of usually 20 mm for expansion in summer season.

The stress in pavement changes daily according to the temperature on surface, actually it changes every minute but we can’t calculate it for every minute so assumption is taken it changes daily.

The spacing between the two joints depends on the type of joint, it may be 4.5 m for longitudinal and 3.5 m for transverse joint.

The most influence factors are wheel load and temperature stress in rigid pavement.

 The life span of most of the pavement is dependent on the location of loading of the wheel.

The term ‘a’ denotes the radius of equivalent area of contact, which indicates the value of the radius of wheel in which that is in contact.

The stresses are found in three parts of pavement they are interior, edge and corner.

For a rigid pavement the fatigue ratio of the pavement is 0.45 to 0.9, in any case the value should not exceed 0.9.

The ratio of flexibility strength due to a load and it’s original flexural strength is called stress ratio.

 If the stress ratio is kept below 0.44, then there is no chance of fatigue, so the pavement is designed at a stress ratio of less than 44%.