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Porous and adsorption properties of hydrated cement paste

Hemijska Industrija. 2004;58(1):6-9 DOI 10.2298/HEMIND0401006M

 

Journal Homepage

Journal Title: Hemijska Industrija

ISSN: 0367-598X (Print); 2217-7426 (Online)

Publisher: Association of Chemical Engineers of Serbia

LCC Subject Category: Technology: Chemical technology

Country of publisher: Serbia

Language of fulltext: Serbian, English

Full-text formats available: PDF

 

AUTHORS


Marina Biljana S.

Brezovska Snežana S.

Burevski Dončo K.

Panova Biljana I.

EDITORIAL INFORMATION

Peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 30 weeks

 

Abstract | Full Text

Adsorption isotherms of benzene on hydrated cement pastes prepared by cement ground with and without the addition of grinding aids, triethanol amine (TEA) and ethylene glycol (EG) were investigated. The adsorption isotherms were interpreted by means of the Dubinin-Astakhov (DA) and Dubinin-Radushkevich-Stoeckli (DRS) equations. The microporous structure of cement gel (C-S-H) in the cement pastes, and changes in the Gibbs free energy of adsorption were determined. The mechanical properties of the cement pastes were also measured. It was evident that pastes with additives had different parameters of the DRS and DA equations: the volume and dimensions of the gel pores, the distribution of the dimensions, the characteristic energy of adsorption, and the change in the Gibbs free energy of adsorption. The mechanical properties were also different. The dispersity of the additive-containing ground cements had a favorable effect on the hydration processes. When applying TEA, it was also necessary to analyze its influence on the chemical behavior of hydration in the starting period.