Concrete is a material known for its great strength. Regardless, there are a few weaknesses, which must be taken in consideration in the design of concrete structural elements. Basically, concrete is made of three main ingredients: Portland cement, water, and aggregates (sand and stone).
It is well known that the moisture content of a piece of wood affects its properties. Indeed, when a piece of wood is dried naturally or in a kiln dryer, a decrease of the volume or shrinkage occurs. The effect is reversed (expansion) when the moisture content increases in the material.
Stainless steel made parts have revolutionized the industrial era due to their stability in various environments. The stability of this material is explained by the presence of a protective layer (commonly known as "passive layer") which is formed naturally on the surface of stainless steel components.
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