Journal of South China University of Technology (Natural Science Edition) ›› 2007, Vol. 35 ›› Issue (2): 121-124.

• Materials Science & Technology • Previous Articles     Next Articles

Fractal Dimension of Pore Structure of Concrete

Wei Jiang-xiong  Yu Qi-jun  Zeng Xiao-xing  Bai Rui-ying   

  1. School of Materials Science and Engineering , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China
  • Received:2006-05-12 Online:2007-02-25 Published:2007-02-25
  • Contact: 韦江雄(1977-)，男，博士后，主要从事建筑材料的开发与性能表征研究. E-mail:jxwei@scut. edu.cn
  • About author:韦江雄(1977-)，男，博士后，主要从事建筑材料的开发与性能表征研究.
  • Supported by:

    国家自然科学基金资助项目(50602016) ;特种功能材料及其制备教育部重点实验室青年创新基金资助项目(200500A) ;硅酸盐材料工程教育部重点实验室开放
    基金资助项目( SYSJJ2006-07)

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Abstract:

A fractal model is established to simulate the spatial structure of concrete slurry , and a formula that de-scribes the relationship among the fractal dimension D , the porosity P and the pore distribution is deduced. ßased on the proposed formula , a fractal dimension of concrete pore structure in the range of 0 to 3 is obtained , which in-creases with the decrease in porosity and with the widening in pore distribution. Moreover , a Mercury Intrusion Po-rosimeter (MIP) is used to determine the pore structure of ordinary Portland cement and to calculate the corre-sponding fractal dimension. The results indicate that the fractal dimension and the concrete strength are closely in-terrelated.

Key words: concrete, fractal dimension, porosity, pore distribution