Concrete as a construction

frizzflowerUrban and Civil

Nov 29, 2013 (3 years and 4 months ago)

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Concrete as a construction
material

What Is Concrete Used For?


Construction Material






Art Work

Concrete Bench made by 8
th

grade students

Question


What other concrete products and
applications can you think of ?

Why Is Concrete Used?


Economics


Inexpensive, readily available



Material Properties


Long Lasting


Molded into a desired shape


Great insulator


Hard

Material Properties (cont.)



Great Compressive Strength (up to 8000
psi)




Poor Tensile Strength (almost 0)


Reinforcement methods ($)

Question




What is the difference between tension and
compression?


Question




Why would concrete ever be used in
tension?

Why Do We Reinforce Concrete?




Prevent cracking due to tension forces



How Do We Reinforce Concrete?


Steel rebar


Excellent in tension, poor in compression


Chicken Wire


Minimize thermal expansion

Pictures


Failed concrete structures due to earth
quakes