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WorksheetsConstruction Materials Quiz
Total questions: 10
Worksheet time: 20mins
What is the main purpose of aggregates in concrete?
To provide color to the concrete
To reduce the volumetric changes in concrete
To increase the drying shrinkage of concrete
To absorb excess water in the mix
What percentage of the concrete volume do aggregates represent?
10%
25%
50%
75%
What is the size range for fine aggregates?
Less than 5 mm
Between 5 mm and 10 mm
Greater than 20 mm
Between 10 mm and 20 mm
Which type of aggregates are those retained on the 4.75 mm sieve?
Lightweight aggregates
All-in aggregates
Coarse aggregates
Fine aggregates
What is the main advantage of using rounded aggregates in concrete?
They increase voids content
They reduce workability
They absorb excess water
They improve the strength of concrete
What is the unit weight range for normal weight aggregates?
2900 - 5200 Kg/m3
300 - 1850 Kg/m3
2200 - 2600 Kg/m3
1500 - 1850 Kg/m3
What does specific gravity of aggregates indicate?
The mass of the aggregates including voids
The color of the aggregates
The density of the aggregates compared to water
The particle size distribution of aggregates
What is the formula to calculate bulk density of aggregates?
W/V
Ws/V x 100
Ws/V
Ws/V - W
What does sieve analysis determine for aggregates?
The water absorption of aggregates
The porosity of aggregates
The particle size distribution of aggregates
The specific gravity of aggregates
What is the maximum allowable percentage of clay and fine materials in aggregates according to Egyptian Standards?
8%
4%
2%
6%
