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Tech.-Concrete Part 2
Test Description: Plus prob.solv and 7 resources
Instructions: Answer all questions to get your test result.
1) How should concrete be maintained while curing?
A
semi-moist
B
dry
C
semi-dry
D
wet
2) What should the weather be like when you are going to pour concrete?
A
stormy and humid
B
cool and overcast
C
hot and dry
D
rainy and hot
3) Identify the appropriate pieces of safety gear to be worn when pouring or mixing concrete.?
A
dustmask, safety glasses, sneakers, waterproof gloves
B
dust mask, sunglasses, water proof boots, waterproof gloves
C
dust mask, safety glasses waterproof boots, waterproof gloves
D
dus tmask, safety glasses flip flops, waterproof gloves
4) If the weather conditions are hot and dry when you are pouring and curing concrete, what does it do to it?
A
drys it out, wicks the moisture out of it
B
makes it lumpy
C
makes it moist
D
makes it coarser
5) What is the difference between cement and concrete?
A
cement is the finished product and concrete is the ingredient or gray powder
B
cement is the pre-made wet mix and concrete is what it is called when it cured
C
cement is the the ingredient or gray powder in concrete and concrete is the finished poroduct
D
cement is another name for concrete
6) What is the most common name and type of cement?
A
Pittsburg
B
Pratt and Lambert
C
Portland
D
Philadelphia
7) What is the best water-to-cement ratio to use to make concrete?
A
.25 to 1
B
.75 to 1
C
.5 to 1 or 1 to 2
D
3 to 1
8) What happens to concrete if the aggregates are not clean?
A
makes it rougher
B
not as strong
C
makes it stronger
D
makes it smoother
9) What percentage of the concrete's volume is taken up by the aggregates?
A
40% to 50%
B
50% to 60%
C
75% to 85%
D
65% to 75%
10) How long does it take for concrete to reach its greatest strength?
A
several years
B
several months
C
several weeks
D
several days
*select an answer for all questions
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