Method providing self-dispensing additive from buffer blocks for use with a medium in a bullet trap
First Claim
1. A method of providing an additive in a self-dispensing form for stabilizing a projectile-trapping medium and passivating spent projectiles trapped therein, comprising:
- selecting at least one dry component from the group consisting of low-solubility phosphate compounds, low-solubility aluminum compounds, iron compounds, sulfate compounds, and calcium carbonate;
selecting at least one cementing material;
providing water;
mixing substantially stoichiometric amounts of said dry components,said cementing material, and said water to yield a workable paste;
wherein said mixing substantially stoichiometric amounts of said dry components, said cementing material, and said water comprises mixing about one part by mass said low-solubility phosphate compound, about one part by mass said cementing material, and about 0.4 parts by mass said water;
adding a quantity of an aqueous-based foam to said paste to form a slurry,wherein the quantity of said foam is sufficient to yield a density of said additive sufficiently high to prevent buoyancy of said additive and sufficiently low to prevent said additive from sinking in said projectile-trapping medium;
casting said slurry in at least one mold suitable to establish said form;
at least partially curing said slurry in said mold; and
removing said cured slurry from said mold to yield said self-dispensing form.
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Abstract
A method providing a self-dispensing additive for buffering a projectile trapping medium and passivating spent projectiles trapped therein. The additive is a buffering compound formed as blocks of low-density foamed-concrete that self-dispenses the additive when contacted by the fired projectiles. The blocks contain dry components that may include one or more of low-solubility phosphate compounds, low-solubility aluminum compounds, iron compounds, sulfate compounds, and calcium carbonate mixed with a cementing material, water, and an aqueous-based foam in substantially stoichiometric amounts. The aqueous-based foam is added in a quantity sufficient to adjust the density of the block to neutral buoyancy in the projectile-trapping medium. The additive chemically stabilizes the medium while also passivating projectiles, in particular heavy-metal projectiles, trapped in the medium.
34 Citations
9 Claims
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1. A method of providing an additive in a self-dispensing form for stabilizing a projectile-trapping medium and passivating spent projectiles trapped therein, comprising:
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selecting at least one dry component from the group consisting of low-solubility phosphate compounds, low-solubility aluminum compounds, iron compounds, sulfate compounds, and calcium carbonate; selecting at least one cementing material; providing water; mixing substantially stoichiometric amounts of said dry components, said cementing material, and said water to yield a workable paste; wherein said mixing substantially stoichiometric amounts of said dry components, said cementing material, and said water comprises mixing about one part by mass said low-solubility phosphate compound, about one part by mass said cementing material, and about 0.4 parts by mass said water; adding a quantity of an aqueous-based foam to said paste to form a slurry, wherein the quantity of said foam is sufficient to yield a density of said additive sufficiently high to prevent buoyancy of said additive and sufficiently low to prevent said additive from sinking in said projectile-trapping medium; casting said slurry in at least one mold suitable to establish said form; at least partially curing said slurry in said mold; and removing said cured slurry from said mold to yield said self-dispensing form. - View Dependent Claims (2, 3, 4)
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5. A method of dispensing compounds for stabilizing a projectile-trapping medium and passivating spent projectiles trapped therein, comprising:
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adding to said projectile-trapping medium low-density, self-dispensing, foamed-concrete blocks of buffering compound; and contacting said blocks with fired projectiles; wherein said contacting with fired projectiles at least in part disintegrates said blocks and distributes said buffering compound throughout said medium for intimate contact with said spent projectiles. - View Dependent Claims (6, 7, 8, 9)
wherein said one or more dry components, said cementing material, and said water are provided in substantially stoichiometric amounts.
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Specification