The main purposes of reinforcement in concrete roads are:
(i) to control the development and pattern of cracks in concrete pavement.
(ii) to reduce the spacing of joints. In general, joints and reinforcement in concrete structures are common design measures to cater for thermal and shrinkage movement. Hence, the inclusion of reinforcement allows
the formation of tiny cracks in concrete pavement and this allows wider spacing of joints.
In fact, the amount of reinforcement in concrete slab is not substantial and its contribution to the structural strength of roads is not significant.
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This question is taken from book named – A Self Learning Manual – Mastering Different Fields of Civil Engineering Works (VC-Q-A-Method) by Vincent T. H. CHU.
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