What is logic behind the use of Steel bar insted of gold
bar?
Answer
Coefficient of thermal expansion of concrete is 2 x 10⁶
where as coefficient of thermal expansion of steel is 2.1 x
10⁶ which is more-less same. For this reason in concreting
steel is used not gold.
what is the difference between compaction and consolidation?
Answer
Compaction is a mechanical process to remove voides & it
required less time Where As Consolidation is a natural
process to remove voides & it required large time.