20 Questions
What is the main difference in the manufacturing process between steel and concrete?
Steel is manufactured under controlled conditions in sophisticated plants, whereas concrete involves the purchase of raw materials and mix design.
What does the analogy 'Cement is to concrete what flour is to a cake' imply?
The contractor's expertise determines the final quality of concrete, similar to how the baker's skills affect the taste of a cake.
What is the role of the contractor and supplier in determining the actual quality of concrete?
They play a significant role in determining the actual quality of concrete in the finished structure.
Why is the quality of cement hardly the cause of faults in a concrete structure?
Because there are several concrete mixes that could be employed to produce concrete of the same strength properties.
What is the matrix in a concrete mix?
The paste formed by cement and water
What is the term for freshly mixed concrete before it sets and hardens?
Wet or green concrete
What is the classification of concrete based on bulk density?
Lightweight (500-1800 kg/m3)
What does a nominal mix refer to in the context of concrete?
Mix proportions specified by the proportions of different composing materials
What is the defining criteria for good concrete?
Satisfactory in both the fresh and hardened states
What is the term for concrete placed at the site where it will be used?
In-situ concrete
What makes concrete an ideal material for building structures to control, store, and transport water?
Excellent resistance to water
Which property of concrete allows it to maintain structural integrity in a fire for 6-8 hours?
Fire resistant
What property of concrete allows it to store considerable quantities of heat from the environment?
Energy efficient
What feature offsets some of the other disadvantages of concrete?
Ability to consume waste
Why does concrete need to be reinforced with steel?
To carry the tensile stresses
What is the primary function of cement in civil engineering works?
To bond the aggregate particles together
What is the purpose of the kiln phase in cement production?
To produce clinker from the raw mix
What is a disadvantage of using formwork in concrete construction?
It is labor intensive and time consuming
Why has the Dry Process gained popularity in the manufacture of cement?
It requires lower energy consumption and is more environment-friendly
How does concrete provide protection to steel against corrosion?
By acting as a physical barrier to the ingress of aggressive species
Test your knowledge about the use of steel and concrete in construction. Explore the ways in which these two major structural materials are used, either independently or in combination, to create strong and durable buildings and infrastructure.
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