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Smear a small amount of foam mixture on the slide to test the cohesion strength of foaming materials.
Fig. 4 shows the SEM morphologies of foam materials.
Functional materials. 44(2013) 922-925
Journal of Analytical and Applied Pyrolysis. 100(2013) 103-110
[7] LU Zixing, Li Huaixiang, Polyurethane foam cell structure characteristic, J.Polymer Materials Science and Engineering. 11 (1995) 86-91

Triethanolamine (TEA) is a typical chemical admixture used in the construction materials.
Mechanistic investigations of TEA in cementitious materials have been carried out for several decades [4].
Experimental Methods Raw materials.
The dosage of TEA was 0.01%~0.10% by weight of total cementitious materials.
Pourchet, Why TIPA leads to an increase in the mechanical properties of mortars whereas TEA does not, ACI Materials Journal 217 (2003) 583-594

Titanium alloy, however, is one of the difficult-to-cut materials [1].
And the main parameters which influence the above factors are cutter materials, geometrical parameters and machining data etc.
The wear-resistance of cemented carbide YT726 is better than that of other cutter materials for titanium alloys deep-hole drilling.
Kirkwood: Journal of Materials Processing Technology, Vol.107 (2000), pp.222-227
Fang: Design of Orthogonal and Even Test (Science press, Beijing 2001).

Journal of Mechanical Design. 120(4)(1998), p. 620-627
Taliat, Thermal fatigue of materials for die-casting tooling.
Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing. 472(1-2)(2008), p. 198-207
Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing. 379(1-2)(2004), p. 420-431
Materials Science and Engineering: A. 483-484(2008), p. 343-345

Acknowledgement It is supported by the National Natural Science Foundation of China (Grant No.90715022) and Special Foundation of Earthquake Science of China (Grant No.201008006 and 200808021).
Takahashi: Journal of Structural Engineering, Vol. 44A (1998), p.659-666 (in Japanese)
Dogaki: Journal of Structural Engineering, Vol. 48A (2002), p.899-907 (in Japanese)
Dogaki: Journal of Structural Engineering, Vol. 49A (2003), p.553-561 (in Japanese)
Wu: Journal of Zhejiang University, Vol. 40 (2006), p.2180-2185 (in Chinese)

During weld fatigue analysis, load variation is regarded as a sine curve and master S-N curve is chosen as the curve of 99.7% reliability for aluminum material.
Acknowledgment The authors gratefully acknowledge the financial support for this work from the program (11202041) of the National Natural Science Foundation of China, the program (GZ1204) of State Key Laboratory of Structural Analysis for Industrial Equipment and the international cooperation project (2010DFB80050-1) of the Ministry of Science and Technology.
Liu, “Optimization strategy of aluminum-alloy car-body of high speed train unit,” Chinese Journal of Computational Mechanics, 2009, 26(3):424-427 [2] H.X.
Zhao, “Light weight design of welded vehicle structure with fatigue damage constraint,” Journal of The Chian Railwey Society, 2008, 30(5):109-113 [5] D.R.
Welch, “Efficient global optimization of expensive black-box functions,” Journal of Global Optimization, 1998. 13: 445-492 [6] S.N.

Multimedia technology used in teaching not only can facilitate the reform of educational modal, also can accelerate the renovation of teaching materials, teaching method and class teaching structure in the field of higher education.
Multimedia not only impinges on individual learning, but also on the many functions of the higher education sector: teaching, development of teaching materials and pedagogies, teacher training, assessment of students and accreditation of course material.
At present, a vast and rapidly increasing amount of educational material is becoming available over the Internet, and an increasing number of traditional providers of educational support material are moving into the WWW.
Journal of Educational Multimedia and Hypermedia, 1996，5(2)，129-150
Lemke: Education, cyberspace and change, Arachnet Electronic Journal of Virtual Culture, Volume 1, Number 1, at http://www.monash.ed u.au/journals/ejvc/ejvcv1n1.html .

Materials Science and Technology, 34 (2018) 1112-1117
Materials Science and Technology. 23 (2013) 819-827
Materials Science and Technology, 27 (2013) 525-529
Rare Metal Materials and Engineering, 39 (2010) 1993-1996
Metallurgical Materials Transactions A, 33 (2002) 1931-1938

Hydration Dynamics of Portland Cement Studied by Magnetic Resonance SHE An Ming1, a, YAO Wu2, b and YUAN Wan Cheng1, c 1 State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China 2 Key Laboratory of Advanced Civil Engineering Materials (Tongji University), Ministry of Education, Shanghai 200092, China a sheanming@gmail.com, b yaowuk@tongji.edu.cn, cyuan@tongji.edu.cn Key word: cement; hydration dynamics; relaxation time; low field NMR Abstract.
A complete and accurate understanding on the hydration dynamics would enable the engineers not only to predict the properties of concrete, but also to design new cement based materials.
Table 1 Chemical composition of cement w% Materials CaO SiO2 Al2O3 Fe2O3 MgO SO3 K2O MnO Cement 66.5 20.3 5.65 2.70 1.01 2.45 0.80 0.08 Table 2 Principal mineral compositions of cement w% C3S C2S C3A C4AF CaSO4 67.6 7.2 10.4 8.2 4.2 Test method.
Li: Journal of Wuhan University of Technology--Materials Science Edition vol. 25 [4] (2010), p.704
Yao: Science in China-Technological Sciences vol. 53 [6] (2010), p.1471

The outer decoration adopts the heat insulation and fire prevention material.
The ratio of the material recycle and utility has reached over 80%
* This work is supported by the National Natural Science Foundation (51178286) and National Natural Science Foundation (51578357).
Journal of shenyang architectural university: natural science edition, 2015(3)
Modern Science, 2008,(22): 128-129.