Concrete 1

What does OSHA stand for? 

• Occupational Safety and Health Administration 
• Occupational Sales and Heavy Lifting Administration 
• Occupational Selling and Health Administration 
• Occupational Selling and Healthy Administration 

Block and mortar construction is a collapse risk because the mortar can fail.  This building material is known as 

• Masonry
• Balloon Frame
• Lightweight
• Truss

Which of the following is not a part of the concrete mixture?

• Portland Cement
• Aggregates
• Air
• Water

Portland cement is made by grinding this stone into a fine powder

• Granite
• Sandstone
• Lava Rock
• Limestone

What does the word "set" mean when referring to concrete?

• Dry
• Smooth
• Straight/Square
• Tamping

When water is added, the cement starts to become ...

• solid
• coarse
• fine
• soluble

Gravel is ...

• fine aggregate
• coarse aggregate
• plasticizer
• retarder

Sand is ...

• fine aggregate
• coarse aggregate
• reinforcement
• additive

1:2:4 mix consists of 

• 1 part of cement
• 2 parts of cement
• 3 parts of cement
• no cement

After concrete has set, it structural strenght is reached in ...

• 14 days
• 20 days
• 28 days
• 32 days