10 Questions
What are the two sets of criteria to consider when making concrete?
Long-term requirements of the hardened concrete – strength, durability and volume stability, Short-term requirements - workability
How is workability defined in the context of concrete?
Workability is defined as the amount of useful internal work necessary to produce full compaction without segregation.
What is consistence in the context of concrete?
Consistence is defined as the ease with which concrete will flow or used to describe the firmness of form of a substance.
Why is it vital to achieve a maximum possible density in concrete?
Because the strength of concrete is adversely and significantly affected by the presence of voids in the compacted mass.
What does the strength - density ratio indicate in concrete?
The strength - density ratio indicates the relationship between strength and density, with a higher ratio indicating higher strength for a given density.
Explain two sets of criteria to consider when making concrete as mentioned in the text above.
Long-term requirements of the hardened concrete – strength, durability, and volume stability; Short-term requirements - workability
Define workability in the context of concrete.
Workability is defined as the amount of useful internal work necessary to produce full compaction without segregation. It is required to overcome the internal friction between the individual particles in the concrete.
What is consistence in the context of concrete?
Consistence is defined as the ease with which concrete will flow or used to describe the firmness of form of a substance.
Why is it vital to achieve a maximum possible density in concrete?
It is vital to achieve a maximum possible density because the strength of concrete is adversely and significantly affected by the presence of voids in the compacted mass.
What is the significance of the strength-density ratio in concrete?
The strength-density ratio is significant because it indicates the relationship between strength and density, showing how changes in density affect the strength of concrete.
Test your knowledge of fresh concrete and its properties with this quiz on civil engineering materials. Explore the criteria and considerations for making concrete, including long-term requirements like strength and durability, as well as short-term requirements such as workability.
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