Method and a device for measuring concrete maturity

Details Method and a device for measuring concrete maturity Method and a device for measuring concrete maturity

1982-08-24

1984-11-06

Frankfort, Charles

Thermal measuring and testing

Thermal testing of a nonthermal quantity

Of cure or hardenability

374 54, 73 613, 73 73, G01N 2500

Patent

active

044809298

ABSTRACT:
A method and a device for measuring the maturity of concrete, in which the heat generated by the setting of the concrete causes a special liquid to evaporate and the amount of evaporated liquid is taken as a measure of the concrete maturity. The liquid is contained in a closed capillary tube placed on a scale. For measuring purposes the capillary tube is broken at a well-defined point, and capillary and scale are then placed in a casing containing an absorbing agent for the evaporated liquid. The casing is hermetically sealed and pressed into the concrete. For reading purposes the casing is opened and the scale with the capillary is removed to determine the level of the liquid column and thus the maturity of the concrete.

REFERENCES:
Hansen, Anker Jon, "COMA-Meter-The Mini Maturity Meter", Sartryck ur Nordisk Betong, 4:81.
Catalog M-82 of Germann Petersen Manufacturing ApS.

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