Contents
GSPC LNG Terminal Background:
The GSPC LNG Terminal, situated in Gujarat, embarked on a project of substantial magnitude to meet the rising demand for LNG.
The terminal’s construction team faced a critical issue concerning the waterproofing of concrete structures.
Facing waterproofing challenges, the construction team at GSPC LNG sought effective solutions to ensure the integrity of their concrete structures.
Challenges:
The construction team at GSPC LNG confronted three significant challenges.
Firstly, the terminal’s proximity to water bodies posed a risk of water quickly accessing the concrete tanks.
Secondly, the potential exposure to extremely low temperatures during emergency LNG dumps demanded a repair solution with exceptional thermal compatibility.
Lastly, the requirement for specialized insulated panels added complexity, necessitating a repair solution that would be fine with the panel installation.
Sunanda Global’s Solution for the GSPC LNG Terminal Project:
After meticulous evaluation, the construction team opted for Sunanda Global’s polyurethane base primer and liquid-applied polyurethane waterproofing and sealing membrane.
These products promised to address the three core challenges seamlessly.
Polyurethane Base Primer Application:
Sunanda Global’s polyurethane base primer proved instrumental in preparing the substrate for the subsequent waterproofing application.
The project contractors applied the primer on a dry substrate, ensuring a moisture content of less than 4%, as confirmed by a moisture meter.
Its rapid application, UV resistance, and seamless, watertight finish made it an ideal choice for various zones within the LNG terminal.
Liquid Applied Polyurethane Waterproofing and Sealing Membrane Application:
The second component of Sunanda Global’s solution was the liquid-applied polyurethane waterproofing and sealing membrane.
This membrane, applied after priming with the polyurethane base, demonstrated versatility in waterproofing various surfaces, from RCC roofs, podiums, and water storage tanks.
Surface Preparation and Priming Process:
To ensure optimal adhesion, the construction team followed meticulous surface preparation steps.
They removed any loose material, grease, and oil through grit blasting or mechanical methods.
They cleaned the concrete surface and eliminated the laitance. Additionally, they made the steel surfaces rust-free through shot-blasting.
The application of Sunanda Global’s polyurethane base primer followed these preparations, providing a uniform and adhesive surface for the subsequent waterproofing membrane.
Coating Application Process:
The team directly applied polyurethane waterproofing and sealing membrane to the primed concrete surface.
They allowed the first coat, applied at a recommended rate of 1 kg/sq m, to cure until tack-free, typically overnight, and applied the second coat at 0.5 kg/sq m at right angles to the first, enhancing the membrane’s effectiveness.
They sprinkled the sand over the second coat while slightly tacky to provide a rough surface for better adhesion of the protective screed.
Benefits and Results for the GSPC LNG Terminal Project:
Sunanda Global’s polyurethane base primer and liquid-applied polyurethane waterproofing and sealing membrane successfully addressed the challenges faced by GSPC LNG Terminal.
The project team adequately prepared the substrate for the subsequent application of the waterproofing membrane due to the seamless, watertight finish of the polyurethane base primer.
With its rubber-like finish, excellent flexibility, and chemical resistance, the membrane provided a robust solution for the varied surfaces within the LNG terminal.
Conclusion:
Sunanda Global‘s advanced polyurethane solutions played a pivotal role in simplifying the challenging industrial repair faced by GSPC LNG Terminal in Gujarat.
The seamless integration of the polyurethane base primer and liquid-applied waterproofing and sealing membrane not only addressed the specific challenges but also ensured a reliable, long-lasting solution.
Sunanda Global’s commitment to providing innovative and effective solutions has once again proven instrumental in the success of a critical infrastructure project.
