ADSORPTION OF A CEMENT PLASTICIZER IN CALCIUM CARBONATE

ADSORPTION D'UN FLUIDIFIANT DU CIMENT SUR LE CARBONATE DE CALCIUM

Adsorption isotherms of naphthalene formaldehyde condensate in caco3 dispersions have been determined versus ph, ionic strength and calcium ion concentration. The higher the ph, the lowest the polymer adsorbates. Increase of the ionic strength enhances the adsorption. Macroscopic properties such as stability and rheology have been compared both to the polymer adsorption and to the induced surface charge. A compilation of the results shows how the calcium ions play a major role in the adsorption process. At high ionic strength (greater than 1m per l), the stability modifications are also related to polymer adsorption although electrostatic interactions should not be invoked. (a)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
• Corporate Authors:

  Pergamon Press, Incorporated

  Maxwell House, Fairview Park
  Elmsford, NY  United States  10523
• Authors:
  • -
• Publication Date: 1989-9

Language

• Undetermined

Media Info

• Pagination: p. 692-702
• Serial:
  • Cement and Concrete Research
  • Volume: 19
  • Issue Number: 5
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Adsorption; Calcium; Carbonates; Concentration (Chemistry); Concrete; Ions; pH value; Plasticizers; Rheology; Stability (Mechanics)
• Subject Areas: Materials;

Filing Info

• Accession Number: 00498086
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Sep 30 1990 12:00AM