A simple survey to analyse the current level of knowledge and to create interest towards the intended training. Session.
Cement
Sand
Stones
Water
Rate this question:
Strong in compression
Strong in tension
Workable before hardening
Less resistant to fire (compared to steel)
Can be moulded into almost any shape
Rate this question:
Concrete is casted in one location only.
One continuous pour without any construction joints.
Refers to concrete already casted in its place in the formwork.
Concrete is poured directly into where it forms the structure
Rate this question:
They are normally manufactured in a factory
They are transported to site to form part or whole of a structure
They can only be used for non-structural (i.e. not designed to carry loads) structures
They can also be precasted on site
Rate this question:
They are normally manufactured in a factory
They are transported to site to form part or whole of a structure
They can only be used for non-structural (i.e. not designed to carry loads) structures
They contain prestressed cables
Rate this question:
Cement is one of the ingredients in concrete.
Concrete is one of the ingredients in cement.
Concrete is hardened cement.
Concrete contained steel bars.
Rate this question:
True
False
Rate this question:
True
False
Rate this question:
It releases heat.
It requires water.
It produces water.
It is a chemical reaction between cement and water.
It is a irreversible process..
Rate this question:
Sand
Natural occuring stones
Gravel
Rocks crushed to certain sizes
All of the above
Rate this question:
Rounded
Angular
Irregular
Flaky
Elongated
Rate this question:
The strength of the aggregates.
The distribution of its particle size.
The PH of the aggregates as measured in accordance to standards
The hardness of the aggregates.
The durability of the aggregates.
Rate this question:
Bigger aggregates results in higher workability.
Smaller aggregates enhance hydration of cement, thus higher strength.
Bigger aggregates prevents honeycombing in concrete
No difference in affecting working with or quality of concrete. Only costs are different.
Rate this question:
1.5mm
4.75mm
10.5 mm
20.0mm
Rate this question:
Workability of fresh concrete
Compressive strength of hardened concrete
Heat of hydration
Setting time
Rate this question:
Aggregate Crushing Value
Aggregate Impact Value
Ten per cent fines value
Le Chatelier Test Value
Rate this question:
Creep of concrete
Shrinkage of concrete
Workability of concrete
Slump of concrete
Rate this question:
Determine the net water-cement ratio for a batch of concrete
Calculate the slump when slump test is not available
Estimate workability before actual batching
Determine the heat of hydration of cement
Rate this question:
The increase in the volume of a given mass of fine aggregate caused by the presence of water
The overloading of fine aggregate in lorries for mass production of concrete
The ratio of fine aggregate to coarse aggregate
The estimation of fine aggregate required for a production batch of concrete
Rate this question:
Impurities interfering with the process of hydration of cements
Coatings preventing the development of good bond between aggregate and the cement paste
Unsound particles which are weak or bring about chemical reaction between the aggregate and cement paste
Unsoundness of aggregates affecting the ability of the aggregate to resist excessive changes in volume
Rate this question:
Volume changes result in the deterioration of concrete
Its strength is solely dependent on cement paste
The ratio between fine and coarse aggregates is too large
It is susceptible to chemical attack
Rate this question:
Swelling which results in disruption of concrete with the spreading of pattern cracks and eventual failure of the concrete structures
Low slump values affecting the workability of concrete contributing to the occurrence of honeycombs
Low early strength
High water requirements which directly affect concrete strength
Rate this question:
True
False
Rate this question:
True
False
Rate this question:
Dense concrete and needs less quantity of fine aggregate and cement paste
Higher workability that will lead to higher strength
Higher resistance to chemical attacks on concrete thus protecting the reinforcement and increase its durability
More sound aggregates directly producing more volume stability
Rate this question:
Potable Water
River Water
Effluents from sewerage works
Water containing large quantities of chlorides
Rate this question:
An accelerator
A retarder
An air-entraining agent
A water-reducing admixture
Rate this question:
Slows down the initial rate of hydration of cement
Prolong the setting of the cement paste in concrete
Affect the 28-day strength
Enhance the chemical resistance of concrete
Rate this question:
Higher workability
Increased strength
Increased density
Increased chemical resistance
Rate this question:
Improved workability with lesser amount of water
Lower heat of hydration and thermal shrinkage
Improved resistance to attack from salts and sulphates from soils and sea water
Increased early strength in concrete resulting from the fineness of fly ash
Rate this question:
Lower rate of heat evolution
Refined pore structure
Reduced permeability
Improved resistance to sulphate attack
Higher workability compared to when fly ash is used instead of GGBS
Rate this question:
Slump test
Compacting factor test
Vee-Bee consistency test
Flow test
Mortar prism test
Rate this question:
3, 25
5, 55
7, 75
3, 55
Rate this question:
25 mm to 125 mm
100 mm to 200 mm
125 mm to 250 mm
150 mm to 300 mm
Rate this question:
Compressive strength
Tensile strength
Flexural strength
Workability
Rate this question:
Compressive strength is inversely proportionate to water-cement ratio
Water-cement ratio does not affect compressive strength
Compressive strength is directly proportionate to water-cement ratio
There is very little relationship between water-cement ration and compressive strength.
Rate this question:
Option 1
Option 2
Option 3
Deformation of structure under sustained load
Deformation of structure under tensile loads
Cracks due to rapid evaporation of water from the surface of concrete
Permeability formed due to lack of compaction
Rate this question:
Being due to loss of water by evaporation from the surface of concrete
Having the possibility of causing surface cracking
The result of adding too much water into concrete resulting in low slump
The the loss of plasticity due to omission of using plasticizers
Rate this question:
The shrinkage that takes place after the concrete has set and hardened.
Most of it takes place in the first few months of casting.
It is caused by the withdrawal of water from concrete stored in unsaturated air voids.
It happens when the mix is too dry and happens always to concrete mix of low slump.
Rate this question:
It happens when excess water in concrete evaporates leaving voids inside the concrete element creating capillaries.
It affects the volume of moisture which may pass through the concrete
It can be avoided through proper selection of ingredients and mix proportioning
It can be reduced by using low heat cement instead of Ordinary Portland Cement
Rate this question:
True
False
Rate this question:
Micro cracks developed during production and service
Macro cracks developed during production and service
Voids developed during production and service
How well curing is carried out
Rate this question:
Heat of hydration
Sulphate attack
Corrosion of steel reinforcement
Type of mixer used
Rate this question:
True
False
Rate this question:
C denotes normal and heavy-weight concretes
C denotes light weight concrete
25 denotes cylinder strength and 35 denotes cube strength
25 denotes cube strength and 35 denotes cyclinder strength
Rate this question:
Rebound Hammer Test
Ultrasonic Pulse Velocity (UPV) Test
Air-void System Test
Rapid Analysis Machine (RAM) Test
Rate this question:
Ultrasonic Pulse Velocity (UPV) Equipment
Schmidt hammer
Impact-echo Test Apparatus
Cover meter
Rate this question:
Quiz Review Timeline (Updated): Mar 21, 2023 +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
Wait!
Here's an interesting quiz for you.