Journal of South China University of Technology (Natural Science Edition) ›› 2007, Vol. 35 ›› Issue (2): 116-120.

• Materials Science & Technology • Previous Articles     Next Articles

Hydration Characteristics of Cement Kiln Dust as Cementitions Materials

Jin Xue-li1  Zeng Ling-ke1  He Zhen2  Shui An-ze1  Luo Xiang-yu3  Li Ping1   

  1. 1. School of Materials Science and Engineering, South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China;2. School of Water Resource and Hydropower, Wuhan Univ. , Wuhan 430072 , Hubei , China;3. Shenzhen Luojian Concrete Corp. , Shenzhen 518055 , Guangdong , China
  • Received:2006-01-19 Online:2007-02-25 Published:2007-02-25
  • Contact: 金雪莉(1979-)，女，博士生，主要从事无机非金属材料研究. E-mail:jinxl02414@126.com
  • About author:金雪莉(1979-)，女，博士生，主要从事无机非金属材料研究.

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Abstract:

In this paper , cement kiln dust (CKD) , fly ash and slag were mixed with Portland cement to compose a complex system. The hydration characteristics of the system were then investigated using a non-contacting resistivi-ty meter and by means of hydration heat test and SEM. Moreover , the folding resistance and compressive resistance of the mortar were measured. The results show that the water-soluble alkali and sulfate compounds in CKD provide an alkali environment for the activation of the latent activity of fly ash and slag , and help to improve the early-stage strength of the blending system with large doping amount.

Key words: cement kiln dust, fly ash, slag, hydration characteristic