EGB 270 civil

What are aggregates typically composed of?

• Organic materials

• Inert, granular, inorganic materials

• Liquid substances

• Gaseous compounds

Which of the following is NOT a type of aggregate based on size?

• Coarse

• Fine

• Medium

• Silt/Clay

What is the temperature required to heat the mixture to get clinker in cement manufacturing?

• ~1200°C

• ~1350°C

• ~1450°C

• ~1550°C

Which of the following is NOT a component of clinker?

• Alite

• Belite

• Aluminate

• Gypsum

What forms rapidly during the hydration process of cement?

• Calcium Hydroxide crystals

• Ettringite

• Calcium Silicate Hydrate gel

• Ferrite

Which of the following is NOT a supplementary cementitious material?

• Volcanic Ash

• Rice Husk Ash

• Silica Fume

• Limestone

Which of the following is NOT a basic consideration in concrete mix design?

• Cost

• Strength

• Workability

What is the first step in the ACI Mix Design method?

• Determine max agg size

• Estimate water & air

• Select w/c ratio

Which factor does NOT affect the strength of hardened concrete?

• Moisture

• W/c ratio

• Aggregate size

Which test is NOT used for testing hardened concrete?

• Compression test

• Splitting tension test

• Flexural strength test