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Nano scale materials in various forms such as solid composites, complex fluids, and functional NP-fluid combinations are key to the new technological advances [9].
The percentage of nano materials was (0.25%, 0.5%, 0.75%, and 1%) by weight of the cement material .Cement glass “G” with nano materials (cement dust) and( Zno Nano rods) were compared with a reference mixture to evaluate the effect of the dosage of Nano materials.Chemical composition test for cement class “G” and cement dust was performed in the Iraqi Geological Survey Department in Ministry of Industry, Baghdad-Iraq, as given in Tables 1 and 2, respectively.
Table 1: Chemical composition of raw materials (Cement Class “G”) Material SiO2 Fe2O3 Al2O3 TiO2 CaO MgO SO3 LOI Weight% 30.38 2.61 5.95 0.33 42.64 3.80 1.840 7.97 Results and Discussion Density Result Fig.1 depicts the density of the prepared samples.
[11] American Petroleum Institute Specification for Cements and Materials for Well Cementing API Spec 10A.
Sobolev, "Nanotechnology in concrete – A review," Construction and Building Materials, vol. 24, pp. 2060-2071, (2010)

However, study of the behaviour of such materials has shown that they are more damage sensitive than metallic material especially due to thermal induced stress or temperature variations [1].
In this way, by incorporating heterogeneity of material properties into the model, the RFPA code can simulate nonlinear deformation of a quasi-brittle or brittle behavior with an ideal brittle constitutive law for the heterogeneous as well as relative homogeneous materials.
Acknowledgment The work in this paper is funded by National Natural Science Foundation of China (No.10672028).
Tang, et al: Key Engineering Materials 297-300(2005), p2567
Weibull: Journal of Applied Mechanics, 18(1951), p.293-297

Experimental Configuration Uniform Toyoura sand was selected as the test material, with D50=0.17 mm, Cu=1.7, emax=0.977, and emin=0.597.
Acknowledgements The first author acknowledges the financial supports provided by National Natural Science Foundation of China under Grant No. 50978165 and by Shenzhen Municipal Science and Technology Plan under Grant Nos.
Journal of Geotechnical Engineering, Vol. 109 (1983), p. 281
Journal of Geotechnical Engineering, Vol. 111 (1985), p. 265
The Hong Kong University of Science and Technology, Hong Kong, PhD Dissertation, (2005)

Introduction Nowadays, Ordinary Portland cement (OPC) concrete is the most popular and widely used building materials, due to its availability of the raw materials over the world, its ease for preparing and fabricating in all sorts of conceivable shapes.
However, due to the restriction of the manufacturing process and the raw materials, some inherent disadvantages of OPC are still difficult to overcome.
WPSA compose of some oxide materials derived from inorganic compounds that remain after burning.
[2] Rangan, B.V. (2008) Studies on Fly Ash-Based Geopolymer Concrete, Malaysian Construction Reasearch Journal, Vol. 3
[7] Valeria Corinaldesi, Gabriele Fava, and Maria Letizia Ruello, Paper Mill Sludge Ash as Supplementary Cementitious Material, Second International Conference on Sustainable Construction Materials and Technologies, (2010) [8] M.

And they created digital forensics science working group (SWGDE), which enjoyed a high reputation in the field of computer forensics.
[2] Dick Bussiere: Defining Digital Forensic Examination and Analysis Tools Using Abstraction Layers, International Journal of Digital Evidence,Winter 2003
[4] Carrie M W:An Historical Perspective of Digital Evidence: A ForensicScientist's View, International Journal of Digital Evidence (IJDE),2002,1(1):235-246
[5] LiDY,Liu:.Artifieial intelligence with uncertainty, Journal of Software,2004,15(11):1583-1594
[7] Xu Rong-sheng:Computer forensics development at home and abroad, Secrecy Science and Technology,Vol.11(2011),p7-8

Introduction To investigate plasticity, deformation and fracture of materials, discrete dislocation dynamics (DDD), in which each dislocation is adopted as a fundamental entity, is a powerful tool and widely used.
Chou, Model for interaction of dislocation arrays with a crack, International Journal of Fatigue, Volume 27, Issues 10-12, 2005, pp. 1170-1174
[7] A.Hartmaier, P.Gumbsch, Discrete dislocation dynamics simulation of crack-tip plasticity, Raabe, D., Continuum scale simulation of engineering materials.
Philadelphia: American Society for Testing and Materials, 1992. p. 37-49
[14] S.G.Roberts, Modelling the brittle to ductile transition in single crystals, Computer Simulations in Materials Science, 1996 (Series E: Applied Sciences vol 308) pp 409-33

However, the commonly used gravity foundation of wind turbine generator is usually controlled by the tensile stress of the bottom surface of the foundation, resulting in waste of materials.
For rock mass and concrete category of materials, although the use is not associated flow rule, it is more in line with the actual situation, this means that the material is unstable, and the export of elastic-plastic matrix is asymmetric.
For geotechnical materials, two kinds of models are mainly adopted for hardening rule: isotropic hardening and kinematic hardening.
Acknowledgments The reported research was partially supported by National Natural Science Foundation of China with grant 51278313, Liaoning Natural Science Foundation with grant 201202180, Science Foundation of Liaoning Education Department with grant L2012214, and Liaoning Electric Power Survey & Design Institute Foundation.
Deng: Engineering Journal of Wuhan University, Vol. 45 Sup. (2012), p.151 (in Chinese) [2] D.C.

These historical sources do not specify which parts of the tower were destroyed, or if the materials were reused.
Key Engineering Materials 01/2014
Key Engineering Materials, 2014
Open Construction and Building Technology Journal, 6 (2012) 384-391
Key Engineering Materials, 2014

Helmholtz Free Energy and the Activation Volume of Steady-State Creep in FGH96 Superalloy Zichao Penga*, Jinwen Zou, Lei Zhou and Xuqing Wang Science and Technology on Advanced High Temperature Structural Materials Laboratory，AECC Beijing Institute of Areonautical Materials, Beijing, 100095, China *apengzichaonba7@hotmail.com, Zoujw613@sina.com, 18548921417@sina.cn, Wxqcjr@163.com Keywords: Creep; FGH96; Helmholtz free energy; activation volume Abstract.
Element W Mo Zr B C Value 4.0 4.0 0.035 0.020 0.015 In this work, the creep tests were performed according to China national standard GB/T 2039-2012 uniaxial tensile creep test method for metallic materials [8].
[8] China national standardization administration, GB/T 2039-2012 Uniaxial Tensile Creep Test Method for Metallic Materials, China Standard Press, Beijing, 2012, pp. 1–38
Gibbs, Thermodynamic analysis of dislocation glide controlled by dispersed local obstacles, Materials Science and Engineering, 1969, 4:313
Reed, Heat treatment of Udimet 720Li: the effect of microstructure on properties, Materials Science and Engineering A, 259(1999), 85-97.

Based on the changes in the ultrasonic sound speed, tested materials are evaluated in terms of internal defects.
Ultrasonic inspection is one of non-destructive methods using ultrasonic waves to detect flaws inside the materials.
Due to the microstructural contents, ultrasonic sound speed shows some variations in the materials.
The chemical compositions for the charge materials are given in Table 2.
Rethwisch, Materials science and engineering: an introduction, 8th ed.