WorksheetsMaterials Review
Total questions: 38
Worksheet time: 19mins
When a steel bar rusts, which property remains the same?
Stress
Strength
What is a typical density for normal weight concrete?
1500-2000 kg/m3
2000-2500 kg/m3
2500-3000 kg/m3
2500-3000 kg/m2
What type of failure does concrete experience?
Brittle
Ductile
If the aggregates are rounded and smooth:
There is no need to change the water content
The water content needs to increase
The water needs to decrease
If the aggregates are coarse, does the Fineness Modulus:
Decrease
Increase
Stay the same
Adding Molybdenum to steel will result in which of the following:
Promotes an austenitic structure
Improves high-temperature strength
Increases toughness
Restricts grain growth
Adding sulfur to steel will result in which of the following:
Increase toughness
Improves high temperature strength
Adds machinability
Promotes grain refinement
When the yield strength is not well defined, what method is used to approximate it for aluminium?
0.2% extension method
0.5% extension method
0.5% offset method
0.2% offset method
Poisson's ratio is defined as:
Lateral strain/longitudinal strain
Longitudinal strain/lateral strain
In steel, if the grain size is smaller:
The strength increases
The strength decreases
Toughness decreases
There will be more plastic deformation
What is a typical water/cement ratio:
0.30-0.35
0.35-0.40
0.40-0.45
0.45-0.50
When is an accelerator admixture used?
Dry weather
Wet weather
Hot weather
Cold weather
If the leaves change colour and fall, the tree is
Hardwood
Softwood
Which of the following pavement maintenance methods increases the surface friction?
Fog seals
Slurry seals
Chip seals
Micro-surfacing
In which direction is wood the strongest?
Tension parallel
Compression parallel
Compression perpendicular
Bending
What does Type A steel refer to:
Atmospheric corrosion-resistant
Atmospheric corrosion-resistant weldable steel
Weathering steel
Weldable notch tough steel
If rebar has one line through 5 spaces, the rebar grade is:
250 MPa
400 MPa
500 MPa
600 MPa
Who received the patent for the aluminium electrolytic production process?
Paul Heroult
Charles Hall
Julia Hall
In the aluminium alloy designation Alloy 6061-T6, what does the T stand for?
Thermally treated
Strain hardened
Annealed
As fabricated
In the aluminium alloy designation Alloy 6061-T6, what does the 6xxx stand for?
Silicon alloy
Magnesium alloy
Magnesium & silicon alloy
Zinc alloy
What was the ASTM standard used in your steel lab?
ASTM C39
ASTM E8
ASTM S45
ASTM G5
Mixing cement and water, what type of reaction is occuring?
Hydration
Oxidation
Type III cement can also be referred to as:
GU - General Purpose
HE - High Early Strength
LH - Low Heat of Hydration
MH - Moderate Heat of Hydration
Which one is NOT a principal factor that influences the physical properties of steel?
Carbon content
Impurities and alloying elements
Treatment performed
Water content
What is the percentage of carbon that defines steel?
0.02-2.11%
2.11-6.7%
6.7-10%
Which one is NOT the name of a Clay Brick Manufacturing method?
Extrusion Process
Molding Process
Laying Process
Which of the following aggregate type is susceptible to frost damage?
High porosity rocks
Low porosity rocks
Fine pores and Low permeability
Carbonation occurs in concrete because of:
Low pH
High pH
Excess load
High density
Which is NOT a way to prevent corrosion?
Increased concrete cover
Use of non-corrosive reinforcement or coatings
Use of corrosion inhibitors
Larger aggregates
Which of the following is NOT a way to increase slope stability?
Lowering the water table
Adding vegetation
Load restriction
Removing soil at the bottom of the slope
Which part of the tree is used to allow the movement of sap?
Cambium
Sapwood
Heartwood
Inner bark
In wood, which direction will have the highest shrinkage?
Tangential
Radial
Lengthwise
Which one is NOT required for decay to occur within wood?
Adequate moisture content
Low temperatures
Supply of oxygen
Food (wood)
Which is NOT a type of polymer?
Elastomers
Elastoplastics
Thermosets
Thermoplastics
Which one is NOT a deterioration method for polymers?
Solvent
UV light
Vermin attack
Excess water
Which furnace, used for steel production, reduces the sulfur and phosphorous levels?
Open Hearth Furnace
Basic Oxygen Furnace
Electric Arc Furnace
What occurs between points C and D?
Proportional limit
Yield stress
Ultimate stress
Necking
What is the microscopic image showing?
Concrete
Polymer
Timber
Steel
