Pozzolanic activity of mechanochemically and thermally activated kaolins in cement
作者: Alireza SouriHadi Kazemi-KamyabRuben SnellingsRahim NaghizadehFarhad Golestani-FardKaren Scrivener
作者单位: 1Iran University of Science & Technology, School of Metallurgy and Materials Engineering, Narmak, Tehran, Iran
2Laboratory of Construction Materials, Institute of Materials, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Ecublens, Switzerland
刊名: Cement and Concrete Research, 2015, Vol.77 , pp.47-59
来源数据库: Elsevier Journal
DOI: 10.1016/j.cemconres.2015.04.017
关键词: Pozzolan (D)Hydration (A)Metakaolin (D)Mechanochemical activationBlended cement (D)
原始语种摘要: Abstract(#br)This paper reports on the mechanochemical activation by intensive grinding as an alternative way to produce pozzolanically reactive metakaolin. The physicochemical properties, pozzolanic reactivity and impact on cement hydration of mechanochemically and thermally activated kaolinitic clays were compared. Mechanochemical activation of kaolin led to an amorphous hydrous material with increased specific surface area and high water content. Unlike in thermally activated kaolins, the Al coordination environment was partially retained during mechanochemical treatment. At low clinker replacement levels of 10%, the use of mechanochemically activated kaolins accelerated the hydration of the blended cement. The pozzolanic reaction reduced portlandite contents strongly and from early...
全文获取路径: Elsevier  (合作)
影响因子:3.112 (2012)

  • cement 胶结物
  • hydration 水合酌
  • activated 激化了的
  • thermally 热地
  • metakaolin 变高岭石
  • coordination 配位
  • portlandite 氢氧钙石
  • grinding 
  • reaction 反酌
  • amorphous 非晶质的