Installation of an Insulating Polymer Concrete Overlay for Dike Insulation at Long Island Lighting Company's LNG Storage Facility

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Title: Installation of an Insulating Polymer Concrete Overlay for Dike Insulation at Long Island Lighting Company's LNG Storage Facility

Author(s): Jack J. Fontana and Peter Mendis

Publication: Special Publication

Volume: 116

Issue:

Appears on pages(s): 145-156

Keywords: compressive strength; installing; insulating concretes; liquefied gases; polymer concrete; skid resistance; storage tanks; thermal conductivity; Construction

Date: 8/1/1989

Abstract:
Liquified natural gas (LNG) is usually stored in large tanks surrounded by impounding dikes. If an accidental spill occurs, the LNG boils off and the vapors form a hazardous, explosive mixture with the atmosphere. The rate of evaporation of the LNG depends on the rate of heat transfer from the dike surface to the liquid gas. If the rate of heat transfer is reduced, the rate of evaporation of the LNG and the creation of hazardous conditions are also reduced. Reduction in heat transfer can be achieved by installing and insulating polymer concrete (IPC) overlay on the surface of the containing dikes. The IPC described in this paper was installed on approximately 56,000 ftý of the floor and 18,000 ftý of the sloped wall areas of the dike. It was based on a special moisture insensitive epoxy polymer concrete binder mixed with multicellular glass beads and ceramic-like shell fines to obtain insulating properties. A flame retardant agent was also added to improve fire resistance. The IPC was mixed in a continuous polymer concrete mixer and spread by vibrating screed. The different application techniques are described.