Civil Engineer and Site Incharge Interview Questions and Answers

Compressive strength is a measure of the ability of concrete to resist loads that tend to compress it.

• Compressive strength is typically measured in pounds per square inch (psi) or megapascals (MPa).

• The strength of concrete increases with age, with most of the strength gain occurring within the first 28 days.

• Factors that affect compressive strength include the water-cement ratio, curing conditions, and the type and amount of aggregate used.

• The minimum compressive strength for ...read more

Water cement ratio is a crucial factor in determining the strength and durability of concrete.

• Water cement ratio affects the workability of concrete.

• Higher water cement ratio leads to lower strength and durability of concrete.

• Ideal water cement ratio is 0.45 to 0.50 for normal strength concrete.

• Water cement ratio should be adjusted based on the type of cement, aggregate, and environmental conditions.

• Excessive water in concrete can cause shrinkage, cracking, and reduced durabi...read more