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Experimental Program Material The cement (C) used in the experiment is portland cement 42.5 provided by Wuhan Huaxin Cement Co., Ltd.
Moreover, large volume fraction of fiber will also increase interfacial area between fibers and cement-based material, thus increasing permeability of chloride ion.
However, with the increase of fiber volume fraction, interfaces between fiber and cement-based material increase, too many interfaces not only reduce compaction of concrete, but also easily generate cracks.
References [1] Zhijun Xu: Technology and application of fiber reinforced concrete(China Architecture & Building Publications, China 2003)(in Chinese) [2] Yi Li, Wen Zhao: Crack resistance and durability of hybrid fiber reinforced concrete (Science Publications, China 2012)(in Chinese) [3] Chenfei Wang, Ditao Niu: Journal of Concrete, Vol.10 (2011), p.82-84 (in Chinese) [4] H.Toutanji, S.Mcneil, Z.Bayasi: Journal of Cement and Concrete Research, Vol.28 (1998), p.961-968 [5] Baoguo Ma, Yu Jin: Journal of Concrete, Vol.8 (2007), p.44-46 (in Chinese) [6] H.Toutanji: Journal of Construction and Building Materials, Vol.13 (1999), p.171-177 [7] Lei Hong, Xingcai Wei and Minggang Wang: Journal of Building Materials, Vol.16 (2013), p.143-146(in Chinese) [8] Kejin Wang, Daniel.C.Jansen and Surendra.
P.Shah: Journal of Cement and Concrete Research, Vol.27 (1997), p.381-393

Research on Extraction and Refinement of Gutta-Percha from Eucommia Ulmoides Leaves after Comprehensive Utilization Furong Shana, Mengqi Wangb, Yang Baic and Zhiming Yud,* College of Materials Science and Technology, Beijing Forestry University, Beijing, 100083, China amiaofengandxiaok@163.com, bzuiailangwang@sina.com, cbaiyang198812@126.com, dyuzhiming@bjfu.edu.cn *corresponding author, professor.
Introduction Eucommia ulmoides Oliv is a particular kind of economic tree species, rare Chinese medicinal crop, and important lighter materials [1] and gum tree species [2].
Materials and methods Materials and Reagents.
Chen: Journal of Chemical Industry of Forest Products, Vol. 39 (2005) No. 4, p. 16-19
Zhang et al: Journal of Guizhou University of Technology (natural science edition), Vol. 30 (2001) No. 6, p. 11-14.

Materials Science & Engineering A. 2007;456:305-316
Materials Science & Engineering A. 2002;338:142-159
Materials Science & Engineering A. 2016;671:17-31
Jom the Journal of the Minerals Metals & Materials Society. 2015;67:2303-2309
Materials Science & Engineering A. 2014;598:7-14

Lebelo et al. [13, 14] analyzed the heat transfer in a stockpile of reactive materials designed in a rectangular slab by assuming a two-step exothermic chemical reaction and the heat loss to the surrounding environment is by radiation.
Makinde, Numerical investigation of CO2 emission and thermal stability of a convective and radiative stockpile of reactive material in a cylindrical pipe, Advances in Mechanical Engineering, 7 (2015), 1-11
Moloi, Transient heat analysis in a two-step radiative combustible slab, Key Engineering Materials, 872 (2021), 15-19
Kumar, Radiation and non-uniform heat sink/source effects on 2D MHD flow of CNTs-H2O nanofluid over a flat porous plate, Multidiscipline Modeling in Materials and Structures, 16 (2020), 791-809
Malik, Model-based comparative study of magnetohydrodynamics unsteady hybrid nanofluid flow between two infinite parallel plates with particle shape effects, Mathematical Methods in the Applied Sciences, 2022; pp. 1- 15

“In Chinese” [2] Qin Guo-hua and Wu Zhu-xi, and Zhang Wei-hong,“Analysis and control technique of fixturing deformation mechanism of thin-walled workpiece,” Chinese Journal of Mechanical Engineering,Vol.43,p.211-216,(2007).
“In Chinese” [3] Dong Hui-yue and Ke Ying-lin,“Finite element simulation for optimal clamping scheme of thin-walled workpiece in milling process,” Journal of Zhejiang University:Engineering science,Vol.38,p.17-21,(2004).
“In Chinese” [4] Ratchev S,Liu S,Huang W, and Becker AA, “An advanced FEA based force induced error compensation strategy in milling,” International Journal of Machine Tools and Manufacture,” Vol.38,p.542-551,(2006)
[5] Wang Y,Xie J,and Gindy Nabil, “A parametric FEA system for fixturing of thin-walled cylindrical components,” Journal of Materials Processing Technology, Vol.205, p.338-346, (2008)
[6] Cogun C,“The importance of the application sequence of clamping forces on workpiece accuracy,”Journal of Engineering for Industry,Vol.114,p.539-543,(1992).

Materials of Region’s main geological Engineering Conditions Topography.
References [1] Zhenhan Cheng, Shuguo Sun, Xiangwei Fang,etal.Recent advances of the measuring technology for unsaturated soils and special soils [J].Chinese Journal of Geotechnical Engineering, 2006, 28(2):147-169
International Journal of Rock Mechanics and Mining Sciences 11(1974) [5] Zhaomiao Liu, Xin Liu, Guobin Wang .Analysis on Vortex in Drag Creeping Laminar-flow of Coating Fluids Between Plates Journal of Beijing University of Technology08(2011) [6] Weitao Chen, Mingnian Wang .Analysis of causes and disposals for water gushing of land regions Xiamen of submarine tunnel [M.
Chinese Journal of Geotechnical Engineering(2008) [7] Tingwu Lei, M.A.Nearing .Laboratory Experiments of Rill Initiation and Critical Shear Stress in Loose Soil Material.
Journal of the China Railway Society05(2009)

For example, BROWN S, FPappin J.W. (1981),it used a secant modulus approach, had been specifically developed to deal with nonlinear materials, and was called SENOL for secant modulus nonlinear.
The nonlinear stress-strain response of unbound granular materials has to be modeled satisfactorily when numerical analysis is used for pavement structures[3].
The material of the calculated parameters see tab.1.
Journal of Liaoning Technical University.Vol. 26(2007),p.198.
Journal of Shenyang Architecture University:Science edition.Vol. 27(2008),p.44.

Table 1 Selected CSFs in the production process Product Design Environment Manpower Material Machine\technology Q1.
New requirement of material Q13.
Material that is the heart of manufacturing industry is in third position (.1845) with the 78.2% confidence level.
Vol 34, no. 1 (1996), p. 15 – 27 [8] Brady, A and Voss, B., Small is as small does, Journal of Business Strategy, vol 16 no. 2 (1995), p. 44 – 52
And Powell, P., Toward a framework for Business Process Reengineering in small and medium-sized enterprises, Information systems Journal, Blackwell Science Ltd.

Tg of the material was 105 oC.
And it was discovered that for the given material and dimensions of specimen, there existed a critical amplitude.
[4] Z.B.Zhang, X.D.W, Y.Luo, Z.Q.Zhang, L.D.Wang, Study on heating process of ultrasonic welding for thermoplastics, Journal of Thermoplastic Composite Materials., 9 (2009) 647-664
[5] W.H.Shi and Trevor Little, Mechanisms of ultrasonic joining of textile materials International.
Journal of Clothing Science and Technology, 12(2000) 331-50

Kinetics and Thermodynamics of Cd(Ⅱ) Sorption onto Sodium Alginate/Poly(vinyl alcohol)/Hydroxyapatite Composite Fiber Zize Yang1, a, Xiao Wang1, b* , Chun Ma2,c , Lihua Lv1, d, Chunyan Wei1, e and Byung-gil Min3, f 1School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China 2School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China 3School of Advanced Materials and System Engineering, Kumoh National Institute of Technology, Gumi 730-701, Korea ayangzize789@163.com, bwangxiao@dlpu.edu.cn, cmachun@dlpu.edu.cn, ddllvlh1978@163.com, eweicy@dlpu.edu.cn, fbgmin@kumoh.ac.kr Keywords: Hydroxyapatite, Sodium alginate, Poly(vinyl alcohol), Adsorption kinetics, Thermodynamics.
Experimental Materials.
The constant n is the empirical parameter related to the intensity of adsorption, which varies with the heterogeneity of the material.
Journal of Colloid and Interface Science. 287 (2005) 14-24
Journal of Hazardous Materials, 161 (2009) 231-240