Types of concrete

What concrete:
Concrete is the architecture is composed of several materials, the bulk of this architecture is the rubble that is relevant properties of concrete block with a dough that becomes hardened by a chemical reaction between cement and water.

(1.1.2) concrete as a structural
Concrete in its hardened look as rocky high resistance to pressure - either in fresh condition looks as spandex can be formed within the chopping concrete is with skewers steel more common and frequently used construction materials in the iron to the easy availability of components and relative licenses to the material constituents.

(1.1.3) normal concrete (Plain Concrete)
Without any concrete and rebar used in concrete acts of mattresses beneath the foundations, as well as in the production of non-blocs exposed to tensile stresses as well as the flooring business, dams and resistance ranging between 150 kg / cm2 to 200 kg / cm2.

(1.1.4) of reinforced concrete (Reinforced Concrete)
It is an ordinary concrete with rebar joint resistance to tensile stresses and which must be considered as well as the Compatibility Equilibrium Equilibrium between stress and emotions in both iron and concrete and resistance ranging from 250-400 kg / cm 2.

(1.1.5) is a former concrete stress (Prestressed Concrete)
Is a type of normal concrete is give it a lot pressure stresses before they are loaded and these loads capable Bmlachah tensile stresses resulting from impact loads and thus do not need to rebar where the final outcome of the stresses along the strip after the download (operating) often stresses pressure ..


(1.1.6) Ready Mixed Concrete (Precast Concrete)
Concrete is poured and treated until completely hardened in Almsnh then transported to the origin and the concrete can be extraordinary - armed - Prestressed.


(1.1.7) concrete high resistance (High Strengthy Concrete)
Is concrete with a resistance of more than 600 kg / cm2 was sometimes up to 1,400 kg / cm 2 can be obtained by using additional material such as plasticizers Super- Plasticigers so is reduced mixing water to the hilt with access to the same susceptibility to run and thus get resistance High.

(1.1.8) high-performance concrete (High Performance Concrete)
Is the concrete has qualities and specific characteristics allow it to operate in the middle of certain conditions and these characteristics may include fresh concrete properties (the ability to run - folk ...) or include the hardened concrete properties (ground resistance - scratching - frost - deflation) and these characteristics may be combined or so give a separate performance is different from the usual performance of traditional concrete. And high-performance concrete which is not required to have a high resistance.

(1.1.9) Fiber Reinforced Concrete (Fibre Concrete)
It is the concrete containing the fiber and these fibers are distributed regularly distributed in all directions through the concrete block.
The fiber also has the ability to improve the resistance of concrete in tensile and shear Alnhina and shock and deflation and reduce the widening cracks.
The most important characteristics of the fiber it increases the value of a calibrated durability dramatically and thus mechanical fracture in the concrete turns to break the non-Qsfi and gradual Ductile Failure to break suddenly and Qsfi) for (Brittle) Sudden Failure.


(1.1.10) concrete spraying (Gruite) Shotcrete
Mix consisting of cement and sand by 4: 1 and almost plus water to obtain the appropriate degree of operating these concrete pumping compressed air to the surface to be Tbtinh used in the restoration work and the lining of tunnels and canals.
The disadvantage of these types of concrete exposure to shrink significantly as a result of the large number of water or possible non-adhesion and cohesion of the components to surfaces that are sprayed over it.


(01/01/11) polymer concrete (Polymer-concrete)
Is a private concrete can be obtained to treat ordinary concrete polymer materials which act as a carnivore or a filler for the spaces between the granules and aggregates, which represents 6-8% of the weight of concrete.
(Polymer - membership is made up of many of the high molecular weight molecules of similar material such as poly-ester Polyster - epoxy Epoxy A disadvantage of high cost, where it represents (2-3) like conventional concrete advantages and high pressure resistance 1000 kg / cm 2 - tensile strength 100 kg / cm 2 high resistance to shrinkage of external factors.

(1.1.12) Lightweight Concrete (Light weight concrete)
Lahti is a concrete weighing less than 2000 kg / m 3 and the intended use is to reduce the weight of origin, thus reducing the costs of foundations and there are three types of light concrete:
Concrete-free thin material Fine less Concrete
Concrete rubble Alhakev Light weight Aggregate
Concrete outtake (of cells) Cellular Concrete


(1.1.13) heavy concrete heavy Weight Concret
It is the concrete that volumetric weighing 2400 kg / cm 2-6000 kg / cm 2 and the intended use of prevention of nuclear radiation and atomic as the concrete of the absorption of these rays commensurate with Reverse weight.


(01/01/14) mass of concrete (Mass Concete)
Concrete is of great blocks and used the rubble of size 15 cm They are used in concrete dams and reservoirs ground.


(01/01/15) concrete with trapped air (Air Eatrained Concrete)
Concrete is the proportion of trapped air does not exceed 6% of the volume of concrete (as a result of the use of certain additives - Rguiat or materials for producing hydrogen interaction with cement powder, ammonium or zinc).
It is characterized as more concrete Easy to operate and has a high resistance to weathering and especially frost.

(01/01/16) fresh concrete (Fresh Concrete)
Is the concrete that starts from the moment you add water to the mixture components and until the moment of occurrence of primary suspicion.
(Stage is characterized by the ability to confuse, transport and casting It represents 1-2 hours).

(01/01/17) Green concrete (Green Concrete)
Concrete is formed in the period from the beginning of the doubt cement paste and until the beginning of hardening (from primary suspicion - suspicion final).
At this stage does not allow mixing in transport or casting It represents 24 hours of the beginning of the casting (which concrete is not strong enough to withstand any stresses).

(01/01/18) Hardened Concrete (Hardened Concrete)
Concrete is in the stage after the final stage is characterized by doubt increase the pressure resistance and the ability to withstand the porter with the passage of time and represents the period from the end of 24 hours until the end of the life span.

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