Vol.3, No 1, 2005 pp. 117 - 125
UDC 666.943.2
INFLUENCE OF THE FLY ASH CHEMICAL
COMPOSITION
ON THE
PORTLAND CEMENT AND FLY ASH MIXTURE HYDRATION MECHANISM
Ljubica Ćojbašić1, Gordana
Stefanović1,
Živko Sekulić2, Snežana Heckmann3
1Faculty of Mechanical Engineering,
Aleksandra Medvedeva 14, 18 000 Niš, Serbia and Montenegro
E-mail: goca@masfak.ni.ac.yu
2Institute for Nuclear technology and
Other Raw Materials,
Franshe d' Epere 86, 11 000 Belgrade, Serbia and Montenegro
E-mail: z.sekulic@itnms.ac.yu
3AURAPLAN, Germany
Abstract. Knowledge of the Portland cement and fly ash mixture
hydration
mechanisms is of high importance in the practical usage of fly ash in
cement
mixtures. The quantity of CaO in the fly ash can determine the course
of
hydration and influence the strength of cement pastes.
In this paper the results of the testing of the influence of fly ash
composition on the strength of cement mixtures with special emphasis on
the content of CaO in the ash have been presented.
Key Words: Fly Ash, Cement Mixture, Compressive Strength, Fly
Ash Content, CaO Content.
UTICAJ HEMIJSKOG SASTAVA LETEĆEG
PEPELA
NA MEHANIZAM
HIDRATACIJE SMEŠE PORTLAND CEMENTA I LETEĆEG PEPELA (PC+LP)
Poznavanje mehanizama hidratacije smeše Portland cementa i letećeg
pepela
je od velikog značaja za praktično korišćenje letećeg pepela u
cementnim
mešavinama. Količina CaO u letećem pepelu može odrediti tok hidratacije
i uticati na čvrstoću cementnih pasti.
U ovom radu su prikazani rezultati ispitivanja uticaja hemijskog
sasatava
letećeg pepela na čvrstoću cementnih mešavina sa posebnim osvrtom na
sadržaj
CaO u pepelu.
Ključne reči: Leteći pepeo, cementna smeša, čvrstoća na
pritisak,
sadržaj letećeg pepela, sadržaj CaO
