S J Developers Interview Questions and Answers

Mix designs for concrete involve determining the proportions of various ingredients to achieve desired properties.

• Mix designs are based on the required strength, workability, and durability of the concrete.

• Ingredients include cement, water, aggregates, and admixtures.

• The American Concrete Institute provides guidelines for mix designs.

• Examples of mix designs include 1:2:3 (cement:sand:gravel) and 1:1.5:3 (cement:sand:gr

Cement with low heat of hydration and high sulfate resistance is preferred for sea shore area.

• Cement with low C3A content is preferred as it reduces the risk of sulfate attack.

• Cement with low heat of hydration is preferred as it reduces the risk of thermal cracking.

• Blended cement with fly ash or slag can also be used as they have better resistance to sulfate attack.

• Examples of such cement are Portland Pozzolana Cement