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WorksheetsDay 35-Oct 24-worksheet-Btech-Concrete technology part 1
Total questions: 15
Worksheet time: 9mins
Fineness modulus is defined as:
Ratio of fine to coarse aggregate
Average particle weight
Index representing mean particle size
Volume ratio of particles
Maximum size of aggregate used for RCC work is:
10 mm
20 mm
30 mm
40 mm
Weigh batching is preferred over volume batching because:
Fastest method
Prevents segregation
Avoids bulking error
Ensures uniform colour
Vibratory rollers in compaction are mainly used for:
RCC slabs
Electric poles
Dams
Pavement and mass concrete layers
The test most suitable for very dry concrete is:
Slump test
Flow test
Vee-Bee consistometer test
Kelly ball test
“Bulking of sand occurs due to adsorption of water on particle surface.”
True
False
The pH of water used in concrete shall not be less than (a) .
The process of measurement of ingredients of concrete is called (a) .
The slump value is the difference in height between mould and (a) .
Self compacting concrete has————-slump value
650 mm
200 mm
450 mm
150 mm
Find the odd one out (with respect to increasing workability):
Rounded aggregates
Water content
Angular aggregates
Good grading
Statement 1: Bulking increases with small % moisture. Statement 2: Maximum bulking at 5–8% moisture.
Only 1 true
Only 2 true
Both 1 and 2 true
Both false
Which of the following improve durability?
GGBS
Fly ash
Excess water
Honeycombing
Match the following
Slump test
Measures consistency
Compaction factor test
Low workability concrete
Vee-Bee test
Very dry concrete
Kelly ball test
Field penetration test
Concrete that compacts under its own weight without vibration is called (a) concrete.
