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WorksheetsRevision
Total questions: 20
Worksheet time: 10mins
The center of wood is called...
Sapwood
Annual ring
Pith
Bark
In which direction wood has higher strength?
Parallel to the grain
Perpendicular to the grain
Solar kilns...
Capture the energy of the sun
Have Low running costs
Have low environmental impact
All the above
What is the purpose of Cement in Concrete ?
To increase concrete hardness
To reduce shrinkage
To bind the materials together
To increase workability
Hydraulic Cement sets and hardens by the action of Air
True
False
Portland Cement is Hydraulic Cement
True
False
Which type of cement would you use in urgent works that require rapid setting and rapid hardening ?
42.5 N
42.5 R
42.5 L
Which type of cement has higher strength in 7 days?
52.5 N
52.5 L
Curing in concrete is required to expel the entrapped air (air bubbles) of fresh concrete
True
False
Curing minimize shrinkage
True
False
What is the Purpose of Superplasticizer?
To reduce shrinkage
To improve density
To improve workability
To reduce setting time
Which material presents better quality control during production?
Steel
Concrete
Which material presents better behavior against fire?
Steel
Timber
Concrete
Which material presents better behavior against bucking ?
Steel
Reinforced Concrete
Heat treatment can change the structural and physical properties of Steel
True
False
Alloys in steel can affect..
Strength of steel
Ductility
Hardness
All the above
A typical value for the density of steel is..
78 kg/m3
780 kg/m3
7800 kg/m3
78000 kg/m3
This failure is...
Brittle
Ductile
Which characteristics Engineering Bricks must have?
High Load Bearing capacity
Waterproof
Chemical Resistance
All the above
What is a typical compressive strength of Engineering bricks?
8 MPa
80 MPa
800 MPa
8000 MPa
