Method of and apparatus for determining cement strength and exte

Details Method of and apparatus for determining cement strength and exte Method of and apparatus for determining cement strength and exte

1987-04-29

1988-09-06

Levy, Stewart J.

Electricity: measuring and testing

Particle precession resonance

73 54, 324318, G01R 3320

Patent

active

047696010

ABSTRACT:
A method and apparatus for determining both the extent of setting of cement and strength of cement as it sets by utilizing a pulsed nuclear magnetic resonance spectrometer, to follow the cementation or hydration reaction of the cement. Cement samples can be agitated to simulate the transport and placing of a cement and/or exposed to temperatures and pressures similar to that of the environment wherein the cement will be placed and set.

REFERENCES:
patent: 3932805 (1976-01-01), Abe et al.
patent: 4321538 (1982-03-01), Abe et al.
L. J. Schreiner et al., "NMR Line Shape . . . Cement Hydration", J. Am. Ceram. Soc., vol. 68, No. 1, 1985.
L. Barbic et al., "The Determination of Surface Development in Cement Pastes by Nuclear Magnetic Resonance", J. Am. Ceram. Soc., vol. 65, No. 1, 1982.
J. R. Barnes et al., "Hydration of Portland Cement . . . NMR Spectroscopy", J. of Materials Science Letters, vol. 4, No. 10, Oct. 1985.

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