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Clip description Keywords
How reinforced concrete works
How reinforced concrete works

Duration: 02:38

A reinforced concrete beam is tested for strength. Small cracks appear in the underside where it is under tension but this is normal.

 
The invention of reinforced concrete
The invention of reinforced concrete

Duration: 01:43

The invention of reinforced concrete in 1853 is described. The complementary properties of steel and concrete and their equal thermal expansion rates are critical to the success of this composite material.

 
The Romans invent concrete
The Romans invent concrete

Duration: 04:03

A short introduction into the diverse ways in which concrete, glass and other ceramics are used in the modern world, following a Roman recipe for making concrete.

 
Why concrete is brittle
Why concrete is brittle

Duration: 03:22

Compression and tension are observed in a concrete beam under load. The tension in the underside of the beam causes it to break.

 

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