The objective of engineered cementitious
composites is to develop a robust and flexible material that can be utilized in
various purpose where fiber reinforced concrete can’t be used. It is the newest
concept.
The formation of cementitious materials with high
ductility is useful for structural applications. The engineered cementitious
composites contain properties of high strength concrete having improved tensile
strain capacity.
Definition of Engineered Cementitious Composite
The
components of engineered cementitious composite are identical to fiber
reinforced concrete along with cement, sand, water, fiber, and a few chemical
additives. Contrasting to the fiber reinforced concrete, the engineered
cementitious composites do not contain huge volume of fiber.
The
method for blending engineered cementitious composites is equivalent to that
utilized for the normal concrete. The engineered cementitious composites are
cost-effective as less fiber is applied and they retain the desired
characteristics of strength and ductility.
The
main variance in the properties of engineered cementitious composite and fiber
reinforced concrete is that as soon as the engineered cementitious composite is
cracked strain is solidified whereas the fiber reinforced concrete does not demonstrate
such a behavior.
In fiber reinforced concrete, the crack forms with the crack of
the fibers because of that the bearing strength of the stress is reduced.
Besides, the engineered cementitious composites contain a high fracture
toughness that has similarity with aluminium alloys, and the damage tolerance
is tremendously high.
Usage
Of Engineered Cementitious Composite
Engineered cementitious composites are utilized in shear elements
which are dependent on a cyclic loading, in the mechanical components of the
beam and column coalition, and for general structural repairs.
These
composites are generally applied in structures which contain a high energy
absorption, along with dampers, steel element joints and for hybrid steel
connections.
Beside, structural applications, these compounds can be utilized
as a shielding layer for enhancing the corrosive resistance of structures.
Other probable targets of engineered cementitious composites contain
underground structures, highway pavements, and bridge decks.
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