Papers by Author: Jian Xiong Ye

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Authors: Jian Xiong Ye, Xin Gang Yu, Wen Yue Bi, De Jun Li, Hong Wen Ma, Hui Feng Zhao, Guo Hong Qiu, Li Wang
Abstract: ZrO2-CeO2 thin film was successfully prepared on 316L stainless steel by sol-gel process and the corrosion characteristics of the substrate coated with ZrO2-CeO2 thin film were evaluated through potentiodynamic polarization curve obtained in deaerated 15% H2SO4. The results show that, with the increase of CeO2 content, the corrosion rate of 316L stainless steel substrates coated with ZrO2-CeO2 thin film decreases. The surface morphology of the coating was observed by field scanning electron microscopy and the elements in the surface of coated substrate analyzed by FEM-EDX.
1838
Authors: Ke Chen, Chang Hui Yang, Fang Wu, Jian Xiong Ye, Qun Pan, Ze Dong Yu
Abstract: The slag is used as solid dispersing component with addition of a little amount of alkali component, a clinker free, alkali activated slag cement based ecomaterial (AASCBE) has been developed. The experiment results showed that the alkali activated slag cement based ecomaterial has excellent mechanical performances and durability, i.e., low energy consumption in manufacture, low environmental pollution, increased utilization of solid waste, enhanced efficiency of solid waste utilization, the heat from waste tyre or municipal domestic waste burning can be used for the material production, the CO2 can be recycled as a resource for the material curing and making the regeneration and recirculation possible. LCA study of this material shows that the complex environmental index of the alkali activated slag cement based ecomaterial is 2.9337×10-12 year/ton, which takes only 19.8% of that for Portland cement or 25.9% of that for slag cement, such material has certain environmental compensation function, therefore it is a new ecomaterial with excellent environmental coordination.
179
Authors: Ke Chen, Chang Hui Yang, Fang Wu, Jian Xiong Ye, Shu Ang Zhao, Xiao Bin Xiang
Abstract: In this paper, the influence of the types and addition dose of MgO expanding agent and the age of cement on expansion value and expansion performance of cement based material added with MgO expanding agent was systematically studied.The expansion characteristics of cement based material added with MgO expanding agent or calcium sulphoaluminate expanding agent were compared. The expansion of such material increases with the addition dose of MgO expanding agent and cement mortar age. During the test period, the expansion of cement based material increases continuously. The light-burned MgO expanding agent modified by CaO expanding agent is able to increase the 28d expansion of such material effectively. The temperature of calcination for the heavy-burned MgO expanding agent is higher than that of light-burned one, thus the heavy-burned MgO expanding agent has a rather dense structure with slow hydration rate and gives a small expansion of the cement based material at early age, showing an obvious expansion delay. The calcium sulphoaluminate expanding agent gives most expansion of the material in the early 28d and there is small expansion at middle and later age of the material.
968
Authors: Xin Gang Yu, Hong Fei Wang, Yue Xiang Li, Yi Gong, De Jun Li, Jian Xiong Ye, Dong Shu, Ming Wei
Abstract: The high performance coal gangue foam concrete with the dry density less than 440kg/m3, the thermal conductivity less than 0.085W/(m•K) and the compressive strength over 2.0 MPa was prepared. The microstructure of the coal gangue foam concrete was analyzed by SEM. The hydrates of the coal gangue foam concrete were detected by XRD, and the temperature stability of the coal gangue foam concrete was analyzed by DTA and DSC.
185
Authors: Yu Zhao, Hai You Peng, Jian Xiong Ye
Abstract: In order to reveal the relation between concrete strength grade and concrete permeability, based on C20, C25, C30 and C40 concrete impermeability and gas-proof tests, the effects of concrete strength grade on concrete impermeability and gas-proof are investigated. The results show that the gas-proof and impermeability property of concrete increase when concrete strength grade are subjected to higher one.
1896
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