EFFECTS OF GRINDING AIDS ON ACTIVATION AND FINENES…

Author:FENGChunhua LIDongxu MIAOChen WANGXiaopeng(StateKe… CollegeofMaterialSci… NanjingUniversityofT… Nanjing210009 China)

Unit:

Keyword:steel slag mechanical activation chemical activation activity cementing material

Classification:TF703.6

Year,volume(Issue):page number:2010,38(7):1160-1166

Summary:

The mechanism of mechanical activation and chemical activation of steel slag was discussed.The effects of mechanical activation and chemical activation on the activity of steel slag were investigated.The grinding efficiency of steel slag by using four grinding aids was also analyzed.The internal relation between the microstructure and macroscopic properties of steel slag and cement were investigated by X-ray diffraction,scanning electron microscopy,mercury porosimeter method and other modern analysis techniques.The results show that it is possible to prepare the high-activity supplementary cementing materials using steel slag.The optimum grinding time of steel slag is 60 min.The addition of grinding aids into the grinding of steel slag could increase the product fineness.The cement compressive strength at 28 d could be improved after adding the finer particles of steel slag ground.The best grinding aid was grinding aid A(mixed with triethanolamine,glycol,deionized water,mass ratio is 7:3:10).The ground steel slag as a high-activity supplementary cementing material could be used by the content of 30% in cement.

Foundation item:

国家“973”计划(2009CB623104)资助项目

About The Author:

References:

[1]肖琪仲.钢渣在高温高压下的水热反应[J].硅酸盐学报,1999,27(4):427-435.XIAO Zhongqi.J Chin Ceram Soc(in Chinese),1999,27(4):427-435. [2]余远明,管宗甫,崔书瑾,等.钢渣粉的颗粒粒径分布与水泥强度之间的关系[C]//中国硅酸盐学会水泥分会首届学术年会论文集,河南焦作,2009.YU Yuanming,GUAN Zongfu,CUI Shujing,et al.Relationship be-tween the particle size distribution of steel-making slag and strength ofrelevant cement[C]//The Papers Of The First Cement Branch Meeting of The Chinese Ceramic Society,Jiaozuo City of Henan Province,China,2009. [3]陈益民,张洪滔.磨细钢渣粉作水泥高活性混合材料的研究[J].水泥,2001,28(05):1-4.CHEN Yimin,ZHANG Hongtao.Cement(in Chinese),2001,28(5):1-4. [4]MOTZ H.GEISELER J.Products of steel slags an opportunity to save natural resources[J].Waste Manage Res,2001,21(3):285-293. [5]王玉平,张天石,童光庆.复合助磨剂试验研究[J].水泥,2002(8):8-10.WANG Yuping,ZHANG Tianshi,TONG Guangqing.Cement(in Chi-nese),2002(8):8-10. [6]蔡安兰,江朝华,严生,等.助磨剂对普通硅酸盐水泥性能的影响及作用机理[J].南京化工大学学报,2001,23(1):50-53.CAI Anlan,JIANG Chaohua,YAN Sheng,et al.J Nanjing Univ(in Chinese),2001,23(1):50-53. [7]JANKOVIC A,VALERY W,DAVIS E.Cement grinding optimization[J].Miner Eng,2004,17(11/12):1075-1081. [8]ASSAAD J J,ASSEILY S E,HARB J.Effect of specific energy con-sumption on fineness of Portland cement incorporating amine or gly-col-based grinding adis[J].Mater Struct,2009,42(8):1077-1087. [9]XIAO Zhongming,WANG Xin.New method of studying the relation-ship between particle composition and performance and discuss he op-timal cement powder composing[J].Cement,2000(4):8-11. [10]CELIK I B.The effects of particle size distribution and surface area upon cement strength development[J].Powder Technol,2009,188(3):272-276.

Service and feedback:

【Article download】【Add to Wishlist】