Modification of fluorgypsum as cement retarder

Article

Abstract

The chemical composition and mineral structure of fluorgypsum as well as its harm to application in cement were elaborately analyzed. The primary fluorgypsum was modified and its applications in cement’s production were studied. The technological flow chart of preparing modified fluorgypsum was given. Experimental results indicate that hydration ratio the modified fluorgypsum through adding compound additive for 14d is about 70%. The modified fluorgypsum as cement retarder has certain stimulation to fly ash and increases the strength of compound cement. In addition, its adding amount is lower than that of natural gypsum. The modified fluorgypsum is a good substitute for natural gypsum.

Key words

fluorgypsum industry waste modification cement retarder 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    Xu Qing. Comprehensive Utilization Discussion on Fluorine Gypsum of Fluorid Salt Factory[J]. Light Metal, 2000, (10):12–15Google Scholar
  2. [2]
    Zhu Xiaoli, Yang Xiaowen. Experiment on Using Fluorine Gypsum as Retarder Instead of Natural Gypsum[J]. Journal of Tangshan Polytechnic College, 1999, (4): 29–31Google Scholar
  3. [3]
    Tian Jing-cheng. Study on Comprehensive Utilization of Fluorgypsum[J]. Journal of XuZhou Engineering College, 2005, (1):104–107Google Scholar
  4. [4]
    Yan Peiyu, You Yi. Hydraulic Properties of the Binder Consisting of Fluorgypsum and Fly Ash under Different Curing Conditions[J]. Journal of the Chinese Ceramic Society, 1998, 26(06):689–694Google Scholar
  5. [5]
    Xu Hongsheng. Effects of Composite Additives on the Strength and Scumming of Fluor-gypsum Products[J]. Walling Material Innovation and Energy Conservation of Buildings, 2005, (11):32–35Google Scholar
  6. [6]
    Yang Xinya, Wang Jinhua. Recycling Modification Method of Fluorin Gypsum[P]. CN Patent, ZL 200410013136.2, 2006Google Scholar
  7. [7]
    Chen Yan, Yue Wenhai, Dong Ruolan. Gypsum Building Material[M]. Beijing: China Building Material Industry Publishing, 2002:192Google Scholar

Copyright information

© Wuhan University of Technology and Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  1. 1.School of Materials Science and EngineeringWuhan University of TechnologyWuhanChina
  2. 2.Center of Material Research and AnalysisWuhan University of TechnologyWuhanChina

Personalised recommendations