Oil well cement slurries II. Adsorption behaviour of dispersants

The adsorption of naphthalene sulfonate formaldehyde condensate (NSFC) on the surface of cement particles has been measured for slurries based on different class G oil-well cements and is correlated to their rheological properties. The influence of the order of addition on the adsorption and the res...

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Veröffentlicht in:	Cement and concrete research 1986-11, Vol.16 (6), p.921-930
Hauptverfasser:	Michaux, M., Oberste-Padtberg, R., Defosse, C.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Buildings. Public works Cement concrete constituents Cements Exact sciences and technology Materials
Online-Zugang:	Volltext
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Zusammenfassung:	The adsorption of naphthalene sulfonate formaldehyde condensate (NSFC) on the surface of cement particles has been measured for slurries based on different class G oil-well cements and is correlated to their rheological properties. The influence of the order of addition on the adsorption and the resulting slurry rheology is shown and discussed. The conditions for the reversibility and irreversibility of NSFC adsorption are discussed. The amount of NSFC adsorbed has been monitored versus time of hydration at 25°C and 85°C. The retarding side effect of this oligomer on the hydration of a cement slurry is described and a mechanism of action proposed.
ISSN:	0008-8846 1873-3948
DOI:	10.1016/0008-8846(86)90016-5