steel reinforced concrete

created by Mauddib

(thing) by Mauddib (6.7 y) (print) ? (I like it!) Fri Jan 21 2000 at 19:28:56

Concrete with steel bars in it to enlarge the thoughness of the concrete. Mostly used in bridges or other large structures.

(thing) by erikbjo (1.8 y) (print) ? (I like it!) Fri Feb 16 2001 at 4:12:22

Steel is often used to reinforce concrete for several reasons:

Steel and concrete perform better in different types of loading. Concrete is very good in compression, and almost worthless structurally in tension. Steel, on the other hand, is very good in tension, and due to ductility, not very good in compression. Therefore, the concrete will tend to bear compressive loads, and steel bears tensile loads.

Steel and concrete have pretty similar coefficient of thermal expansion, aka, they expand and contract due to changes in temperature at very similar rates. If this weren't true, significant deformation and stress would occur due to the conflicting forces.

Steel and concrete are chemically compatible. None of the common materials used for concrete react strongly with steel. If strong reactions occurred between the materials, for instance if the concrete corroded the steel, the combination would not be nearly as useful.

There you go, a fairly short discussion on the reasons for combining concrete and steel to make stronger, more efficient structures.

Walls-roof construction method	rebar	Le Corbusier	Rebar Detailer
Portland cement	Manifesto of Futurist Architecture	ground-penetrating radar	Gunite
Proof of sheep intelligence	Ove Arup	Prestressed concrete	ferrocement
Sunshine 60	Mid Ohio Sports Car Course	concrete type	compression
Henry Chapman Mercer	steel	concrete	Harry Chapin
Reenforced concrete	1867	U-Lock	tension

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