Main Article Content
Abstract
With the continuous expansion of city rail transit construction, the amount of shield residues was increased and caused serious threat to the city image and water quality. In this work, unburned and nonautoclaved ceramsite as well as colour ceramsite were prepared by using shield residues as raw material. The results showed that the water absorption rate of prepared ceramsite was about 30 % and better than that of commercially available sintering ceramsite. The methylene blue solution adsorption effect of prepared ceramsite was also better than sintering ceramsite. The cylinder pressure strength of the prepared ceramsite was about 1.5 MPa and bulk density of prepared ceramsite was about 0.827 g/cm3. After soaking the prepared ceramsite was still not cracked, this was suitable for cultivation as bonsai. The unburned and non-autoclaved ceramsite can effectively solidify shield residue, which can avoid the pollution of water quality and also provide a new way for good use of shield residue for energy saving and environmental protection.
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References
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References
X.W. Tian and X.Z. Li, Build. Sci., 25, 77 (2009).
T. Hou and Z.L. Wang, Guangzhou Chem. Ind., 41, 96 (2013).
S.C. Wang, R.Z. Yuan, X.Y. Yu, C.J. Mao and H.H. Guo, Chin. J. Environ. Eng., 7, 1779 (2013).
Z.W. Zhang, P.Q. Peng, H.H. Zhou and J.Z. Liu, Low Temp. Arch. Technol., 1, 11 (2010).
W.L. Gao, Y. Chen, X.D. Li and X. Cao, Guangzhou Chem. Ind., 41, 13 (2013).
A.M. Marabini, P. Plescia, D. Maccari, F. Burragato and M. Pelino, Int. J. Miner. Process., 53, 121 (1998); http://dx.doi.org/10.1016/S0301-7516(97)00062-8.
K. Ramamurthy and K.I. Harikrishnan, Cement Concr. Compos., 28, 33 (2006); http://dx.doi.org/10.1016/j.cemconcomp.2005.06.005.
C.R. Cheeseman and G.S. Virdi, Resour. Conserv. Recycling, 45, 18 (2005); http://dx.doi.org/10.1016/j.resconrec.2004.12.006.
E. Kalkan, Eng. Geol., 87, 220 (2006); http://dx.doi.org/10.1016/j.enggeo.2006.07.002.
L.W. Zhu, Afr. J. Biotechnol., 10, 12934 (2011); http://dx.doi.org/10.5897/AJB11.949.
Z.J. You, Center of Materials Science and Engineering, Beijing, p. 19 (2006).
R.Y. Zhang, Chinese Resources Comprehensive Utilization, Xuzhou, China, P. 87 (2005).