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20 questions
he process of selection of relative proportions of cement, sand, course aggregate and water, so as to obtain a concrete of desired quantity is known as the ________
Proportioning of reinforcement
Proportioning of concrete
Proportioning of cement
Proportioning of water
In _______ method of volumetric proportions, the proportions of cement, sand and coarse aggregate are fixed or beta really such as 1:2:4 or 1:3:6 etc.
Minimum void method
Maximum void method
Water-cement ratio method
Water-cement ratio method
The strength of well compacted concrete with good workability is depend only on the _________
Water content
Cement content
Water-cement ratio
Water-soaked ratio
The process of Rolling, folding and spreading of particle is known as the __________ of concrete.
Curing
Mixing
Grouting
Watering
The concrete having bulk density between 5 kN/m3 to 18 kN/m3 is known as _________
Coloured concrete
Lightweight concrete
No-fines concrete
Heavyweight concrete
The sound absorption of light weight concrete is _________
Medium
Bad
Good
Cannot say
The _________ is used to measure the workability of concrete mixture which is commonly used in the field.
Vee-bee test
Slump test
Compaction factor
Workability test
In ________ test, the workability of concrete is measured in the terms of internal energy required to compact the concrete fully.
Compaction factor test
Vee-bee test
Rotating table test
Slump cone test
The presence of moisture in the sand _____________ the volume of the sand.
Increases
Decreases
Shrink
Contract
Concrete can be formulated with high tensile strength, but always has lower compressive strength.
True
False
Which type of machine does the figure below represents?
Purifier
Water tank
Electric Cement Mixer
Harvesting machine
How many components are mainly used to prepare concrete?
5
3
2
4
As water cement ratio increases, ________ also increases.
Compressive strength
Tensile strength
Bleeding
Workability
Which component of concrete gives it desired compressive strength?
Water
Cement
Aggregates
Admixture
Which process comes after batching in manufacture process?
Transportation
Placing
Mixing
Compacting
In small works, concrete is transported using:
Conveyer belts
Pumps
Pans
Buckets
The figure above represents a:
Low slump
Normal slump
Shear slump
Collapse slump
Workability reduces with time.
True
False
Higher the cement content,
Higher aggregates
Lower workability
Higher strength
Lower strength
The size of commonly used specimen for compression test is:
50×30 mm
150x150x150 mm
150x50x50 mm
150×150 mm
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