All About Retrofitting | What Is Retrofitting | Why Need Retrofitting | Advantages And Disadvantages of Retrofitting of Building

What Is Retrofitting?

Why Need Retrofitting?

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  • Strength of the Existing concrete in the structure.
  • Require proper Access to work locations.
  • The magnitude of strength to be improved.
  • Cost of construction and maintenance.
  • Time management.
  • Clearance issues.
  • The seismic effect should consider.
  • Environmental condition.
  • The design reaches the service life.
  • Material strength or other technical indicators
  • Adding escalators and elevators involves the opening of floors and adding new components.
  • The acquisition of interlayers, such as manufacturer buildings to office buildings, needs several extra layers inside the plant.
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Methods of Retrofitting Building.

  1. Retrofitting of the Structural Components:
    • Jacketing
  2. Retrofitting of the Structural System
    • Beam Addition Method:
    • Seismic Wall Addition Method:
    • Seismic Isolation Method:
  3. Retrofitting of Foundation
    • Plie Addition Methods:
    • Ground Improvement Techniques:
  4. Retrofitting of Historic Structures
    • Post-Tensioning:
    • Epoxy
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1. Retrofitting of the Structural Components

1.1. Jacketing

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2. Retrofitting of the Structural System

2.1. Beam Addition Method:

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2.2. Seismic Wall Addition Method:

2.3. Seismic Isolation Method:

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3. Retrofitting of Foundation

3.1. Pile Addition Methods:

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3.2. Ground Improvement Techniques:

4. Retrofitting of Historic Structures

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4.1. Post-Tensioning:

4.2. Epoxy:

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Factors Affecting the Selection of Retrofitting Building Methods

  • Strength of the Existing concrete in the structure.
  • Require proper Access to work locations.
  • The magnitude of strength to be improved.
  • Cost of construction and maintenance.
  • Time management.
  • Clearance issues.
  • The seismic consequence should assume.
  • Environmental circumstances.
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Identify the Structural Damages and Their Retrofitting Process

1. Retrofitting of a Corroded Structural Member

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  • Firstly remove all the weak concrete and get information about all reinforcement. Then remove all rust from steel using rust remover and rust preventers.
  •  If previous steel corroded, then provide anchorage, i.e., Shear connectors. Use tack coat or adhesion coat to bond the old and fresh concrete. Normally,  polymer and epoxy resin-based material is used.
  • One patching method is useful for reforming concrete to the actual surface level. Polymer is a suitable mortar because it is useful with or without accumulating.
  • In cracks,  pores or honeycombing can be filled with cement slurry, polymer-modified slurry, or epoxy. After all, that process uses a proper protective coating.
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2. Retrofitting of Harshly Damaged Concrete:

  • The elementary verifying system should use for the structure. Remove all the weak concrete from the structure. Then wash the surface and remove rust from the corroded steel using rust removers and rust preventers.
  • According to the need, add extra steel around the structure and formwork. Add a polymer-based adhesion coat between aged and new concrete surfaces. For workability, add the admixture in concrete and position it with the actual thickness.
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Advantages of Retrofitting of Building

  1. This method is utilized to prevent displacement from the structure's concrete
  2. To boost protection levels of the structure.
  3. To resist load safely, the Retrofitting of the structure plays an important role in existing or future actions.
  4. The Retrofitted structures do energy-efficient and lower carbon emissions.
  5. It creates the structure stronger and controls
  6. It protects the structure from earthquakes and provides safety to the residents.
  7. Insurance firms help to expand their insurance.
  8. Improving the capability of structure as well as its components.
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Disadvantages of Retrofitting of Building

  1. The talented worker surrenders with the embraced retrofitting methods.
  2. Need permission for the construction site since the building is going through the procedure.
  3. Hard bonding mats are observable between the old masonry and the new concrete surface.
  4. The strength of the concrete is raised than the old masonry structures
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Retrofitting Buildings for Energy Efficiency

Foundation Retrofitting Techniques

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What Is Retrofitting a Foundation?

Insulation Retrofit

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Retrofitting Process

Retrofitting Examples

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Retrofitting Materials

Retrofitting of Building

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Retrofit Construction

Retrofitting Buildings for Energy Efficiency

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Retrofitting Buildings for Sustainability

  1. Real-Time Visibility to Energy Consumption
  2. Water Efficiency
  3. Continuous HVAC Commissioning
  4. Green Roof
  5. Indoor Air Quality
  6. Operations and Maintenance Optimization
  7. Load Curtailment Programs
  8. Space Utilization Management
  9. Virtual Building Automation System (BAS)
  10. Public Visibility and Engagement
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Types of Retrofitting Techniques

  1. Sealing with Epoxies
  2. Stitching
  3. Blanketing
  4. Routing and Sealing
  5. External Stressing
  6. Autogenous Healing
  7. Overlays
  8. Grouting
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