Effects of Calcined Diatomite on Resistance to Permeability and Freeze-Thaw of Recycled Aggregate Concrete (RAC)

Abstract:

The sustainable development of human society makes necessary the research on and the use of RAC. For the purpose of enlarging its application range, both lowering cost and enhancing properties of RCA are worth being done. This paper aims at improving RAC’s resistance to permeability and freeze-thaw with a lower addition amount of calcined diatomite compared with silicon fume. Therefore, the main study on effects of calcined diatomite on resistance to permeability and freeze-thaw is carried out through comparison experiments. Research results indicate that the calcined diatomite of 2% added is able to decrease relative penetration coefficient by 59%, the strength loss by 4.9% and the relative strength loss by 3.3%. Obviously, the lower addition of calcined diatomite could achieve good effects, which arrived at the goal of this paper.

• Periodical: Applied Mechanics and Materials (Volumes 121-126)
• Pages: 2690-2694
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.121-126.2690
• Online since: October 2011
• Authors: Yong Qi Wei, Yun Fang Meng, Qing He Sun
• Keywords: Calcined Diatomite, Freeze-Thaw Resistance, RAC, Resistance to Permeability

References

[1] T. Du, H.Q. Li: Concrete. Vol. 4 (2002), p.49.

[2] J.P. Hou, Y.P. Song and W. Shi: Low Temperature Architecture Technology. Vol. 2(2001), p.9.

[3] X.H. Ye: West-China Exploration Engineering. Vol. 1(2006), p.223.

[4] A. Gokce, S. Nagatakib, T. Saekic et al: Cement and Concrete Research. Vol. 34(2004), p.799.

[5] R. Zaharieva, F. Buyle-Bodin, et al: Cement and Concrete Research. Vol. 34(2004), p. (1927).

[6] Y.H. Tan, S.C. Deng, X.B. Zhang, et al: Concrete. Vol. 12 (2005), p.49.

[7] S.C. Kou, C.S. Poon: Cement & Concrete Composites. Vol. 31(2009), p.622.

[8] W. Zhao: Testing Research on Green High Strength and High Performance Concrete Made with Recycled Concrete Aggregate (Wuhan University, Wuhan 2004).

[9] C. Limbachiya, T. Leelawat and R. K. Dhir: Materials and Structures. Vol. 11 (2000), p.574.

[10] A.J. Chen, J. Wang, Q. Zhang: New Building Materials. Vol. 2(2009), p.20.

[11] G. Yu, Y.F. Bao: Building Material Industry Information. Vol. 9(2004), p.30.

[12] U. Rattanasak and K. Kendall: Cement and Concrete Research. Vol. 35(2005), p.637.

[13] W. Yao: Green Concrete (Tongji University press, Shanghai 2006).

[14] P.K. Mehta and P.J. Moneteria: Concrete: Microstructure, Properties and Materials (3rd ed. McGraw-Hill, New York 2005).

[15] T.J. Zhao: Permeability of concrete (Science press, . Beijing 2006).