Reinforced and reinforced concrete

 One development that may result in the rehabilitation of arch bridges is the use of reinforced concrete.

The material to be used for this is somewhat complex, because it has been found that concrete alone is not strong enough for tension, although it is admirable for compression.

The reinforced and reinforced concrete to be used consists of a solid mass, which surrounds a skeleton or steel reinforcement suitably arranged and arranged to resist the forces that are to act upon it.

The longitudinal steel bars are placed in the reinforced concrete pieces on the edge that must resist the traction; the rectangular pieces are the stirrups that resist the shear forces. Longitudinal pieces are placed on the compressed edge to facilitate the assembly of the reinforcement.

The first reinforced concrete bridge

Traditionally, JOSEPH MONIER has been regarded as the discoverer of reinforced concrete. MONIER was a gardener by profession and in 1867 he issued his first patent for the manufacture of gardening elements; in 1873 he issued another patent for a system of segmental arch bridges; it was in 1875 that he built the first reinforced concrete bridge: the 16.5 m long and 4 m wide Chazelet footbridge.

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