Containment of PFAS
AssigneeKi Strategies Pty Ltd
InventorsAndrew Kita, Grant Scott
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Abstract
The invention provides a method of containing PFAS within a low permeability cementitious product, the method comprising: forming a cementitious slurry, the cementitious slurry comprising: cement; water; aggregate; and allowing the cementitious slurry to cure and thereby form a cementitious product; wherein one or more of the water and the aggregate is contaminated with PFAS; and further wherein the method comprises adding one or more of: siliceous pozzolans; plasticizer(s); and crystalline growth water-proofing compound(s), in an amount sufficient to produce a cementitious product comprising low water permeability, the low water permeability substantially preventing leaching of PFAS.
Claims35
A method of containing PFAS within a low permeability cementitious product, the method comprising:
- forming a cementitious slurry, the cementitious slurry comprising:
- cement;
- water;
- aggregate;
- and
- allowing the cementitious slurry to cure and thereby form a cementitious product;
- wherein one or more of the water and the aggregate is contaminated with PFAS, including short-chain PFAS;
- and
- further wherein the method comprises adding one or more of:
- siliceous pozzolans, plasticizer(s), or crystalline growth water-proofing compound(s), in an amount sufficient to produce a cementitious product comprising a coefficient of permeability of at or below 10−8 m/s, thereby substantially preventing leaching of PFAS, including short-chain PFAS.
Dependencies are inferred from the claim text.