According to historical records, in 1900, the World Expo showed the use of reinforced concrete in many aspects, which caused a revolution in the field of building materials. French engineer Ainabik 1867 saw monier's flowerpots, tubs and water tanks made of barbed wire and concrete at the Paris World Expo, and was inspired, so he tried to apply this material to building construction. 1879 began to manufacture reinforced concrete floors, and later developed into a set of concrete structural beams strengthened with steel hoops and longitudinal bars. Only a few years later, when he built an apartment building in Paris, he adopted improved reinforced concrete main columns, beams and floors, which are still widely used today. 1884, German construction company purchased monier's patent and conducted the first batch of reinforced concrete scientific experiments to study the strength and fire resistance of reinforced concrete. Bonding force between reinforcement and concrete. 1887, German engineer Collen first published the calculation method of reinforced concrete; Wilson, an Englishman, applied for a patent for reinforced concrete slab; American Hai Ete experimented with concrete beams. From 1895 to 1900, France built the first batch of reinforced concrete bridges and sidewalks. 19 18 Abram published the famous water-cement ratio theory to calculate the strength of concrete. Reinforced concrete has become an important material to change the world landscape.
So the inventor of concrete was Joseph maunier, a Frenchman in the 1960s. He is a gardener. There is a saying that one day in 1865, monier, a French gardener, tried to weave iron wires into the image of one root to water cement, sand and pebbles with better adhesion while laying flower beds. As expected, he made a new flower bed, which won't break. He even encouraged others to break it, but no one could break it. This is the birth of concrete. Later, the Frenchman Joseph maunier obtained a patent for the invention of reinforced concrete.