Metal-based membranes for vapor intrusion mitigation
AssigneeRegenesis Bioremediation Products
InventorsKristen A. Thoreson, Hieu Nguyen, Scott B. Wilson
Life of this patent
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Abstract
Barriers for improved vapor mitigation are contemplated, such barriers being formed as a cured latex-asphalt mixture applied to the metal surface of a metallized substrate. The latex-asphalt mixture, prior to curing, comprises an emulsion of an asphalt component, a latex component, and water. Such barriers may be seen to substantially mitigate diffusion of chemical contaminants across the barriers in the form of gas or liquids. Also contemplated are methods for forming such barriers, whether fabricated off-site for installation on site, fabricated in-situ.
Claims13
A method for forming a barrier in situ at a site of contamination for mitigating diffusion of volatile contaminates from a volatile contaminant source, the method comprising the steps of:
- providing a metallized substrate in the path of diffusion of the volatile contaminant source, the metallized substrate having a surface facing towards the volatile contaminant source and a surface facing away from the volatile contaminant source, the metallized substrate comprising a metal layer bonded to a nonmetal layer and a reinforcing material at least partially embedded within the metal layer of the metallized substrate;
- applying a latex-asphalt composition to the surface of the metallized substrate facing away from the volatile contaminant source, the latex-asphalt composition comprising an asphalt component, a latex component, and water;
- and
- allowing the latex-asphalt composition to cure.
A method for forming a barrier for subsequent placement at a site of contamination for mitigating diffusion of volatile contaminates from a volatile contaminant source, the method comprising the steps of:
- bonding a metal layer to a non-metal layer to form a metallized substrate, the metallized substrate having a surface for placement facing towards the volatile contaminant source and a surface for placement facing away from the volatile contaminant source, the metallized substrate comprising a reinforcing material at least partially embedded within the metal layer of the metallized substrate;
- applying a latex-asphalt composition to the surface of the metallized substrate for placement facing away from the volatile contaminant source, the latex-asphalt composition comprising an asphalt component, a latex component, and water;
- and
- allowing the latex-asphalt composition to cure.
Dependencies are inferred from the claim text.