Steel fiber reinforced concrete
Keywords
Steel fiber reinforced concrete, multiphase composites, carbonization of concrete
Steel fiber reinforced concrete is a new type of multiphase composite material formed by mixing short steel fibers in disorderly distribution in ordinary concrete.
These randomly distributed steel fibers can effectively hinder the expansion of micro-cracks and the formation of macro-cracks in concrete, significantly improve the tensile, flexural, impact and fatigue resistance of concrete, and have good ductility.
Material: Randomly distributed steel fibers
Application: building material type multiphase composite
Function: hinder the expansion of micro-cracks in concrete and the formation of macro-cracks
Features: great compressive toughness
Adding an appropriate amount of steel fiber can effectively prevent the carbonization of concrete and the corrosion of concrete cracks and steel bars.
Carbonation of concrete means that the concrete itself contains a large number of capillary pores, and the carbon dioxide in the air reacts with the free calcium hydroxide inside the concrete to form calcium carbonate, which causes the concrete to loosen and fall off. After carbonization, the alkalinity of concrete is reduced. When carbonization exceeds the protective layer of concrete, in the presence of water and air, concrete will lose its protective effect on steel bars, thereby causing steel bar corrosion, shrinkage cracking, and even gel structure. disintegration and other issues.
