Contractor's Guide to Quality Concrete
Quiz_________________?
How much does concrete weigh per cubic foot? -
Answer✅
150 lbs
Quiz_________________?
What is the range of moderate slumps for most concrete? -
Answer✅
3 to 4 inches
Quiz_________________?
What is the minimum temperature concrete should be poured on thin slabs? -
Answer✅
60 degrees
Quiz_________________?
Which types of concrete slabs are suitable for air-entrained concrete? -
Answer✅
Driveway, Sidewalk, and Exterior slabs
1
, Quiz_________________?
What temperature should concrete cylinders be maintained at during the first 48 hours prior
to testing concrete? -
Answer✅
60-80 degrees
Quiz_________________?
What is the most important factor in preventing surface scaling in concrete flatwork? -
Answer✅
Air Entrainment
Quiz_________________?
Air-entrained concrete is most vulnerable to what type of problem? -
Answer✅
Blistering
Quiz_________________?
Which admixture BEST allows for properly finishing a fresh load of concrete that has a high
temperature? -
Answer✅
Retarder
Quiz_________________?
What percent of the 28 day strength of concrete should be obtained in the first 7 days? -
Answer✅
65 to 70 percent
Quiz_________________?
For acceptance testing, multiple cylinders of concrete are test at how many days? -
Answer✅
2
, 28
Quiz_________________?
What is the most common type of Portland cement used in the construction field? -
Answer✅
Type I
Quiz_________________?
What chemical reaction takes place when Portland cement is hardening? -
Answer✅
Hydration
Quiz_________________?
When you need concrete to set quickly, what type of concrete should be used to produce high
early strength? -
Answer✅
Type III
Quiz_________________?
The quality of the cement mix depends primarily on the: -
Answer✅
Water-cement ratio
Quiz_________________?
What is the difference between fine and coarse aggregate? -
Answer✅
The coarse stone will not pass through a 3/8" sieve
Quiz_________________?
What type of sand is not a suitable substitute for aggregate? -
3
Quiz_________________?
How much does concrete weigh per cubic foot? -
Answer✅
150 lbs
Quiz_________________?
What is the range of moderate slumps for most concrete? -
Answer✅
3 to 4 inches
Quiz_________________?
What is the minimum temperature concrete should be poured on thin slabs? -
Answer✅
60 degrees
Quiz_________________?
Which types of concrete slabs are suitable for air-entrained concrete? -
Answer✅
Driveway, Sidewalk, and Exterior slabs
1
, Quiz_________________?
What temperature should concrete cylinders be maintained at during the first 48 hours prior
to testing concrete? -
Answer✅
60-80 degrees
Quiz_________________?
What is the most important factor in preventing surface scaling in concrete flatwork? -
Answer✅
Air Entrainment
Quiz_________________?
Air-entrained concrete is most vulnerable to what type of problem? -
Answer✅
Blistering
Quiz_________________?
Which admixture BEST allows for properly finishing a fresh load of concrete that has a high
temperature? -
Answer✅
Retarder
Quiz_________________?
What percent of the 28 day strength of concrete should be obtained in the first 7 days? -
Answer✅
65 to 70 percent
Quiz_________________?
For acceptance testing, multiple cylinders of concrete are test at how many days? -
Answer✅
2
, 28
Quiz_________________?
What is the most common type of Portland cement used in the construction field? -
Answer✅
Type I
Quiz_________________?
What chemical reaction takes place when Portland cement is hardening? -
Answer✅
Hydration
Quiz_________________?
When you need concrete to set quickly, what type of concrete should be used to produce high
early strength? -
Answer✅
Type III
Quiz_________________?
The quality of the cement mix depends primarily on the: -
Answer✅
Water-cement ratio
Quiz_________________?
What is the difference between fine and coarse aggregate? -
Answer✅
The coarse stone will not pass through a 3/8" sieve
Quiz_________________?
What type of sand is not a suitable substitute for aggregate? -
3
