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• Building materials which have less dependence on natural resources
• Building materials which are based on agricultural & industrial waste
• Construction systems which optimizes the use of cement, sand & steel
i.e. prefab systems, factory made building components
• less dependence on water, sand, aggregates during construction
• technologies which are not dependent on fossil fuels
• zero construction & demolition waste
• Materials & systems based on renewable resources
• Wood substitutes based on plantation timber
NAREDCO-BMTPC Conferenc
New Delhi, 24th July, 201
Emerging Technologies in Housing
& Building Construction
Building Materials & Technology Promotion Council
Ministry of Housing & Urban Poverty Alleviation
Government of India
Present Aim of the
Government of India through
Pradhan Mantri Awas Yojana
Housing for All (Urban)
by 2022
It is envisaged to construct 20 million houses by 2022 in
urban area and about 40 million houses in rural areas
(urban : 2.5 million houses a year, 7000 houses per day)
Conventional Building Materials
Finite Resource Base
CONVENTIONAL
BUILDING MATERIALS
Brick, cement, steel, stone, timber,
glass, plastics, ceramics and other
metals
DIRECT CONSEQUENCE
cost escalation leading to increased
cost of shelter
SHORT SUPPLY
Demand of Materials
IN
IN--DIRECT CONSEQUENCE
Rapid & irrationally managed utilization
of finite natural resources
POSSIBLE MANIFESTATIONS
Environmental degradation; Enhanced use of fertile toptop-soil, Deforestation, LimeLimequarrying, Surface working in stone belts
Factory made products like cement, steel etc. calls for high energy input
Enhanced cost on account of transportation
QUALITY
Need of the Hour
COST
• Use of renewable resources for building
materials
EFFECTIVENESS
• Use of raw materials resources based on waste
products
• Efficient use of existing conventional materials by
producing factory made (pre-cast)
(pre
building
components
• Affordability and sustainability
• Industrialization of housing sector
Requirements for mass housing
• Quality (Safety, Performance,
Durability) of construction
• Time required for construction,
• Cost of construction
Emerging Trends in Housing construction
Precast construction
Tunnel form construction
Large area formwork construction
Lightweight concrete construction
Cold-Formed
Formed Steel (CFS) housing system
GFRG building system
EPS Panel system
Integral in-situ
situ construction
(Mass Housing)
Monolithic Concrete
Construction Technology
Fast Track Construction
Technology
Assembly of precast
concrete elements
Industrialised 3-S
3 Technology
Factory set-up at Delhi
Precast yard and factory
set-up at Delhi
Industrialized 3-S
S System Using Cellular Light Weight
Concrete Slabs & Precast Columns
Prefab steel
construction
Light gauge steel structural
system
Light Gauge Steel Structural System
Frame is made of cold rolled high strength
steel sections and EPS panels for walling.
Internal walls covered with gypsum and
cementitious board. Exterior wall Sprayed with
cementitious material directly onto the studs.
Faster construction by prefabricated panels.
All structural components are precisely prepre
manufactured and simply assembled on site.
Enhanced Thermal & Acoustic insulation with
Boarding/Expanded Polystyrene (EPS)
/Rockwool/Vapour Barrier.
Eco friendly structure. Superior and
sustainable performance. Minimum Impact on
natural resources.
India
Erection
•
Tapcon Screw
ERECTION –DIFFERENT STAGES
Completed Building
Composite construction with
expanded polystyrene panels
GFRG Panel based Technology
Glass Fibre Reinforced Gypsum (GFRG)/ Rapidwall
Building System Technology (evaluated through PACS)
Glass Fibre Reinforced Gypsum
(GFRG)/ Rapidwall is a building panel
product, made essentially of gypsum
plaster, reinforced with glass fibres.
Used since 1990 in Australia. Although
its main application is in the
construction of walls, it can also be
used in floor and roof slabs in
combination with reinforced concrete.
The panels may be unfilled, partially
filled or fully filled with reinforced
concrete as per the structural
requirement.
Australia
Emerging Technologies under
various stages of evaluation…
Waffle crete System
Waffle crete System
Precast wall-floor
floor panels made from concrete and steel.
Anchor bolts, connection bolts, grouts etc. are used in
construction.
Casting
Rebar
Fe 415
Standard Sizes of Rebar – 12 mm, 16 mm & 20 mm
Mesh
6 mm mesh at 200 mm c/c
Concrete
M30 grade concrete without flyash
Concrete design as per IS 456, SP16
No coarse aggregates more than 20 mm size
Water-cement ratio : 0.4
Mix design with additives to get 10 N/mm2 strength in 18-24
18
hrs
Swift Lift Anchor
Two anchors in each wall panel
Four anchors in each floor panel
Spacing of anchor according to cutouts provision in respective panel
Pre-stressed
stressed Concrete
Hollow Core System
Pre-stressed
stressed Precast Prefab Technology Using Hollow Core
Slab, Beams, Columns, Solid Walls, Stairs, etc…contd.
Pre-cast
cast Concrete
Panel System
Precast Concrete Panels Using Concrete, Welded Mesh
And Plates, Polystyrene Core
Pre-cast
cast concrete load bearing panels are
made of reinforced concrete with a polystyrene
insulated core that varies in size from 40mm to
200mm depending upon the insulation
requirements.
The reinforced concrete panels are moulded in
specially designed steel moulds under
controlled factory conditions.
The buildings and houses can be designed to
suit any geographical position or environment
and can withstand wind speed in excess of
285km/hr.
The system does not impose any design
restrictions Due to cohesive structural design,
the system requires only strip foundation for
most buildings.
New Zealand
Precast Concrete Panels Using Concrete, Welded Mesh
And Plates, Polystyrene Core…contd.
Expanded Steel Mesh
Panel System
Technology Using Expanded Steel Mesh Panels,
Polystyrene Beads & Alleviated Concrete
The system is entirely a “on-site”
site” construction
process.
The houses are entirely, including the roof,
made up of structure panels assembled with
Beams.
Alleviated concrete, a special mix of concrete
and expanded polystyrene beads, hence
incorporating both the thermal and the sound
insulation, is injected into a steel structure
made of panels reinforced with beams
(galvanized steel wire studs / steel rods).
The Concrete base and the foundations of the
houses are prepared in a conventional
manner. The panels are tied to the soldered
wire mesh and to the iron rods in the base
and in the foundations and assembled in
accordance with the design of the house.
U.K.
Way Forward
Need to mainstream these technologies into
construction industry
Sensitization, dissemination at Pan India level
Capacity building, skill development
Publication of manuals, guidelines, codes, SOR
Demonstration buildings
Information, Education and Communication
Thank you for
your kind attention
www.bmtpc.org
“Creating Enabling Environment for Affordable Housing for All”