Which of the following are the purposes for use of steel bar reinforcement in cement concrete pavements?
1. To increase the flexural strength of concrete.
2. To prevent the onset of cracks.
3. To allow wider spacing of joints.
Select the correct answer using the code given below:
1
1 and 2 only
2
2 and 3 only
3
1 and 3 only
4
1, 2 and 3