| Watermarking algorithm based on Her transform |
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| 作者姓名： | WANG Li-peng |
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| 作者单位： | College of Material Science and Engineering, Chongqing University, Chongqing 400045, P. R. China;College of Material Science and Engineering;Faculty of Construction Management and Real Estate, Chongqing University, Chongqing 400045, P. R. China;College of Material Science and Engineering, Chongqing University, Chongqing 400045, P. R. China;College of Material Science and Engineering, Chongqing University, Chongqing 400045, P. R. China;College of Material Science and Engineering, Chongqing University, Chongqing 400045, P. R. China;China Railway Eryuan Engineering Group Co. Ltd, Chengdu 610031, P. R. China;College of Material Science and Engineering , Chongqing 400045, P. R. China;Huaxia Campus of Nanan District, Chongqing University of Broadcast and Television, Chongqing 400060, P. R. China |
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| 摘 要： | Without natural lime stone, clay, shale and sandstone, with the mass fracrion of demolition concrete in raw meal up to 95%~99%, along with ordinary calcining process, the cement clinkers (hereinafter called recycled clinkers for short) were produced. Experiments and analysis were employed to compare these recycled clinkers with the cement clinker which was manufactured by natural lime stone and sandstone. It is shown that the two types of clinkers have completely the same positions of characteristic peaks of XRD; the clinker minerals of recycled clinkers are formed normally; the two clinkers have similar chemical composition, and the rate value design of recycled clinkers are more likely to higher calcium and lower silicon; the content of f-CaO of recycled clinkers meets the requirements of soundness; the 3d strength of cements produced by recycled clinkers reaches the requirements of 42.5 grade Portland cement, and the 28d strength reaches the requirements of 52.5 grade.
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| 关 键 词： | waste materials chemical composition cement clinker mineral compressive strength |
Watermarking algorithm based on Her transform |
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| WANG Li-peng.Watermarking algorithm based on Her transform[J].Storage & Process,2012(2):143-148. |
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| Authors: | WANG Li-peng |
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| Institution: | Chongqing Traffic Management Bureau, Chongqing 400054,P.R. China;College of Electrical and Information Engineering, Langzhou University of Technology, Lanzhou 730050, Gansu, P.R.China |
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| Abstract: | Without natural lime stone, clay, shale and sandstone, with the mass fracrion of demolition concrete in raw meal up to 95%~99%, along with ordinary calcining process, the cement clinkers (hereinafter called recycled clinkers for short) were produced. Experiments and analysis were employed to compare these recycled clinkers with the cement clinker which was manufactured by natural lime stone and sandstone. It is shown that the two types of clinkers have completely the same positions of characteristic peaks of XRD; the clinker minerals of recycled clinkers are formed normally; the two clinkers have similar chemical composition, and the rate value design of recycled clinkers are more likely to higher calcium and lower silicon; the content of f-CaO of recycled clinkers meets the requirements of soundness; the 3d strength of cements produced by recycled clinkers reaches the requirements of 42.5 grade Portland cement, and the 28d strength reaches the requirements of 52.5 grade. |
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| Keywords: | waste materials chemical composition cement clinker mineral compressive strength |
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