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Aspects of the sulfate resistance of steelwork slag cements
AbstractCement mixes were prepared by intergrinding portland cement clinker (PC), granulated blast furnace slag (BF) and two LD slags (LDI, LDII) in varying proportions. On water-cured cement mortar and paste specimens the compressive strength, pore size distribution and Ca(OH)2 content were determined. Corresponding specimens were exposed to sulfate attack (CaSO4, MgSO4, Na2SO4) and the expansion and the variation of compressive strength were monitored.The results show all BF-LD-PC and BF-LD cements to be “sulfate” resistant which correlates well with their decreased capillary pore volume and low Ca(OH)2 contents. Xray analysis of SO4-bearing phases indicate no clear correlation between ettringite contents and observed degree of sulfate corrosion. Besides, the chemical/mineralogical composition of the LD slags exerts a distinct influence on their hydraulic properties.
Aspects of the sulfate resistance of steelwork slag cements
AbstractCement mixes were prepared by intergrinding portland cement clinker (PC), granulated blast furnace slag (BF) and two LD slags (LDI, LDII) in varying proportions. On water-cured cement mortar and paste specimens the compressive strength, pore size distribution and Ca(OH)2 content were determined. Corresponding specimens were exposed to sulfate attack (CaSO4, MgSO4, Na2SO4) and the expansion and the variation of compressive strength were monitored.The results show all BF-LD-PC and BF-LD cements to be “sulfate” resistant which correlates well with their decreased capillary pore volume and low Ca(OH)2 contents. Xray analysis of SO4-bearing phases indicate no clear correlation between ettringite contents and observed degree of sulfate corrosion. Besides, the chemical/mineralogical composition of the LD slags exerts a distinct influence on their hydraulic properties.
Aspects of the sulfate resistance of steelwork slag cements
Duda, Antje (author)
Cement and Concrete Research ; 17 ; 373-384
1986-12-12
12 pages
Article (Journal)
Electronic Resource
English
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