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But result of Eq. (2) doesn't consider two different surface material, bontile (or paint) and patching repair material.
Therefore, Eq. (2) is hard to guess diffusion of two different surface materials, but it will be possible to guess chloride concentration at rebar point.
Acknowledgements This work was supported by Sustainable Building Research Center of Hanyang University which was supported by ERC program of Ministry of Education, Science Technology (#R11-2005-05604003-0) and Standard Technology Improvement Project supported by Ministry of Knowledge Economy(#2007-000-0000-6365).
Lee: A study on the effect of resistance to the chloride ion penetration with various surface finishing materials, Architectural Institute of Korea(AIK) 60th anniversary forum Vol. 25(1) (2005), p.p. 341-344 [2] H.S.
Lee: A Prediction of the Durability life at RC Structure with Surface Finishing Materials in Marine Environment, AIK Journal, Vol. 22(1) (2006), p.p. 119-126 [3] L.Tang and L.O.Nilsson: Rapid Determination of the Chloride Diffusivity in Concrete byApplying an Electrical Field, ACI MATERIALS Journal, Jan.

Journal of Changchun University of Science and Technology, Vol.28 (2005), No.1, p. 98-99
Solar Energy Materials&Solar Cells Vol.105(2012).
Science China Chemistry, Vol.56 (2013), No.6, p.716-723
European Polymer Journal.
Polymer Materials Science and Engineering, Vol.27(2011), p.3140-142+146.

The fully bio-based P- and S-containing resin is expected to be flame-retardant materials.
Halogen-containing flame-retardant materials have been gradually banned in recent years due to their toxicity.
Non-toxic and effective flame-retardant materials such as P- and S-containing materials have drawn great attention.
Li, et al: Advanced Materials Research, Vols. 183-185 (2011), p. 1534
Zheng, et al: Polymer Materials Science and Engineering, Vol. 28 (2012), p. 156

Thus, to obtain shaped bimetallic blanks from a given pair of materials, it is necessary to develop a fundamentally new production technology that provides a high level of special properties and adhesion strength of layers of materials.
Kosnikov // Journal of the Siberian Federal University.
Science and Education ”, St.
Tsemenko, Theory and modeling of the processes of deformation of powder and porous materials.
Science, St.

Introduction The research of carbon fiber functional materials at present mainly include carbon fiber reinforced cement-based composites,polymer-matrix composite materials,metal-matrix Composites etc.
Polymer-matrix carbon fiber composite materials include conductive polymer materials,smart layer of carbon fiber felt,carbon fiber multiply laminate and resin continuous fiber and so on.
New Carbon Materials. 2008, 23(2)159~164 [6] M.
Journal of functional materials. 2009,39(3)440~442 [8] Zhang Xiaoyu, Li Zhuoqiu, Song Xianhui.
Sensor function characteristic research of carbon fiber smart layer [J].journal of Huazhong University of Science and Technology , 2008，25（2）：36-38 [9] Shen Lie, Yi Xiaosu.

They found problems about these materials in other manufacturing process such as laser machining, abrasive jet machining, ultrasonic machining and diamond wheel grinding.
Journal of Procedia Engineering, 2013, 64, 1069-1078
International Journal of Applied Mechanics and Materials, 2012, 159, 176-180
Álvarez”, Analysis of the influence of EDM parameters on surface quality, MRR and EW of WC–Co”, Journal of Materials Processing Technology 153–154 (2004) 1026–1032
[6] Singaram Lakshmanan, Mahesh Kumar, Al Mussanah College of Technology, Oman; Optimization of EDM parameters using Response Surface Methodology for EN31 Tool Steel Machining, International Journal of Engineering Science and Innovative Technology (IJESIT) Volume 2, Issue 5, September 2013

Instrument And Material.
Experimental Methods Preparation of Solution 5%stock solution of dithizone chloroformDissolve 0.05g of dithizone in the 50mL chloroform (Filter the solution if there are insoluble materials in it).
Journal of Kunming University of Science and Technology（Science and Technology）,2007,32（6）：81-83
Journal of Shenyang Normal University(Natural Science Edition).2002, 20(4)：292-294
Materials Protection,2007, 40(2)：75-76

High Performance LaCo0.6Ni0.4O3-δ Cathode Contact material for Intermediate Temperature Solid Oxide Fuel Cells LI Daoguanga, WANG Fangzhongb, ZHANG Wenyingc, PU Jiand * Center for Fuel Cell Innovation, School of Materials Science and Engineering, State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science & Technology, Wuhan 430074, China aldglp1988@gmail.com, bwangfangzhong@gmail.com, cwenying861001@126.com, dpujian@hust.edu.cn Keywords: LaCo0.6Ni0.4O3-δ, cathode contact material, polyvinyl alcohol, area specific resistance, pretreatment Abstract.
In research, some perovskite cathode materials can also be used as CCM, such as LSM, LSC, LSCM, and LSF [6,7].
Those materials exhibit good compatibilities with cathode and also have good conductivities.
However, for these Sr-based cathode materials, the element Sr will react with Cr from the interconnect or the oxide scale to form brittle phase SrCrO4 [6,8,9], which will increase the overall resistance of the stack.
Lee, Science, 334 (2011) 935-939

Fang, Research on processing technology product design and the application of nano-wood-plastic composite materials,Journal of Nanoscience and Nanotechnology. 20:12 (2020) 7787-7792
Safin, Microcrystalline cellulose from lignocellulosic material activated by steam explosion treatment and mathematical modeling of the processes accompanying its preparation, Materials Science Forum. 945 (2019) 911-918
Mukhametzyanov, Thermal modification of high moisture round logs in the environment of saturated water vapor with simultaneous predrying, IOP Conference Series: Materials Science and Engineering. 666:1 (2019) 012-081
Yalcin Properties of composite panels produced from cotton waste and red pine wood mixtures, Journal of Applied Life Sciences International. (2018) 1-9
Safin, Impact of a reactor design features on wood raw materials torrefaction parameters, IOP Conference Series: Materials Science and Engineering. (2020).

Due to the invasion of edge-bottom water, using conventional "flow" material balance method to calculate the formation pressure is no longer applicable.
Therefore, (according to the theory of flowing material balance extrapolation method and ) considering water production(,) this article established a suitbale method (which is) basing on flowing material balance to calculate the pressure of water drive gas reservoir.
The table 1 shows that, calculation results using improved flowing material balance method is higher than those using flowing material balance method, which is more suitable to the actual situation.
Journal of DaQing petroleum institute, 2007, 31(1):35-37
Journal of Xi’An ShiYou university(Natural Science Edition), 2008, 23(5):40-42