Repair, Retrofitting and Rehabilitation of Heritage buildings and historical structures. As Heritage buildings serves the integrity in and around the world, there is a great need to repair and restore them. STRUCTURAL CRACKS: 1. Epoxy injection 2. Polyurethane injection 3. Stitching of cracks Problem Identification Selection of suitable solution 9. EPOXY INJECTION 60002C Epoxy Injection Pump  Epoxy grout consists of epoxy resin, epoxy hardener and sand/aggregates.  Epoxy grout is non-porous and wouldn’t absorb any contaminant or stains. 10. STRUCTURAL CRACKS: 1. Epoxy injection 3. Stitching of cracks Problem Identification Selection of suitable solution 2. Polyurethane Injection 11. POLYURETHANE INJECTION Installed Injection Packer Polyurethane Crack Injection  Polyurethane injection involves a high pressure (typically 1500-3200 psi) injection of activated polyurethane through injection packers hammered into drilled holes.  These fast-setting foams are effective alternatives for applications involving only crack sealing (waterproofing) and not structural repair. 12. STRUCTURAL CRACKS: 1. Epoxy injection 2. Polyurethane Injection Problem Identification Selection of suitable solution 3. Stitching of cracks 13. STITCHING OF CRACKS 14.  ROOF LEAKAGES 1. Replacement of damaged roof with new clay roof tile and rearrangement of sealant. 2. Replacement of damaged roof portion by Asbestos roof and refill of sealant 3. Lead flashing Problem Identification Selection of suitable solution 15.  Peeling of walls and ceiling The most suited and effective solution for peeling of walls or plaster is Mughal Plastering i.e. Plastering with lime mortar. Its lifetime is 10 years.  Mold stains The effective solution is applying soap water under high pressure using pressure nozzle, controller and tube.  Vegetation growth The materials used to remove vegetation growth are Glyphosate, ammonia solution and lime mortar. Maluti temples, Dumka District, Jharkhand Problem Identification Selection of suitable solution

1. REPAIR & REHABILITATION
OF
HISTORICAL STRUCTURES
By:
CIVIL SCHOLAR
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2. Outline
Causes of deterioration and
Durability aspects1
Procedure2
Problems and their solutions3
Measures4
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3. Causes of deterioration:
Many structures may need repair and rehabilitation for
one of the following reasons :-
1. Deterioration due to environmental effect
2. New functional or loading requirements
3. Damage due to Accidents
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4. Charminar- Apr 30,2010 Great wall of china- Xishuiyu
Section- June 2015
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5. Procedure:
Identification of Building
Data collection (Preliminary
survey and tests)
Problem Identification
Selection of suitable
solution
The basic process flow employed in repair and rehabilitation includes:
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6. Identification of Building
Data collection (Preliminary
survey and tests)
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7. Identification of
Building
Data collection
(Preliminary survey and
tests)
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8. STRUCTURAL CRACKS:
1. Epoxy injection
2. Polyurethane injection
3. Stitching of cracks
Problem Identification
Selection of suitable
solution
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9. EPOXY INJECTION
60002C Epoxy Injection Pump
 Epoxy grout consists of
epoxy resin, epoxy
hardener and
sand/aggregates.
 Epoxy grout is non-porous
and wouldn’t absorb any
contaminant or stains.
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10. STRUCTURAL CRACKS:
1. Epoxy injection
3. Stitching of cracks
Problem Identification
Selection of suitable
solution
2. Polyurethane Injection
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11. POLYURETHANE INJECTION
Installed Injection Packer
Polyurethane Crack Injection
 Polyurethane injection involves a
high pressure (typically 1500-3200
psi) injection of activated
polyurethane through injection
packers hammered into drilled holes.
 These fast-setting foams are
effective alternatives for applications
involving only crack sealing
(waterproofing) and not structural
repair.
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12. STRUCTURAL CRACKS:
1. Epoxy injection
2. Polyurethane Injection
Problem Identification
Selection of suitable
solution
3. Stitching of cracks
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13. STITCHING OF CRACKS
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14.  ROOF LEAKAGES
1. Replacement of damaged roof with
new clay roof tile and
rearrangement of sealant.
2. Replacement of damaged roof
portion by Asbestos roof and refill
of sealant
3. Lead flashing
Problem Identification
Selection of suitable
solution
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15.  Peeling of walls and ceiling
The most suited and effective solution for peeling of walls or plaster is Mughal
Plastering i.e. Plastering with lime mortar. Its lifetime is 10 years.
 Mold stains
The effective solution is applying soap
water under high pressure using
pressure nozzle, controller and tube.
 Vegetation growth
The materials used to remove vegetation
growth are Glyphosate, ammonia
solution and lime mortar. Maluti temples, Dumka District, Jharkhand
Problem Identification
Selection of suitable
solution
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16. www.civilscholar.com

17. Measures:
 The Archaeological Survey of India
(ASI), is the premier organization for
the archaeological researches and
protection of the cultural heritage
of the nation.
 For the maintenance of ancient
monuments and archaeological
sites and remains of national
importance the entire country is
divided into 24 Circles.
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18. Measures:
(Air Pollution)
• The Archaeological Survey of India
(ASI) and Central Pollution Control
Board (CPCB) are continuously
monitoring ambient air quality in
254 cities / towns in the country
including vulnerable monuments.
• Implementation of Bharat Stage IV
(BS IV) norms in 63 selected cities
and universalization of BS IV by
2017.
As stated by Shri Prakash Javadekar, Minister of state for
Environment, Forest and Climate Change -May’2016
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19. Measures:
• Decision taken to leapfrog directly
from Bharat Stage IV to BS-VI fuel
standards by 1st April, 2020;
As stated by Shri Prakash Javadekar, Minister of state for
Environment, Forest and Climate Change -May’2016
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20. References:
 S Raja Subramaniam (2016). A Review on repair and rehabilitation of
heritage buildings. International Research Journal of Engineering and
Technology (IRJET), Volume 3, issue 4 | Apr-2016.
 N. Venkat Rao, M. Rajasekhar, Dr. G. Chinna Rao (2014). Detrimental
effect of Air pollution, Corrosion on Building Materials and Historical
Structures. American Journal of Engineering Research (AJER)- pp-359-
364.
 CPWD handbook of conservation of heritage buildings
 www.buildingconservation.com
 www.thehindu.com
 www.hansindia.com
 www.helifix.com
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21. THANK YOU
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