Application Of Slag Powder In Ready-mixed Concrete

The application of slag in cement production has a history of more than100years,traditional grinding process of clinker grinding, mixing slag gypsum slag grinding theeasy because of poor, potential sexual activity difficult to play out, restricted its use inthe building materials product and application effect. Foreign you will since1950GGBS successfully applied in cement and concrete, our Shanghai also has somesuccessful examples, this paper mainly studies the slag grinding jigang GGBS used incement production after how to achieve the best effect.This paper summarized graining blast furnace slag cement mixed materials assome of the performance characteristics, describes the ultrafine powder in slag cementand concrete, this paper introduces the application of cement industry today in slagsuper fine powder research development and application conditions, and preparationslag super fine powder production technology.Researches on the mountain, the aluminum slag cement factory made use ofdifferent specific surface area on superfine powder some performance. Differentspecific surface area of slag super fine powder with different proportion, and mountaincement clinker powders mixed with aluminum into cement of cement slurry afterconsistence, cement net plasma strength and cement concrete performance influenceand variation. Test results showed that the slag super fine powder, the more surface ofcement than net plasma liquidity and the strength of the cement body more influential.When slag super fine powder400m2/kg than surface area reached, the average sizedecreased significantly, the average particle size smaller slag particles by cement thatmostly involved in the hydration reaction of cement slurry, liquidity and net cementintensity have been significantly improved.When slag powder by the specific surface area to300m2/kg400m2/kg, strength,more than600m2/kg maximum growth rate of/kg slag super fine powder on thestrength of the cement test blocks, and gradually becomes growth of cement mixedwith slag powder than ordinary cement body diameter, pore distribution morereasonable and close-grained, pore structure more optimization, will have mixed withGGBS made of cement concrete and ordinary concrete, post strength growth ratecompared with high, structure close-grained, showed excellent performance. Finally,the adding of GGBS effect mechanism of the preliminary discussion.