Title: Identify the components for creating concrete.
Course: Agricultural Structural Systems (18403) > Section: Performing Concrete and Masonry Operations

Identification should include

- portland cement
- aggregate
  - sand
  - gravel
  - rock/crushed stone

- chemical additives
- water.

Process/Skill Questions:

- What are the ingredients of concrete?
- What is the difference between portland cement and concrete?
- What is portland cement? What is its purpose, and in what units is it sold?
- What determines the strength of the concrete materials?
- Why is gravel not included in a sand/topping mix?
- What is the relationship of the size of gravel to the thickness of the slab or wall?