Peculiarities of hydration of cement paste with addition of hydrosodalite

• Autorzy: Skripkiunas G. , Sasnauskas V. , Daukšys M. , Palubinskaite D.
• Języki publikacji: EN

Abstrakty

EN

A synthetic zeolite - hydrosodalite was used as a hydraulic additive for hardened cement paste, and the influence of this additive on the hydration and other properties of the system was determined. Hydraulic activity of zeolite has been examined, X-ray diffraction, DTA and IR analysis of the hardened cement paste with zeolite additive have been carried out. The results have shown that the additive has a high hydraulic activity (the content of bound CaO - 370 mg/g). The addition of hydrosodalite reduces the content of Ca(OH)2 in hardened cement paste which transforms into calcium zeolite - gismundite. The density of the hardened cement paste with the addition of hydrosodalite after 3, 7 and 28 days of curing decreases by about 11%. This predetermines a decrease in the compressive strength of the hardened cement paste. The compressive strength after 3 days of curing decreases by about 70%, after 7 days of curing - by 66%, and after 28 days of curing - by about 65%.

Słowa kluczowe

EN

hydrosodalite; hydraulic activity; hardened cement paste

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2007
• Tom: Vol. 25, No. 3
• Strony: 627--635
• Opis fizyczny: Bibliogr. 11 poz.

Twórcy

autor

Skripkiunas G.

autor

Sasnauskas V.

autor

Daukšys M.

autor

Palubinskaite D.

• Department of Building Materials, Kaunas University of Technology, Studentu g. 48, LT-51367 Kaunas, Lithuania

Bibliografia

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