Assignment # 04: Civil Engineering Materials & Concrete Technology

Submission Date: December 30, 2013

Do as directed. Supplement your answers and arguments with photographs.

1. Aggregates made up major portion of concrete (60 75 % by volume). Discuss this fact with logical

arguments.

2. Briefly describe the classification of aggregates w.r.t.

a. Size

b. Shape

c. Surface texture

d. Weight

3. Define gradation and discuss its importance. Define fineness modulus of aggregates.

4. Calculate the fineness modulus for the following data:

5. Write ASTM standards tests for the following:

a. Gradation of aggregates

b. Specifications for concrete aggregates

c. Specific gravity of aggregates

d. Bulk density

e. Abrasion and impact resistance of aggregates

f. Soundness of aggregates

6. Define the following terminologies:

a. Bulk density

b. Absolute density

c. Relative density

d. Bulking of sand

e. Soundness of aggregates