Application of Fractal Theory on the Cement Stabilized Recycled Course Aggregate Base Material

Abstract:

This paper studied different size-distribution of recycled coarse aggregates by fractal theory. Cement Stabilized Recycled Aggregate Mixture were prepared by different fractal rate aggregate gradations and the unconfined compressive strength at 7 d and 28 d of the materials were tested. The results showed that the unconfined compressive strength at 7 d and 28 d of the materials with recycled coarse aggregate were higher than the one with natural aggregate when coarse aggregate gradations were same. The higher source rock strength of recycled coarse aggregate was, the larger base material strength was. Generally, the increase of fractal dimension is conducive to the growth of strength. The base materials performances of the same fractal dimension were different when the max particle size was different. So the fractal dimension of recycled coarse aggregate must be determined by maximum particle size.

• Periodical: Advanced Materials Research (Volumes 639-640)
• Pages: 389-393
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.639-640.389
• Online since: January 2013
• Authors: Jian Yin, Yi Chi, Wei Min Song
• Keywords: Cement Stabilized Recycled Aggregate Mixture, Fractal Dimension (D), Recycled Coarse Aggregate, Size-Distribution, Unconfined Compressive Strength (UCS)

References

[1] Liu G.H., Chen B. and Cao X.Y. .,A Summary of coarse aggregate characters quantitative assessment and its influence to HPC performance [J]. Zhejiang Hydrotechnics, 2003，(6)：1~3.

[2] Wang Y.L., Guan X.M. and Pan Q.D. and Liao J.G., Influence of grain gradation of coarse aggregates on concrete strength [J]. Journal of Jiaozuo Institute of Technology, 2004，23(3): 213~215 .

[3] Xu D.H., Feng W.Y., Practical Guide for Concrete Materials. Beijin. China Building Materials Industry Press, 2005.

[4] Li G.Q., Deng X.J.. On fractal gradation of aggregates [J]. Journal OF Chongqin J iaotong Institute, 1995, 14(2): 38-43.

[5] Xia C., Liu H.W.. Research on Fractal Characteristics of the Size-Distribution of Concrete Aggregates [J]. Journal OF Southwest Jiaotong University, 2002, 37(25): 186-189.

[6] Wang Q.Y., Hu J.S.. Gradings of the concrete aggregates and fractals [J]. Rock and Soil Mechanics, 1997, 18 (3): 93-99.