Subheading: A Case Study on Strengthening Structural Integrity
In today’s construction landscape, the fortification of concrete structures using innovative materials has become paramount. This case study delves into the use of cutting-edge protective measures in reinforcing the infrastructure, focusing on the integration of carbon fiber wrapping and Sinicon PP heat and fire-resistant plaster.
Structural Analysis and Remedial Action:
An exhaustive examination unveiled issues related to corrosion and inadequate strength. To address this, a solution involving carbon fiber and glass fiber wrapping, complemented by Sinicon PP plaster, was proposed. The Sinicon PP plaster, known for its high heat and fire resistance, was critical in ensuring the structural fortification remained protected from the extreme temperatures within the melting shop.
Objective:
The primary aim of the project was to enhance the load-bearing capacity of reinforced concrete crane columns located in the Melting Shop of a foundry industry. These columns, designed for a 20 MT capacity, were identified as structurally deficient, necessitating reinforcing and protective measures.
Methodologies Employed
Reconstruction Phase:
The process commenced with the removal of the existing concrete cover on the columns. Subsequently, cleaning and reinforcement installation, with self-sacrificial anode Galvashield XP, were executed to ensure enhanced durability.
Alternatively heat resistant plaster is used in fire proofing due to the nature of the material itself, as when the plaster is exposed to flame or heat water vapour is released from it and it can slow a fire down by up to two hours although the time is dependent on the thickness of the plaster itself. Heat resistant plaster has to be used with extreme caution as the exothermic reaction is extremely hot, if you were to place your hands into a bucketfull of water and plaster then your hands may suffer from severe burns unless they are very well protected. It is advised that when using plaster, you use only thin strips and allow time for the strips to cool between each application. The reaction gives the plaster its strength during a fire but it also makes heatresistant plaster extremely dangerous to use without proper precautions being taken.
Restoration Measures:
The team applied a polymer-modified mortar and micro-concrete jacketing, with waterproof formworks, to reinstate the required thickness.
Wrapping and Protection:
Glass fiber and Carbon Fiber wrapping, reinforced with epoxy resin, were utilized. The Sinicon PP plaster, derived from a patented process using unique volcanic glass, was then applied to protect the columns from fire and heat.
Performance Analysis:
The field application of Sinicon PP plaster proved successful, showcasing its robust properties, including high heat resistance, comparability to standard plasters, and a strong bond with the wrapped surfaces. The unique composition and easy application of Sinicon PP ensured its seamless integration into the project, eliminating common handling issues and demonstrating high bonding strength with CFRP/GFRP surfaces.
CASE STUDY-STRUCTURAL STRENGTHENING USING CARBON FIBER WRAPPING AND PROTECTION
Final Note:
The integration of advanced protective measures like Sinicon PP plaster marks a step forward in safeguarding and strengthening concrete structures, ensuring enhanced durability and resilience against potential threats.
Conclusion
This case study establishes the effectiveness and suitability of the Sinicon PP plaster as a robust protective measure in fortifying reinforced concrete structures. Its remarkable resistance to extreme heat and fire hazards, along with its ease of application and robust bonding characteristics, underscores its potential as an essential protective component for infrastructure fortification.
