Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Patent
1991-07-31
1992-03-31
Kutach, Karen D.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
7386453, 264 31, 264 35, 264264, 264275, 264279, 2642791, 2642979, 264333, 264334, 264335, B28B 114, B28B 712, B28B 1306, E04B 116
Patent
active
051005956
ABSTRACT:
A method for providing a test sample of concrete from a large poured area of concrete includes using a mold suitable for placement within the concrete form, the mold including a continuous sidewall and a bottom wall connected to the sidewall. An insert within the mold is spaced from the bottom wall so that a pressurization chamber is formed between the insert and the bottom wall of the mold. A fluid inlet is formed in the mold in fluid communication with the pressurization chamber and a fluid inlet tube is connected at a first end thereof to the fluid inlet. Preferably, the fluid tube is of a length sufficient to reach the surface of the concrete poured within the form. In one embodiment, a plurality of legs are formed on the insert to maintain the spacing of the insert from the bottom wall of the mold, the legs being separated sufficiently to allow fluid flow between them. In another embodiment, the space between the insert and the bottom of the mold is filled with a noncompressible fluid. The method of producing a test sample from a pour of concrete includes the steps of defining a test sample at the time of pouring the concrete in the mold, maintaining an open space beneath the test sample while the concrete is being poured, and, after the concrete has cured, pressurizing the space sufficiently to force test sample from the pour. The test sample, once it is removed from the concrete pour, can then be taken to a laboratory and tested by conventional means.
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