Abstract A device for obtaining concrete test specimens having the same curing environment as the structural element from which the specimens are taken is disclosed. The device comprises a rigid outer member which is in the shape of a truncated pyramid, cone, etc. In use, the base of the truncated member is placed in a pouring form for the structural element. A cylindrical paper test mold is inserted within a hole in the top of the truncated member. Liquid concrete is poured into the form and the test specimen mold is filled. The concrete is set and cured for a desired time. The truncated member and test specimen are removed from the structural element and the test specimen is subjected to conventional tests after removal from the outer member. The hole left in the structural element is readily patched because of the converging sides thereof.
A device for forming a concrete test specimen having substantially the same curing conditions as the concrete element from which said specimen is obtained and for forming a cavity in said element of a configuration which facilitates patching after the device is removed therefrom, said device including in combination a hollow cylindrical test specimen mold having upper and lower ends and a fixture for supporting said mold; said fixture comprising: a wall portion spaced radially outward from and surrounding the cylindrical outer surface of said test specimen mold, said wall portion converging inwardly from a wide upper fixture end to a narrower lower fixture end; a base plate attached to and partially enclosing the lower end of said fixture and adapted to support the mold; a cover plate for said wide fixture end integrally attached to and extending solely radially inward from the corresponding extremity of said wall portion, said cover plate having an aperture therein concentric with the upper end of said mold, the diameter of the aperture and mold being substantially equal and the aperture adapted to receive and engage the adjacent end of said mold to hold it in a desired position; and means to facilitate removal of said fixture and mold from the cured concrete.
Claim 2
Independent Claim
209 words
A device for forming a concrete test specimen having substantially the same curing conditions as the concrete element from which said specimen is obtained and for forming a cavity in said element of a configuration which facilitates patching after the device is removed therefrom, said device including in combination a hollow cylindrical test specimen mold having upper and lower ends and a fixture for supporting said mold; said fixture comprising: a wall portion spaced radially outward from and surrounding the cylindrical outer surface of said test specimen mold, said wall portion converging inwardly from a wide upper fixture end to a narrower lower fixture end; a base plate attached to and partially enclosing the lower end of said fixture and adapted to support the mold; a cover plate for said wide fixture end integrally attached to and extending solely radially inward from the corresponding extremity of said wall portion, said cover plate having an aperture therein concentric with the upper end of said mold, the diameter of the aperture and mold being substantially equal and the aperture adapted to receive and engage the adjacent end of said mold to hold it in a desired position; and means to facilitate removal of said fixture and mold from the cured concrete.