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Comparison of intergrinding and separate grinding for the production of natural pozzolan and GBFS-incorporated blended cements
A portland cement clinker, a natural pozzolan, and a granulated blast furnace slag (GBFS) were used to obtain blended cements that contain 25% mineral additives. The natural pozzolan, which was softer, was more grindable and granulated blast furnace slag, which was harder, was less grindable than the clinker. Two of the cements produced were obtained by intergrinding and the other two were obtained by separate grinding and then blending. All of the blended cements and the control cement without any additive had the same fineness as 3500+/-100 cm2/g Blaine fineness. During grinding, energy consumption of the mill was recorded and a sample corresponding to each energy level as taken from the mill at regular intervals and particle size distribution was determined. Cements produced were compared for change in particle size distribution during grinding and 1-, 2-, 7-, 28-, and 90-day compressive strengths points of view. Also, interactions between clinker and mineral additive portions of blended cements during intergrinding is highlighted.
Comparison of intergrinding and separate grinding for the production of natural pozzolan and GBFS-incorporated blended cements
A portland cement clinker, a natural pozzolan, and a granulated blast furnace slag (GBFS) were used to obtain blended cements that contain 25% mineral additives. The natural pozzolan, which was softer, was more grindable and granulated blast furnace slag, which was harder, was less grindable than the clinker. Two of the cements produced were obtained by intergrinding and the other two were obtained by separate grinding and then blending. All of the blended cements and the control cement without any additive had the same fineness as 3500+/-100 cm2/g Blaine fineness. During grinding, energy consumption of the mill was recorded and a sample corresponding to each energy level as taken from the mill at regular intervals and particle size distribution was determined. Cements produced were compared for change in particle size distribution during grinding and 1-, 2-, 7-, 28-, and 90-day compressive strengths points of view. Also, interactions between clinker and mineral additive portions of blended cements during intergrinding is highlighted.
Comparison of intergrinding and separate grinding for the production of natural pozzolan and GBFS-incorporated blended cements
Erdogdu, K. (author) / Tokyay, M. (author) / Turker, P. (author)
Cement and Concrete Research ; 29 ; 743-746
1999
4 Seiten, 6 Quellen
Article (Journal)
English
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