Which country invented reinforced concrete?

Reinforced Concrete It is generally believed that the French gardener Joseph maunier invented reinforced concrete in 1849, and in 1867, he obtained the patent of reinforced concrete flowerpots and reinforced concrete beams and columns applied to highway guardrails. 1872, the world's first reinforced concrete structure was built in new york, USA. After 1900, reinforced concrete structures were widely used in engineering fields.

1928, a new reinforced concrete structure, prestressed reinforced concrete, appeared and was widely used in engineering practice after World War II. /kloc-the invention of reinforced concrete and the application of steel in the construction industry in the middle of the 0/9th century made it possible to build high-rise buildings and long-span bridges.

Extended data

Working principle: The reason why reinforced concrete can work together is determined by its own material characteristics. First of all, the linear expansion coefficients of steel bars and concrete are almost the same, and there will be no excessive stress due to different environments. Secondly, there is a good bond between steel bar and concrete, and sometimes the surface of steel bar is processed into spacer ribs to improve the mechanical bite between concrete and steel bar;

When this is still not enough to transfer the tension between the steel bar and concrete, the end of the steel bar is usually bent with a hook of 180 degrees. In addition, the alkaline environment provided by calcium hydroxide in concrete forms a passive protective film on the surface of steel bars, which makes steel bars less susceptible to corrosion than neutral and acidic environments.

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