Concrete Mix Design
What are the four main ingredients in concrete?
Cement, water, sand, and gravel
What PPE should you always wear when mixing concrete?
Gloves, safety glasses, and long sleeves
What is the binding material used in masonry?
Mortar
Why do we cure concrete slowly?
To prevent cracking and improve strength
Name one use for concrete specifically in agriculture.
Feed pads, barn floors, troughs, fence posts
What happens when you add too much water to a mix?
It becomes weaker and more likely to crack
What tool is used to smooth concrete surfaces?
Trowel
What is mortar made of?
Cement, sand, and water
What finish gives good traction on outdoor pads?
Broom finish
What’s one advantage of using concrete for ag structures?
Durability or easy cleaning
What is the term for the ratio of water to cement?
Water to cement ratio
What tool measures and mixes dry ingredients accurately?
Measuring cup or scale
What is a “bond” in bricklaying?
The pattern or way bricks are arranged
What happens if concrete cures too fast?
It becomes weak and may crack
Why might fiber or rebar be added to a mix?
To increase tensile strength
What does curing allow concrete to do over time?
Gain strength and durability
Why should you wash off wet concrete immediately?
It can cause skin irritation or burns
Why are joints between bricks important?
They add strength and seal against moisture
What condition affects curing time the most?
Temperature and humidity
Why should a foundation be level and properly cured?
To support weight and prevent cracking
Which mix would be strongest: high water (A), medium (B), or low water ratio (C)?
Mix C (low water ratio)
What tool is used to compact or vibrate concrete to remove air pockets?
Concrete vibrator or tamping rod
What tool is used to strike a mortar joint?
Jointer
Name one finishing tool.
Float, trowel, or edger
How could a poor mix design affect farm equipment use?
Surfaces may crumble, crack, or wear unevenly