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A new instrument for measuring thixotropy

An instrument was developed to measure thixotropic set of portland cements. Cement-benzene slurries were tested in two conditions: (1) under optimum thixotropic set obtained by gentle compaction of the rheopectic slurry around the rotor of the instrument, and (2) under minimum thixotropic set obtain...

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Bibliographic Details
Published in:Cement and concrete research 1973, Vol.3 (3), p.315-323
Main Author: Kalousek, George L.
Format: Article
Language:English
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Summary:An instrument was developed to measure thixotropic set of portland cements. Cement-benzene slurries were tested in two conditions: (1) under optimum thixotropic set obtained by gentle compaction of the rheopectic slurry around the rotor of the instrument, and (2) under minimum thixotropic set obtained by selected values for: (1) total load to shear the set slurry at provide values for: (1) total load to shear the slurry at optimum thixotropic set, and (2) the load to initiate flow under condition of minimum thixotropic set. The instrument appears suitable for studying thixotropic set of various finely around solids suspended with and without surface active agents in liquids perferably nonpolar and nonreactive with the solid. Un instrument a été conçu afin de mesurer la thixotropie des ciments portland. Des coulis de ciment-benzène ont été testés en deux états: (1) pendant la thixotropie optimale obtenue par la compaction légère du coulis rhéopectique autour du rotor de l'instrument, et (2) pendant la thixotropie minimale obtenue par une vibration choisie du coulis autour du rotor. Les résultats fournissent des valeurs de (1) charge totale afin de cisailler le coulis bien pris à une thixotropie optimale, et (2) la charge afin de commencer l'écoulement dans l'état de thixotropie minimale. L'instrument semble être approprié à l'étude de la thixotropie de divers solides finement moulus en suspension dans les liquides de préférence non polaires et non réactifs avec le solide.
ISSN:0008-8846
1873-3948
DOI:10.1016/0008-8846(73)90033-1