Vocabulary
Small or large substances used as an ingredient in concrete.
What is Aggregate?
These 5 ingredients make up concrete.
What is large aggregate (Gravel), small aggregate (Sand), Water, Portland Cement, and Air?
These people invented what we know as concrete construction today.
What is the Romans?
Wet Concrete is transported with this vehicle.
What is a cement truck?
Next to aggregate quality, the strength of concrete is largely dependent on this ratio.
What is cement to water ratio?
Ingredients added to concrete that is extra.
What is Admixture?
Name one ingredient of Portland Cement.
What is lime stone or iron or silica or alumina?
Embedding steel in concrete became a common practice in the 1850's as a way to increase resistance to these forces.
What are tinsel forces?
Concrete is considered workable with after a minimum of this many days.
What is 2 days?
This test may be performed to determine is the desired degree of work-ability has been achieved.
What is slump test?
Tool used to settle aggregate.
What is Edger?
When mixed with Aggregate and water this ingredient makes concrete.
What is Portland Cement?
The early mortar mixture discovered by the Romans cured not only when exposed to air, but also when submerged in this liquid.
What is Water?
Steel reinforcing bars or "rebar" is numbered for size. The number represents this.
What are eighths of an inch in diameter?
The strength of concrete is highly dependent upon this trait.
What is the quality of the aggregate?
Used to smooth the surface of concrete.
What is a Float?
What admixture makes concrete lighter, reduces thaw damage and adds insulating properties.
What is an air-entraining admixture?
The loss of the practice of concrete construction is associate with this historic event.
What is the fall of the Roman Empire?
Aggregate must be ______ in order to avoid contaminating and weakening the cement paste.
What is clean?
The quality of portland cement was established by ASTM C150 based on 8 types (from Type I to Type V). This type is characterized as normal.
What is type I?
Used to remove excess water on concrete.
What is Floor Squeegee?
Name the chemical process that concrete goes through.
What is Hydration?
Concrete construction was rediscovered with the invention of Portland cement patented by Joseph Aspdin in this year.
What is the year 1824?
Expanded shale aggregate is used to create lightweight structural concrete. The density of this concrete is ______ percentage less than that normal concrete.
What is 20%?
Concrete that fills forms without requiring vibration is called this.
What is self-consolidating concrete or SCC?