Question

while constructing cement road useing concrete slab a small gap is left between the two slabs / why​

Answer 1

Answer:

The concrete slabs undergo thermal expansion during summer. The gap allows space for this expansion. If these gaps were not left, the concrete slabs would crack during summer due to thermal expansion.

Explanation:

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Answer 2

Answer:

If these gaps were not left, the concrete slabs would crack during summer due to thermal expansion.