Howe Engineering Projects Quality Control Expert Interview Questions and Answers

Quantity control ensures the correct amount of materials are used, while quality assurance ensures the materials meet the required standards.

• Quantity control involves measuring and verifying the amount of materials used in construction.

• Quality assurance involves ensuring that the materials used meet the required standards and specifications.

• Both quantity control and quality assurance are important for ensuring the safe...read more

Target mean strength and mix design are important factors in concrete quality control. MDD, OMC, and soil strength are crucial in soil quality control.

• Target mean strength refers to the desired strength of concrete at a specific age, usually 28 days.

• Mix design involves determining the proportions of various ingredients in concrete to achieve the desired strength and other properties.

• MDD (Maximum Dry Density) and OMC (O...read more

Bituminous Mix Design is the process of determining the proportion of bitumen, filler, and aggregates for asphalt concrete.

• The mix design is based on the traffic volume and the climatic conditions of the area.

• The IS code for bituminous mix design is IS 10262.

• The mix design involves determining the optimum bitumen content, aggregate gradation, and filler content.

• The Marshall method and the Superpave method are commonly ...read more

Strength of concrete after 28 days is a measure of its compressive strength.

• Concrete gains strength over time due to the chemical reaction between cement and water.

• After 28 days, most concrete reaches 99% of its strength potential.

• The strength of concrete is measured in pounds per square inch (psi).

• The minimum strength of concrete for most applications is 2500 psi.

• Factors that affect concrete strength include water-cem...read more