The rate of creep rapidly decreases with time. The time taken by a concrete structure to attained creep is 5 years.

Water cement ratio should not exceed .5 in concreting because it will reduces workability of concrete.

Formwork can never cause shrinkage in concrete even it helps to reduce shrinkage in concrete.

ACR affected concrete does not exhibit telltale features too distinctly. AAR results in deleterious expansive cracking of concrete occurring at later ages after construction.

Low w/c ratio will directly affect quality of concrete. A lower water cement ratio leads to high strength in concrete refore lesser cracks.

Compressive strength of hardened concrete is done by cube test. For cube test two types of specimens eir cubes of 15cm X 15cm X 15cm or 10cm X 10cm x 10cm depending upon size of aggregate are used.

Reduction in volume due to shrinkage causes volumetric strain in freshly hardened concrete.

It is not possible to have 0 % cracks in any building after construction. We can prevent it but we can?t stop it.

Evaluation of cracks can be determined after cracking i.e., due to structural, rmal, chemical, physical activities.

Acid attack will show disintegration of concrete evidenced by loss of cement paste.