A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Resistance to chemical attack of ground brick-PC mortar: Part I. Sodium sulphate solution
The partial replacement of high C3A cement blended with ground brick (GB) is investigated in terms of resistance of GB mortar to sodium sulphate (Na2SO4) solution. The results indicate that the sulphate resistance of mortar is generally increased as the replacement level of cement with GB increases up to at least 30% replacement. However, the GB types investigated exhibit varying resistance to sulphate expansion when used as partial cement replacement and this is attributed to their chemical and phase composition. Sulphate content, glass content, and oxide chemistry are the principal factors that determine the effectiveness of GB in resisting sulphate expansion. Small amounts of sulphate in GB do not have any deleterious effects on GB mortars and can be beneficial. Bricks with high-calcium glass or a low proportion of glassy phase should not be used as pozzolans. Bricks with a high proportion of low-calcium glass make very effective pozzolans.
Resistance to chemical attack of ground brick-PC mortar: Part I. Sodium sulphate solution
The partial replacement of high C3A cement blended with ground brick (GB) is investigated in terms of resistance of GB mortar to sodium sulphate (Na2SO4) solution. The results indicate that the sulphate resistance of mortar is generally increased as the replacement level of cement with GB increases up to at least 30% replacement. However, the GB types investigated exhibit varying resistance to sulphate expansion when used as partial cement replacement and this is attributed to their chemical and phase composition. Sulphate content, glass content, and oxide chemistry are the principal factors that determine the effectiveness of GB in resisting sulphate expansion. Small amounts of sulphate in GB do not have any deleterious effects on GB mortars and can be beneficial. Bricks with high-calcium glass or a low proportion of glassy phase should not be used as pozzolans. Bricks with a high proportion of low-calcium glass make very effective pozzolans.
Resistance to chemical attack of ground brick-PC mortar: Part I. Sodium sulphate solution
O'Farrell, M. (author) / Wild, S. (author) / Sabir, B.B. (author)
Cement and Concrete Research ; 29 ; 1781-1790
1999
10 Seiten, 16 Quellen
Article (Journal)
English
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