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Presented By
VIJAY
AKSHAY
ANJUL
Damp proofing in construction is a type of
moisture control applied to building walls and
floors to prevent moisture from passing into the
interior spaces. Damp problems are one of the
most frequent problems encountered in homes.
 MEMBRANE DAMP PROOFING
 INTEGRAL DAMP PROOFING
 SURFACE TREATMENT
 GUNITING
 CAVITY WALL CONSTRUCTION
 Surface treatments include any material applied
to either horizontal or vertical surfaces of
concrete to provide protection from dampness
 The surface treatment can be by using
penetrating sealers, surface applied corrosion
inhibitors, surface sealers, high-build coating,
membranes, overlays, and joint sealants.
 Penetrating sealers are materials that are
generally absorbed within the repaired concrete
and the depth of penetration varies by the
product, the size of the sealer molecule and
the size of the pore structure in the
concrete. The appearance of concrete surface
is usually not affected by applying these
sealers, only slight change in color may take
place
 Sealers
Boiled linseed oil ,Silanes , Siloxanes ,
Certain epoxies, Magnesium and Zinc
fluorosilicates.
 Surface-applied corrosion inhibitors are
designed to reduce the rate of corrosion. The
effectiveness and life expectancy of these
materials varies with the properties of the
concrete, site conditions and type of inhibitor
material.
 Sealers and paints are applied on the surface
of concrete where it adheres. The finished
thickness may be 0.03 to 0.25 mm. Pigmented
or naturally colored paints are used according
to the requirements, while transparent paints
result in a wet or glossy appearance. (such as
styrenebutadiene, polyvinyl acetate, acrylic or
blends of these with other polymers dispersed
in water).
 High-build coatings are materials with a dry
thickness between 0.25 mm and 0.75 mm
applied to the surface of the concrete. High-
build coatings alter the appearance of the
surface and may be pigmented. The base
polymers of such products include acrylics,
alkyds, vinyl esters, chlorinated rubbers,
urethanes, silicones, polyesters. These
products are generally used for decorative or
protective barrier systems but some products
may be suitable for use against rain, salts, and
mild chemicals.
 Membrane systems are treatments with
thicknesses between 0.7 mm and 6 mm applied
to the surface of the concrete, significantly
changing the appearance of the concrete
surface. They may be bonded, partially
bonded, or unbonded to the concrete surface.
Elastomeric membrane systems generally have
sufficient thickness and flexibility to bridge
narrow, nonmoving cracks of various widths.
 Overlays are depositions of 6 mm or greater in
thickness that can be bonded, partially bonded,
or unbonded to the surface of the concrete.
The details of the overlay materials and the
placing methods are given earlier. The
materials for the overlays may be Portland
cement concrete, latex modified concrete,
polymer concrete and silica-fume concrete.
DPC

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DPC

  • 2. Damp proofing in construction is a type of moisture control applied to building walls and floors to prevent moisture from passing into the interior spaces. Damp problems are one of the most frequent problems encountered in homes.
  • 3.  MEMBRANE DAMP PROOFING  INTEGRAL DAMP PROOFING  SURFACE TREATMENT  GUNITING  CAVITY WALL CONSTRUCTION
  • 4.  Surface treatments include any material applied to either horizontal or vertical surfaces of concrete to provide protection from dampness
  • 5.  The surface treatment can be by using penetrating sealers, surface applied corrosion inhibitors, surface sealers, high-build coating, membranes, overlays, and joint sealants.
  • 6.  Penetrating sealers are materials that are generally absorbed within the repaired concrete and the depth of penetration varies by the product, the size of the sealer molecule and the size of the pore structure in the concrete. The appearance of concrete surface is usually not affected by applying these sealers, only slight change in color may take place  Sealers Boiled linseed oil ,Silanes , Siloxanes , Certain epoxies, Magnesium and Zinc fluorosilicates.
  • 7.
  • 8.  Surface-applied corrosion inhibitors are designed to reduce the rate of corrosion. The effectiveness and life expectancy of these materials varies with the properties of the concrete, site conditions and type of inhibitor material.
  • 9.  Sealers and paints are applied on the surface of concrete where it adheres. The finished thickness may be 0.03 to 0.25 mm. Pigmented or naturally colored paints are used according to the requirements, while transparent paints result in a wet or glossy appearance. (such as styrenebutadiene, polyvinyl acetate, acrylic or blends of these with other polymers dispersed in water).
  • 10.  High-build coatings are materials with a dry thickness between 0.25 mm and 0.75 mm applied to the surface of the concrete. High- build coatings alter the appearance of the surface and may be pigmented. The base polymers of such products include acrylics, alkyds, vinyl esters, chlorinated rubbers, urethanes, silicones, polyesters. These products are generally used for decorative or protective barrier systems but some products may be suitable for use against rain, salts, and mild chemicals.
  • 11.  Membrane systems are treatments with thicknesses between 0.7 mm and 6 mm applied to the surface of the concrete, significantly changing the appearance of the concrete surface. They may be bonded, partially bonded, or unbonded to the concrete surface. Elastomeric membrane systems generally have sufficient thickness and flexibility to bridge narrow, nonmoving cracks of various widths.
  • 12.  Overlays are depositions of 6 mm or greater in thickness that can be bonded, partially bonded, or unbonded to the surface of the concrete. The details of the overlay materials and the placing methods are given earlier. The materials for the overlays may be Portland cement concrete, latex modified concrete, polymer concrete and silica-fume concrete.