Lesson 5
Concrete

Concrete is one of the most important construction materials. It is comparatively economical, easy to make, offers continuity and solidity, and will bond with other materials. The keys to good-quality concrete are the raw materials required to make concrete and the mix design as specified in the project specifications. In this lesson, we’ll discuss the characteristics of concrete, the ingredients of concrete, concrete mix designs, and mixing concrete. We’ll conclude the lesson with a discussion of precast and tilt-up concrete.

5-1    Concrete Characteristics

5-2    Concrete Ingredients

5-3    Concrete Mix Design

5-4    Mixing Concrete

5-5    Precast and Tilt-Up Concrete