Facades Rehabilitation
Project overview
Client: Qassem 5067 comity
Consultant: Mac builders
Status: Completed on October 2018
Location: Ramlet al Bayda, Beirut
RECAP sarl., as part of the ARKON Network, successfully delivered comprehensive concrete repair and façade rehabilitation works for Qassem Building 5067, a landmark residential structure located in Ramlet Al Bayda.
The project focused on restoring the structural integrity of deteriorated reinforced concrete elements and protecting the building envelope against aggressive environmental exposure.
Scope of Work
The rehabilitation works were executed through a structured repair methodology:
- Installation of external scaffolding with full protection to existing façade elements
- Removal of all deteriorated and delaminated concrete
- Cleaning and treatment of corroded reinforcement, including protective coating
- Application of repair mortars for localized patching
- Use of micro-concrete for large surface restoration areas
- Surface preparation and leveling using polymer-modified materials
- Application of acrylic elastic waterproofing system for full façade protection
Challenge
The rehabilitation of Qassem Building 5067 presented a combination of structural, environmental, and execution challenges, requiring a carefully controlled and technically sound approach.
1. Severe Marine Exposure
The building is located in a coastal zone and was subjected to high chloride contamination, leading to:
- Advanced reinforcement corrosion
- Ongoing electrochemical deterioration
- Accelerated concrete degradation
This required not only repair, but a long-term protection strategy to stop further corrosion.
2. Extensive and Non-Uniform Deterioration
Damage was not localized but spread across all façades with varying severity:
- Deep concrete spalling in some areas
- Surface delamination in others
- Hidden corrosion behind seemingly sound concrete
3. Large Vertical Surface ExecutionWorking on full building elevations introduced operational constraints:
- Installation and management of full height scaffolding systems
- Ensuring safe access and productivity at height
- Maintaining consistent workmanship across large surfaces