Reinforced concrete
Reinforced concrete is concrete
Concrete is a composite construction material, composed of cement and other cementitious materials such as fly ash and slag cement, aggregate , water and chemical admixtures.The word concrete comes from the Latin word...

 in which reinforcement bars ("rebar
A rebar , also known as reinforcing steel, reinforcement steel, rerod, or a deformed bar, is a common steel bar, and is commonly used as a tensioning device in reinforced concrete and reinforced masonry structures holding the concrete in compression...

s"), reinforcement grids, plates
Steel plate construction
Steel plate construction is a rapid method of constructing heavy reinforced concrete items. It was developed in Korea in 2004. At a steel fabricator, assemblies are constructed. Each assembly has two parallel plates joined with welded stringers. The assemblies are moved to the job site and...

 or fibers
Fiber reinforced concrete
Fiber-reinforced concrete is concrete containing fibrous material which increases its structural integrity. It contains short discrete fibers that are uniformly distributed and randomly oriented. Fibers include steel fibers, glass fibers, synthetic fibers and natural fibers...

 have been incorporated to strengthen the concrete in tension. It was invented by French
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 gardener Joseph Monier
Joseph Monier
-Overview:Joseph Monier was a French gardener and one of the principal inventors of reinforced concrete....

 in 1849 and patented
A patent is a form of intellectual property. It consists of a set of exclusive rights granted by a sovereign state to an inventor or their assignee for a limited period of time in exchange for the public disclosure of an invention....

 in 1867. The term Ferro Concrete refers only to concrete that is reinforced with iron or steel. Other materials used to reinforce concrete can be organic and inorganic fibres as well as composites in different forms. Prior to the invention of reinforcement, concrete was strong in compression, but weak in tension.