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Ductal is revolutionary ultra high performance material that

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Ductal is revolutionary ultra high performance material that Powered By Docstoc
					    1- o que é



The Concrete by Atelier Francesco Passaniti (CAFP) is a revolutionary ultra-high
performance material that possesses a unique combination of superior properties including
strength, ductility, durability and enhanced aesthetics. CAFP has been designed to serve
contemporary architectural creativity and can be used in a highly diverse range of
applications.


The result of 10 years of research, CAFP is an ultra-high performance material with outstanding
characteristics that are unique in the world of mineral building materials.



  2- principais características


CAFP displays superior tensile and compressive strength and unrivalled ductility, which means
it can withstand significant deformations without failure, by gradually absorbing the dispersed
energy throughout its mass.

CAFPs innovative design qualities, which optimally combine a cement-based composite with
organic fibers, result in a range of products with a behavior similar to elasto-plastic materials.

Another of CAFP’s many assets is its outstanding durability, which can significantly reduce
maintenance costs. CAFP is preferred for its resistance to corrosion, abrasion, carbonation and
impact strength.

CAFP is easy to use ; supplied as a pre-mix that requires no formulation additives or passive
steel reinforcement. CAFP uses conventional concrete equipment and can be cast by pouring,
injection or extrusion techniques.

Above all, CAFP can be used as a self-consolidating material which can replicate fine formwork
detail or dry cast, facilitating the creation of highly architectural aesthetic structures.

CAFP provides the ability to create lighter structures, with reduced volumes and weight, which
leads to cost savings on the quantities of materials used, simplifying methods (prefabrication
can shorten deadlines) and reducing transportation - all of which facilitate artistic creativity for
bridges, tunnels, buildings and other construction sectors.

CAFP contributes to the protection of the environment to create the buildings of the future by
reducing the amount of air and water resources required. This is attributable to
   its exceptional durability
   its low consumption of natural resources associated to its use.
For the satisfaction of architects seeking to combine technological performance and
aesthetics. CAFP’s unique mechanical properties – compressive strengths (up to 200 MPa),
flexural strengths (up to 40 MPa) and ductility allow for longer spans, reduced sections and
volumes.

CAFP is preferred for its resistance to corrosion, abrasion, carbonation and impact
strength.

In non-structural applications, CAFP is used with non-metalic fibres. CAFP has the ability to
replicate the micro and nano-texture of the mould. When combined with the fluidity and the
ability to have a range of colours, the result is a material that provides a high quality surface
appearance together with high strength and durability.


CAFP has revolutionized the construction sector as the ideal material. Applications including
acoustic sound panels, facing walls, cornice outlines, flooring, kitchen countertops and other
applications are offered a wide range of textures due to its outstanding ability to replicate
mold, formwork and pattern surface detail.

Durability is one of CAFPs superior qualities, as this fiber-reinforced ultra-high performance
material provides aging capacity far greater than that provided by conventional concrete.

Due to its outstanding impermeability, CAFPs extremely low porosity nearly stops molecules
from diffusing.
Water (the primary culprit of aggression), cannot penetrate the core, providing it with excellent
resistance to freeze-thaw phenomena and exposure to sea water (chloride penetration),
sulfates, weak acids and carbonation.

CAFP retains its initial appearance with little or no deterioration to the surface texture and
color, even in the harshest environments.
Similar reasons explain why CAFP is resistant to stains and can be reinforced against dirt
and/or graffiti with specific treatments applied during production.
In addition, its outstanding resistance to shock, abrasion (comparable to granite) and fire all
add to its longevity and durability.

The benefits include easier upkeep and lower maintenance costs. And CAFP, which can be
solution-dyed with a very wide range of surface textures, is often used “as-cast” by architects,
with no use of paint or other coatings that require constant reapplication.

The fibers, like any metallic reinforcement, are protected by the low porosity, preventing the
product from corroding and surface damage as often seen on ordinary reinforced concrete
applications.
The micro cracks can disappear naturally, through “self-healing” qualities (regeneration by
absorption of ambient moisture).
3-Especificaçoes tecnicas

 Components

        Cement                                   Fibres (organic)
        Silica Fume                              Sand
        Mineral Fillers (Nano-fibres)            Superplasticizer
        Water




 DUCTILITY PRINCIPLE
 CAFP has the ability to deform while continuing to carry loads - even after the first sign of
 cracking. Its ductile behaviour was developed from a thorough understanding of the fibre-matrix
 interaction. The fibre-matrix slippage/breakage ratio during loading and over-loading provides a
 ductile behaviour with finely and well-dispersed micro cracking, unlike conventional concrete or
 fibre-reinforced cements.

  STRENGTH CHARACTERISTICS
 • Compressive Strength (cylinder)170-230MPa
 • Flexural Strength (3 point bending test)40-50 MPa
 • Youngs Modulus(E) 50-60 GPa
 • Total Fracture Energy 20,000-30,000 J/m² RHEOLOGY

 • Fluid to self compacting
 • Flow (Abrams cone) 50-70cm
 • Flow (ASTM shock table) 250mm

 DURABILITY
 • Chloride ion diffusion (CI) 10-12 m²/s
 • Carbonation penetration depth <0.5mm
 • Freeze/thaw (after 300 cycles) 100%
 • Salt-scaling (loss of residue) <10g/m
 • Abrasion (relative volume loss index) 1.2

 OTHER PROPERTIES
 • Density 2450-2550 kg/m³
 • Entrapped air content 2-4%
 • Freeze/thaw (after 300 cycles) 100%
 • Total porosity 2-6%
 • Post cure shrinkage <10-5
 • Creep coefficient 0.2-0.5

				
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