Patent ID: 6510743
Filing Date: 2003-01-28
Classification: B28B,G01N

Abstract:
A reusable apparatus for in situ forming of concrete test specimens, comprising:a flexible, reusable outer container having a closed bottom and an open top with an upper peripheral edge, said outer container adapted for placing in a slab of wet concrete and filling with wet concrete; at least one inner container removably disposed within said outer container and adapted for filling with a representative specimen of said wet concrete; and a lifting assembly for removing said at least one inner container from said outer container, said lifting assembly including a heavy, rigid base plate removably placed within said outer container and beneath said at least one inner container; a hollow pipe having a lower end secured concentrically to said base plate and extending upwardly therefrom; said hollow pipe having an upper end substantially level with said upper peripheral edge of said outer container when said base plate is placed directly upon the bottom of said outer container; a threaded passage disposed in said hollow pipe; and a threaded rod for inserting through said pipe for engaging said threaded passage of said lifting assembly, for lifting said lifting assembly and said at least one inner container from said outer container after the concrete has cured.