Method and apparatus for indicating the air content of concrete

Details Method and apparatus for indicating the air content of concrete Method and apparatus for indicating the air content of concrete

1980-09-29

1982-08-17

Kreitman, Stephen A.

Measuring and testing

Gas content of a liquid or a solid

By vibration

G01N 716

Patent

active

043443168

ABSTRACT:
The apparatus comprises a chamber having an open end and an opposite closeable end, and provided with a heating device and pressure measuring device. The open end of the chamber is inserted into the fresh concrete with opposite end opened. After insertion the chamber is closed and the contents heated under predetermined conditions. The pressure increase is a function of air content of the mixture.

REFERENCES:
patent: 2668437 (1954-02-01), Patch
C. A. Menzel, "Development and Study of Apparatus and Methods for Determination of Air Content of Fresh Concrete", Journal Am. Concrete Institute, vol. 18, No. 9, pp. 1053-1072, May 1947.

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