What is meant by the abbreviation jbi? It's building products and construction, made of reinforced concrete – a composite building material, which is poured concrete steel reinforcement. Separately must stay on the concrete. Concrete (from the French. Beton) – an artificial building material obtained as a result of solidification of rationally selected and compacted mixture of binder, inert fillers and water. In as inert fillers are usually used crushed stone (granite, gravel, limestone, etc.) and construction sand. Binder in concrete is often a cement content of which is 10-15% by weight concrete.
Concrete as a building stone is obtained as a result of cement hydration. Click Wells Fargo for additional related pages. Cement hydration – a chemical reaction of cement clinker components with water, resulting in formation of solid tumors, hydrates, which are filled initially filled with cement and water volume of a dense layering of gel particles, thereby causing hardening. Initially liquid or plastic cement glue turns into a result hydration in cement stone. The first stage of this process is called a thickening or setting, further – hardening or curing. Concrete strength increases most rapidly during the first 7-14 days.
Measured The compressive strength in kg/cm2 (1 kg/cm2 = 0.1 MPa) standard cubic specimens with an edge of 15 cm, which will be tested 28 days after curing at a temperature of 15-20 C. Hardening of concrete is accelerated at elevated temperature, so the manufacture of concrete products and concrete often used for the steam at normal pressure or in an autoclave. In addition to accelerating hardening of steaming concrete leads to the formation of a qualitatively new hydration products resulting from the interaction of Ca (OH) 2 with silica Si02. The quantity of cementitious materials is increasing, and the density and strength of concrete increases. Why is it being applied concrete products, rather than concrete? The fact that the concrete as a building material works very well in compression and does not operate in tension. Connection reinforcement and concrete in a composite material eliminates this drawback and allows produce durable construction to withstand heavy loads, both compressive and tensile strength. Reinforced concrete can be produced either directly at the construction site, and on company premises (factories reinforced concrete, Reinforced Concrete, DSC). However, under steady-state production is much easier to ensure consistent quality of products through the organization of operational control, reduce production time and reduce production costs. In modern enterprises manufacturing of precast concrete (reinforced concrete) includes the following main processes: preparing a concrete mix manufacturer of fittings and reinforcement molding of thermal processing Covering classify them by application, type of concrete structure, a method of reinforcement and other features. By purpose precast concrete products are divided into four main groups: for residential and civil buildings for industrial buildings for engineering structures for various purposes. Concrete products (JBI) is now used in virtually all areas of construction. Such a wide spread of reinforced concrete received from its major advantages, such as: low cost, manufacturability, rapid construction, fire resistance, chemical and biological stability.