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Online since: January 2018
Authors: Jiří Němeček, Rostislav Šulc, Michal Himmel
Materials and Sample Preparation Concrete specimens were made from Portland cement (CEM I 42,5 R location Mokrá, CZ) used as a binder, sand and natural crushed aggregate (location Zbraslav, CZ).
Shah, Modification of cement based materials with nanoparticles, Cement and Concrete Composites 36 (2013) 8 - 15, special issue: Nanotechnology in Construction
Struble, Electrokinetic nanoparticle treatment of hardened cement paste for reduction of permeability, Journal of Materials in Civil Engineering 18 (4)
Gonzalez, Preliminary attempt of hardened mortar sealing by colloidal nanosilica migration, Construction and Building Materials 66 (2014) 306 - 312
Materials, Systems and Structures in Civil Engineering 2016, Segment on Electrochemistry in Civil Engineering.
Online since: July 2011
Authors: Li Ming Wu, Zi Jian Wang
Fig.2 The structure of building floor plan Fig.3 The structure of building Section Plane The Properties of Materials.
Table 2 Member Size and Strength of Material Member Cross-section /mm Strength of material Upright post 450×450 C25 Beam 250×350 C25 Foundation beam 300×400 C25 Pile 800×800 C25 Wall 240 Mu10 Floor 100 C25 Table 3 The related parameters of soil Soil number Proportionality constant Internal friction Average bulk density Lateral pressure coefficient Negative friction coefficient The friction strength 1 2000 10 16.5 2000×H 0.3 -4.80e3 2 4000 22 18.0 4000×H 0.3 -16.14e3 3 3000 30 20.0 5000×H 0.3 -33.78e3 Building Model.
Table 4 The contrast of Internal Forces and displacement in right load step The contrast of result Model one Model two The max-displacement of model in y (m) -0.107e-3 -0.00135 The max-stress of floor’s node in z (Mpa) 342447 26500 The max-displacement of frame in y(m) 0.396e-4 -0.00116 The max-displacement of wall in x (m) 0.107e-3 -0.135600 From above of compare the result can discover, the earthquake in the same material, size and homology acts etc. under the condition, internal force and strain of model two’s nodes and units’ internal force are bigger than model one, this model adoption is a pile foundation -soil- Superstructure act together.
Separate respect the foundation and upside structure while designing, if want to satisfy the earthquake of structure loading force then the beard raises material of intensity.
Journal of Chongqing Jiaotong University Natural Science,Vol. 540-543 (2008), p. 27(4).
Online since: May 2012
Authors: Wei Hou
Concrete material compression strength is 36MPa.
The Steel material, buckling or non-buckling type are provided in Perform-3D.
For a steel bar component the material can be a steel material of non-buckling bilinear model according to ductility design requirement.
Acknowledgements This work was financially supported by the China Nation Natural Science Foundation (No. 50778149) and Huaqiao University High-level talents Introduction Start-up Foundation (No. 11BS414).
Journal of Building Structures (In Chinese).
Online since: January 2014
Authors: Shi Hua Li
From his essay on honor or disgrace, he pointed that “Economize on expenses, control extravagant hopes, pay attention to collection, and store up resources of materials, so as to ensure continuity of supplies; Won’t it be a good thing for future needs from the aspect of long-term interests?”
And in the mean time, he brought forward the effective measures of development: conservation of expenses, control extravagant hopes, pay attention to collection, and store up resources of materials, suppression of appetency, appropriate collection, accumulation of materials, constant supply, and so on.
Confucian Thought of Loving All Things and Modern Ecological Ethics [J], Journal of China youth college for political sciences, 1996, (2): Pp81-87
Online since: December 2014
Authors: Ling Qiang Yang, Yan Wang
Introduction Cemented sand and gravel (CSG) has the advantage of less material consumption and relatively simple production procedure.
The influences of weak bonds to the safety of dam depends on the strength of CSG material, therefore, it is important to study the weak bonds to the strength of the material.
To validate above analysis, composite material mechanics are used to calculate for cases with 00 and 900 angle.
Concept of CSG and its material properties. 4th International Symposium on Roller Compacted Concrete Dams.
International Journal on Hydropower and Dams, v 19, n 3, p 58-63, 2012 [4] L.Q Yang,Y.
Online since: March 2013
Authors: Chih Ming Chen, Huey Ling Chang
Polymer Matrix on Polymer Dispersed Liquid Crystals Electro-optical Properties Huey-Ling Chang1*, a and Chih-Ming Chen2*,b 1Department of Chemical and Materials Engineering, National Chin-Yi University of Technology, Taichung 41170, Taiwan (R.O.C.) 2Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 41170, Taiwan (R.O.C.)
Experimental Materials 2-Hydroxy ethyl methacrylate (HEMA), Methyl methacrylate (MMA), ethyl methacrylate (EMA), n-butyl methacrylate (nBMA), and Tetraethylene glycol diacrylate (TEGDA) were purchased from TCI, while Benzoin and E7 liquid crystals were purchased from Acros Organics (UK) and E.
Note that all the purchased materials were used as-received without further purification.
Chen: Journal of Applied Polymer Science, Vol.118(3) (2010), p. 1349
Online since: March 2010
Authors: Yong Qi Liu, Yan Xia Wang, H.Y. Shi
Considering the nonlinear material properties, the Newton-Raphson equilibrium iterative method is applied to calculate the nonlinear responses.
From Fig. 2, you can see that the maximum stress is 237MPa, which does not exceed the material yield strength (250MPa), and that it occurs at the upper end of piston pin boss inner hole.
Although it doesn't exceed the yield strength of the material, the mechanical fatigue breakdown would most likely occur at the place.
Mechanical Science and Technology, Vol.21(2), (2002), p.222.
Shi. submitted to Journal of Advanced Materials Research (2009).
Online since: November 2012
Authors: Ning Li, Jing Zhao, Wei Xia, Feng Lei Li
In these techniques, burnishing is a relative convenient and economic method to improve the hardness and roughness of workpiece, which can significantly enhance the tribological properties of conventional materials.
It is interesting that there are also similar shallow plough marks at the outermost edges of the worn scar, which result from the accumulation of material.
Acknowledgements This work was supported by the National Natural Science Foundation of China (No. 50975095), the Fundamental Research Funds for the Central Universities, SCUT (No. 2012ZM0048).
Hassan: International Journal of Machine Tools and Manufacture, Vol. 37 (1997) No.6, p.813
Zhou: Materials of Mechanical Engineering, Vol. 27 (2003) No.9, p.21
Online since: January 2013
Authors: Yi Xing Yuan, Yu Fei Tan, Mu Xin Han, Dong Mei Li, Yu Jie Feng
In this study, enzymatic hydrolysis ratio of pretreated raw material (EHRP) was taken as the response value, and further reveals the interactions of different processing parameters, such as water to corn straw ratio (WCSR), microwave power (MP) and processing time (PT) etc..
Materials and Methods 1.1 Materials The corn straw was obtained from the suburb of Harbin, Heilongjiang province, China.
EHRP was calculated in accordance with the following formula: EHRP (%) = the content of reducing sugar after enzymatic hydrolysis (g) / the content of cellulose in raw material (g) x 100% 2.
Acknowledgments This research was Supported by State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (No.2010QN03) and National Natural Science Foundation of China (No.51108116).
Journal of Neuroscience Methods.
Online since: May 2007
Authors: Hong Chao Kou, Hai Tao Cao, En Zhi Gao, Rui Hu, Heng Zhi Fu, Jin Shan Li, Lian Zhou
MTG(Melt textured growth) [1] is one of the most effective methods for fabricating the high Jc YBCO bulk superconductors because melt-processing methods [2,3,4] have been successfully used to eliminate the weak-link behavior of bulk materials by grain alignment.
The sample preparation [5]: first, the raw materials of Y2O3, BaCO3 and CuO were mixed thoroughly by taking nominal ration 1:2:3 and then calcined twice at 900� for 12h with an intermediate grinding.
Acknowledgements This work was supported by the National Natural Science Foundation under Grant No. 50432050 and Young Teacher Innovative Foundation of the Northwestern Polytechnical University under Grant No.
Wang, et al., Chinese Journal of Low Temperature Physics, Vol.23, No.3, (2001), p.193 A.
:Rare Metal Materials and Engineering, Vol. 25(1996), No.5, p.7 [7] Cima M J et al. : J.Appl.Phys., Vol.72, No.1, (1992), p.179 [8] T, Izumi, Y.