ferrocement

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2. Ferro cement is a form of reinforced
concrete using closely spaced
multiple layers of mesh and/or small
diameter rods completely infiltrated
with, or encapsulated in, mortar.
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4.  Cement mortar mix
 Skeleton steel
 Steel mesh reinforcement or Fibre-
reinforced polymeric meshes
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5.  •OPC and fine aggregate matrix is used
 •The matrix constitutes 95% of the
composite and governs its behavior
 •sand occupies 60 to 75% of the volume of
the mortar
 •Plasticizers and other admixtures are used
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6.  Chemical admixtures used in ferrocement serve
purposes of
• water reduction, with strength and reduces
permeability;
• Air entrainment, which increases resistance
to freezing and thawing;
• suppression of reaction between galvanized
reinforcement and cement
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7.  Water should be potable,
 clean, and free from organic matter - silt,
oil, sugar, chloride and acidic material
 pH equal or greater than 7
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8.  •Sand: cement ratio (by mass) 1.5 to 2.5
 •Water: cement ratio (by mass) 0.35 to
0.60
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9.  Forms the skeleton of the structure
 3 to 8 mm steel rods are used
 Used in the form of tied reinforcement or
welded wire fabric
 Used to impart structural strength in case of
boats, barges etc
 Reinforcement should be free from dust, rust
and other impurities
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10.  Consists of galvanized steel wires of diameter
0.5 to 1.5 mm, spaced at 6 to 20mm centre to
centre
 Available as woven/interlocking mesh and
welded mesh
 Welded wire mesh has hexagonal or
rectangular openings
 Expanded-metal lath is also used
 Made from carbon, glass etc.
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12.  It is a very durable, cheap and versatile material.
 Low w/c ratio produces an impermeable
structures
 less shrinkage, and low weight.
 high tensile strength and stiffness
 better impact and punching shear resistance
 undergo large deformations before cracking or
high deflections
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13. RC IN TENSION FERRO CEMENT IN TENSION
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14.  TANKS, CONTAINERS AND SILOS
. FLOORS AND ROOFS
. HEAVY DUTY FLOORS TILES
. WATERPROOFING
. MANHOLE COVERS
. WALL CUPBOARDS
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15. • ANTICORROSIVE MEMBRANE TREATMENT
. FERROCEMENT BUILDINGS
. FERROCEMENT DUCTS
. REHABILITATION OF STRUCTURES
. CHEMICAL RESISTANT TREATMENT
. IRRIGATION STRUCTURES
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16.  RURALAPPLICATIONS
 MARINE APPLICATIONS
 ELEVATION TREATMENT
 FIRE RESISTANT STRUCTURES
 SOIL STABILISATION
 PIPES
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17.  SEWER LINES
 BRIDGE
 FOOT BRIDGE
 STRENGTHENING OF RCC STRUCTURES
 SULPHATE RESISTANT CEMENT SAVING
 PRE-CAST FERROCEMENT STRUCTURES
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18.  Hand plastering
 Semi- mechanised process
 Centrifuging and
 Guniting
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19. THANK YOU
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