C
hapter
6
Concrete
Objectives
After studying this chapter, you will be able to:
•
Identify at least three different types of Portland cement.
•
Describe the aggregate used to make concrete.
•
Discuss the purpose of admixtures.
•
Describe the reinforcing steel used in concrete.
•
Identify four factors that control the quality of concrete.
•
Describe the processes involved in working with concrete.
•
Calculate the volume of concrete needed for a simple project.
•
Discuss the importance of proper curing.
•
Describe two tests that are used when working with concrete.
Technical Terms
admixtures
aggregate
air-entrained concrete
compression
compression tests
concrete
consolidation
cubic yard
curing
darbying
edging
floating
105
form ties
hydration
jointing
Portland cement
puddling sticks
reinforcing bars (rebar)
screeding
slump cone
slump tests
subgrade
tension
troweling