Name: Score:
81 Multiple choice questions
Term 1 of 81
What happens in the concrete washout system?
The system is used to recycle hardened concrete only.
All leftover concrete is disposed of without recovery.
It filters out impurities from the fresh concrete before use.
Some ingredients like aggregates and water can be recovered from the remaining leftover
fresh concrete.
Term 2 of 81
Super Plasticizers (HRWR) reduce the amount of water by ______% in concrete.
5-10
12-30
40-50
1-5
Term 3 of 81
Aggregates are economic inert filler material.
True
False
,Term 4 of 81
concrete have enhanced placement and compaction, long-term mechanical properties, early--
age strength, volume stability, and service life in severe environments.
High-Performance Concrete
Self-consolidating Concrete
Pervious Concrete
Roller-compacted Concrete
Term 5 of 81
What kind of material is concrete?
ceramic
glass
metal
plastic
Definition 6 of 81
High strength of concrete
Less strength of concrete
We use a hollow sampling tube for collecting aggregate sample because :
concrete have enhanced placement and compaction, long-term mechanical properties,
early--age strength, volume stability, and service life in severe environments.
If water is polluted ( with chemicals), there will be no effect on concrete.
Low Water to Cement Ratio in Concrete
More Water to Cement Ratio in Concrete
, Term 7 of 81
Admixtures and SCMs can be used as 100% replacement for cement for economical benefit.
True
False
Term 8 of 81
The residue/lumps during cement kiln stage is called _______.
Gypsum
Clinker
Slag
Fly Ash
Term 9 of 81
Adding more water than needed in concrete will result in less strength.
True
False
Term 10 of 81
In compression testing, crushing the sample too fast with the higher loading rate can give us
accurate results.
True
False
81 Multiple choice questions
Term 1 of 81
What happens in the concrete washout system?
The system is used to recycle hardened concrete only.
All leftover concrete is disposed of without recovery.
It filters out impurities from the fresh concrete before use.
Some ingredients like aggregates and water can be recovered from the remaining leftover
fresh concrete.
Term 2 of 81
Super Plasticizers (HRWR) reduce the amount of water by ______% in concrete.
5-10
12-30
40-50
1-5
Term 3 of 81
Aggregates are economic inert filler material.
True
False
,Term 4 of 81
concrete have enhanced placement and compaction, long-term mechanical properties, early--
age strength, volume stability, and service life in severe environments.
High-Performance Concrete
Self-consolidating Concrete
Pervious Concrete
Roller-compacted Concrete
Term 5 of 81
What kind of material is concrete?
ceramic
glass
metal
plastic
Definition 6 of 81
High strength of concrete
Less strength of concrete
We use a hollow sampling tube for collecting aggregate sample because :
concrete have enhanced placement and compaction, long-term mechanical properties,
early--age strength, volume stability, and service life in severe environments.
If water is polluted ( with chemicals), there will be no effect on concrete.
Low Water to Cement Ratio in Concrete
More Water to Cement Ratio in Concrete
, Term 7 of 81
Admixtures and SCMs can be used as 100% replacement for cement for economical benefit.
True
False
Term 8 of 81
The residue/lumps during cement kiln stage is called _______.
Gypsum
Clinker
Slag
Fly Ash
Term 9 of 81
Adding more water than needed in concrete will result in less strength.
True
False
Term 10 of 81
In compression testing, crushing the sample too fast with the higher loading rate can give us
accurate results.
True
False
