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1924. The concrete enters the picture

Paving with concrete mosaic.In the field of construction techniques, the major innovation of the first quarter century is the emergence of reinforced concrete, Engineer M. Hennebique invention. Its universal recognition came during the Universal Exhibition of London in 1924, and in the thirties, the 80 percent of the bridges are already built with this material. At the same time, it begins to replace labor for construction machinery: bulldozers, water tanks, mixers ... Yes, all the time being imported. At the end of this period they were circulating on our roads almost 113.000 four-wheeled vehicles.

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