초록 ▼

A method is disclosed for constructing, verifying, and maintaining underground vaults that isolate and contain radioactive burial sites. The method employs a buoyant lift technique to isolate a block of soil containing the contaminates from the surrounding soil. An impermeable synthetic liner is emb

A method is disclosed for constructing, verifying, and maintaining underground vaults that isolate and contain radioactive burial sites. The method employs a buoyant lift technique to isolate a block of soil containing the contaminates from the surrounding soil. An impermeable synthetic liner is embedded in the vault to enhance the integrity of the system. The integrity of the vault is monitored by a system of sensors placed both inside and outside of the sealed vault. The method eliminates the need to excavate or drill in the contaminated areas.

대표청구항 ▼

[ What is claimed is:] [1.]1. A fluid grout for constructing subterranean barriers under a severed block of the earth which is of sufficient density that the severed block is buoyant in the grout, said grout comprising water, a type K cement, a high density additive in a quantity sufficient to achie

[ What is claimed is:] [1.]1. A fluid grout for constructing subterranean barriers under a severed block of the earth which is of sufficient density that the severed block is buoyant in the grout, said grout comprising water, a type K cement, a high density additive in a quantity sufficient to achieve a density of from 20 to 30 pounds per gallon, a viscosity reducing admixture, and a set retarding admixture in a quantity sufficient to delay hardening for an extended period of from 6 to 60 days.