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Based on this fact, reinforcement start to use durable composite materials, such as technical textiles made of them.
Materials Composite reinforcements used in this experiment were made from roving in matrix of epoxy resin.
A perfect bond was discovered between materials, HPC and composite reinforcement.
Hamelin, Contribution to direct tensile testing of textile reinforced concrete (TRC) composites, Materials Science and Engineering A 528 (2011) 8589-8598
Šejnoha, Homogenization of plain weave composites with imperfect microstructure, part II. analysis of real-world materials, Journal for Multiscale Computational Engineering 11 (5) (2013) 443-462

Introduction Concrete is a kind of building material used widely in civil engineering, which have some merits ,such as low cost, extensive raw materials, simple process ,easy molding etc., but at same time, concrete is also a kind of brittle material with some faults , for example ,the ratio of tensile-compressive strength is low, it has non-uniformity, it is easy to crack, and impact resistance toughness is poor, so it is often added a certain amount of fiber to improve the performance of concrete in engineering. polypropylene fiber is a kind of fiber which the chemical properties are stable, acid and alkali resistance is strong, and can’t react with cement, mineral admixture, water and additive etc., This research will use fly ash and polypropylene fiber to improve the brittle, impact resistance and other performance of concrete, so as to meet needs of large-scale important engineering in current and future.
Experimental Raw Materials Cement: Chongqing ordinary Portland cement (42.5 R), which technical performance was accord with "common Portland cement" (GB175 -2007 ).
The mass ratio of water to cementitious materials was 0.39, The total cementitious material content was maintained constant(410kg/m3), and the replacement level of fly ash was 20%, sand percentage was 34%.
Acknowledgements This work was financially supported by Supported the science and technology item of Chongqing Municipal Education Commission (KJ090428), doctoral Science Foundation of Chongqing Jiao tong University and Youth Foundation of Chongqing Jiaotong University.
References [1] Rongxi Shen etc., Fiber reinforced cement and fiber reinforced concrete [M]，Chemical Industry Press，2006.9：291~295 (In Chinese) [2] Zhaoyi He, Zhengguo Zhang, Guowei Wang，Journal of Chongqing Jiaotong University Natural Sciences，2008,Vol.27 No.2 (In Chinese) [3] Li Bei-xing etc., Chemistry and Materials Science, 2004,Vol19 No3: 68-71 [4] H.Toutanji etc., Cement and Concrete Research, 1998,Vol28 No7: 961-968

A wide range of materials can be used in SLS, such as nylon, polycarbonate, ABS, sand, wax and metal[3], but high price of materials is the bottleneck to constrain SLS application widely, so reducing the cost of materials has always been a research focus in this area.
Wood-Plastic Composites (WPC) is green biological materials, it has many advantages such as good mechanical properties, high hardness, anti-aging, dimensional stability, easy to color, with wood texture and also recycled, the most important advantage is low-cost[4].
It indicates that wax shows good bonding with WPC because both of Co-PES hot-melt adhesive powder and alkalized wood powder are non-polar materials.
Journal of Harbin University of Commerce(Natural Sciences Edition). 2008, 24(6): 730-732
Plastics Science and Technology，2006，34(1)： 1

High temperature degradation of Co based superalloy in incinerator environment Deepa Mudgala, Pawan K.Vermab, Surendra Singhc, Satya Prakashd Department of Metallurgical & Materials Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India.
[5] H.H.Krause, High temperature corrosion problems inwaste incineration systems, Journal of materials for energy systems, Vol7, Number4, March 1986, pp.322-332
Weulersse-Mouturat, G.Moulin, P.Billard and G Pierotti , High temperature corrosion of superheater tubes in waste incinerators and coal fired plants, Material Science Forum, Vols 461-464 (2004) pp. 973-980
Sci., Vol. 33, No. 3, June 2010, pp 299–306. © Indian Academy of Science [9] Daniela Pilone, “feeriic stainless steels for high temperature applications in oxidizing environment” Recent patenets on Materials Science, Vol 2, 2009, pp. 27-31
Prakash High temperature corrosion behaviour of some Fe-, Co- and Ni-base superalloys in the presence of Y2O3 as inhibitor Applied Surface Science Volume 255, Issue 15, 15 May 2009, pp. 7062-7069.

Bridge Action of Double-deck Films Interface Electrons ZhiGuo Zhang The Institute of Functional Materials Qhuanzhou Normal University Quanzhou, China 362000 email: qzzzg@yahoo.com.cn Keywords: Bridge action, Double-deck film, Interface Abstract.
The brief energy band map of crystallite film materials For briefness, a model of one dimension monolayer atom is used here.
Conclusion It can be known from above analysis that the film is composed of a number of grains, for many materials, scattering effect of a number of barriers ∆ is very remarkable on carriers, thus, the film is changed into insulators.
G, Chinese Journal of Semiconducrors, Vol. 12 (1991), p709 [2] Yang Zhiwei, Han Shenghao, Yang Tianlin, Acta Physics Sinica, Vol. 49,（2000）, p1200 [3] Yutaka Ohhata*, Fujitoshi Shinoki and Sada Fumi Yoshida, Thin Solid Films, Vol.59, (1979), p255-261 [4] V.Sittinger，F.Ruske，W.Werner，C.Jacobs B.Szyszka, D.J.Christie, Thin solid films, Vol.516, (2008),p 5847-5859 [5] S.Diplas, A.Ulyashin, K.Maknys, A.E.Gunnaes, S.Jorgensen, D.Wright, J.F.Watts, Thin solid films, Vol.515, (2007), p8539-8543 [6] Masayuki Okuya, Nobuyuki.Ito, Katsuyuki Shiozaki, Thin Solid Films, Vol.515, (2007) p8656-8659 [7] Jiaxiang Liu, Da Wu, Shengnan Zeng ,Journal of Materials Processing Technology, Vol.209,(2009),p3943-3948 [8] J.H.
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Introduction Engineering ceramic materials have many application in mechenics, electronics, chemistry engineering and other fields, because of their high hardness, high-temperature strength, good wear resistance and good corrosion resistance.
However, to process such hard and brittle materials is a difficult work.
The poor machinability of this kind of materials, owing to their low fracture toughness and very limited ductility, have hindered their commercial exploitation[1].
[3] Hammonds J J S, Shannon M A: International Journal of Heat and Mass Transfer Vol.46(2003), p523-534
[7] Yuan Gen-fu, Zeng Xiao-yan: Chinese Journal Laser, Vol.30(2003), p246-270(in Chinese).

At present, the related researches of the piezoelectric vibration energy harvester at home and abroad generally focus on the preparation of piezoelectric materials and applications of new piezoelectric materials, piezoelectric structural design optimization, power management and the design of matching circuit[3,4].
The material of the cantilever is beryllium copper, the material of the piezoelectric layer is bulk PZT, so it can called PZT layer, the mass material is a high density nickel metal.
Journal of Guangxi University (Natural Science Edition).
Vol. 30 No.4 (Dec.2005) p.288-292. in Chinese [3] Sodano H., Inman D. : A Review of Power Harvesting from Vibration Using Piezoelectric Materials.
Journal of Micromechanics and Microengineering, Vol. 14 No. 5 (2004) p. 717-721.

The soils and rocks are Mohr-Coulomb elastoplastic materials, the parameters are shown in Table 1.
Onate: Science Vol. 233 (1986), p. 1043 [2] R.D.
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Kuhlemeyer: Journal of the Engineering Mechanics Division, Proceedings of the ASCE 95 Vol.
Tang: Journal of earthquake engineering and engineering vibration Vol. 29 (2009), p. 14 (in Chinese)

Introduction Porous ceramic materials have many applications.
Porous Materials Vol. 5 (1998), p. 241
Membrane Science Vol 163 (1999), p. 229
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Materials Vol. 5 (2003), p. 715

Material and trial execution.
The work is also part of the Young Investigator Group (YIG) “Tailored Composite Materials for Lightweight Vehicles”, generously funded by the Vector Stiftung.
References [1] Henning F, Kärger L, Dörr D, Schirmaier FJ, Seuffert J, Bernath A: Fast processing and continuous simulation of automotive structural composite components, Composites Science and Technology 171: 261-279, 2019
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