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Concrete (like stone) is very strong in compression but breaks almost instantly in tension. It is also weak in response to side forces and twisting forces.
Steel bars are very strong in tension but crumple and fold instantly in compression.
By putting steel reinforcement bars in concrete and pretensioning the bars before the concrete hardens creates a composite material that is strong in both compression and tension (with each material supporting the other) and also improves the response to side forces and twisting forces.
What else can I help you with?
What is role of main reinforcement in reinforced cement concrete?
Main reinforcements take the load
Where did countries get their reinforcements from during the world wars?
Countries in World War Two got reinforcements from drafting new recruits. once they had reinforcements, they would send where needed, or troops would be sent from barracks in nearby areas.
How do you calculate concrete needed?
length*breadth*depth of the structure=...........m3 of concrete is needed. .
What advance did the development of prestressed concrete represent?
Because it achieved its strength without heavy reinforcements, prestressed concrete could be used to build light, shallow structures such as bridges and roofs
What are the specific materials used in the construction of concrete structures?
Concrete structures are typically constructed using a mixture of cement, water, aggregates (such as sand and gravel), and sometimes additives or reinforcements like steel bars.
How many bags of concrete are needed per post?
Typically, one bag of concrete is needed per post.
Should you use salt water to mix concrete?
It is not recommended to use salt water to mix concrete as it can cause corrosion of metal reinforcements within the concrete, leading to structural issues over time. It is best to use fresh water for mixing concrete.
How to calculate how much concrete is needed for a project?
To calculate the amount of concrete needed for a project, you need to determine the volume of the area to be filled with concrete. This can be done by multiplying the length, width, and height of the area. Once you have the volume, you can then calculate the amount of concrete needed by dividing the volume by the coverage area of one cubic yard of concrete. This will give you the total number of cubic yards of concrete needed for the project.
How many bags of concrete are needed per fence post?
Typically, one bag of concrete is needed per fence post.
How many 50lb bags of concrete are needed per fence post?
On average, one 50lb bag of concrete is needed per fence post.
What kind of drill bit is needed for concrete?
Diamond Core Drill Bits are the best for concrete.
How much concrete is needed to effectively stop radiation?
Concrete is a common material used to shield against radiation. The amount of concrete needed to effectively stop radiation depends on the type and intensity of the radiation. Thicker layers of concrete provide better protection against radiation. Generally, a thickness of at least several feet of concrete is needed to effectively stop most types of radiation.
