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For obtaining the desired properties, it is necessary to find out related factors resulting in different morphology and crystal structure of PSC fibrils.
From present work, we expect to find some clues, which can be used to improve the mechanical properties of fibrillar PSC products as well as underlie our further development of artificial tendon which is underway.
Results and Discussion The morphology of fibrils formed from PSC solution by salting out is affected by various factors, including specific ions, pH, temperature and even the manner of adding salts.
By analyzing the various conditions of fibril formation, we may have better understanding to the factors affecting PSC fibril formation that may be references to modulate or improve the mechanical properties of fibrillar PSC products.
Conclusions The morphology of fibrils formed from PSC molecule solution by salting out and by gelation is affected by various factors, including specific inorganic ions, pH, temperature and even the manner of adding salts.

Test and Application of High Performance Concrete Ping Tan1,a，Yanmin Zhao2,b，Qiuhong Meng3, c 1,2Northern Beijing Vocational Education Institute,Beijing of China atanping106@163.com,b mhx791288@126.com,c1439624210@qq.com Key words: High Performance Concrete；Workability；Mechanical Property；Durability Abstract: The durability of high performance concrete is the main index of design. design.With the high durability, the high volume stability,the high compressive strength and the good workability, high performance concrete widely used in high-rise buildings, large-span Bridges, offshore in the construction of buildings, roads, etc.This paper prepared with different water/cement ratio of high performance concrete and tested the concrete workability, mechanical properties, durability.High performance concrete need preparate with low water/cement ratio, choose high quality raw materials,adding a sufficient number of mineral admixtures and high-performance admixture.
properties as the main basis[5].
Table 1 Test of concrete mix proportion kg/m3 Serial number water/cement ratio water cement fly ash mineral powder sand gravel admixture 1 0.28 134 341 56 83 680 1063 5.76 2 0.29 139 341 56 83 680 1063 5.76 3 0.30 144 341 48 91 680 1063 5.76 4 0.31 149 341 48 91 680 1063 5.76 5 0.32 154 341 48 91 680 1063 5.76 6 0.33 158 341 40 99 680 1063 5.76 7 0.34 163 341 40 99 680 1063 5.76 2.2 concrete mixture workability test The main factors influencing the working performance of high performance concrete is water-cement ratio, the dosage of the cementing materials and sand ratio, aggregate gradation, admixture of varieties and dosage, etc[7].
Table 2 Concrete mixture workability Serial number Water/cement ratio Slump/mm Extension degree/mm Out of time/s The slump after 1 h/mm After 1 h extension degree/mm Out time after 1 h/s 1 0.28 172 453 45 160 432 42 2 0.29 183 472 38 171 456 36 3 0.30 191 486 33 182 480 32 4 0.31 200 520 28 193 514 27 5 0.32 218 534 25 196 525 24 6 0.33 226 548 20 206 538 21 7 0.34 232 560 18 210 550 17 The table 2 shows that with increase water-binder ratio, concrete mixture workability, but water-binder ratio is too large, when the slump after the losses increase. 2.3 concrete mechanics performance test The main factors influencing the mechanical properties of concrete are water/cement ratio and the dosage of mineral fine admixture, followed by sand ratio and particle size of aggregate, etc.
Mechanical test results listed in table 3.

The literature [4] study that different mixing amount of carbon fiber has effect on the mechanical properties of concrete.
It can draw up the appropriate conclusions, which is carbon fiber can be effective in improving the mechanical properties of concrete.
On Mechanical properties and Micro Structure of Short Carbon Fiber Concrete Flexural Components[D].kunming University of Science and Technology.2009 [5] Understanding of Properties and the Mechanism of Short Carbon Fiber High-performance Concrete [J].
Journal of Fuzhou University(Natural Science Edition) . 2006,（05）,739-744 [10] Ke Kaizhan, Zhou Ruizhong, Researches on mechanical properties of carbon fiber reactive powder concrete[J].
Study on The Fracture Properties of Carbon Fiber Reinforced Concrete[D].

The physical properties were compared in terms of hardness, adhesion strength, corrosion, wear resistance, and thermo gravimetry analysis, etc.
Viscosity, film hardness, adhesion, bonding strength, wear resistance, and chemical resistance were test for mechanical property.
Pearson correlation of film thickness and gloss was -0.219 which is a value hard to explain the correlation exists between two factors.
Basic coating properties * NC : Nonvolatile contents Mechanical property.
Conclusions We investigated the effect of colloidal silica in the organic-inorganic hybrid coating on the physical and chemical properties.

The aim was to achieve a homogeneous structure and to evaluate the material's properties after mechanical alloying and sintering.
These agglomerates may contribute to porosity or uneven sintering, potentially affecting mechanical properties [21] [25].
Ma, Excellent thermal stability and mechanical properties of bulk nanostructured FeCoNiCu high entropy alloy, Mater.
Xie, Effect of Fe content upon the microstructures and mechanical properties of FexCoNiCu high entropy alloys, Mater.
He, Effect of Co element on microstructure and mechanical properties of FeCoxNiCuAl alloys, Acta Metall.

And we have analyzed and eliminated the errors which may affect the result of the hardness test to ensure the reliability.
At the same time, it summed up the causes of errors and the methods to avoid and reduce the errors during the Rockwell hardness test, and analyzed the hardness tester load, pressure head, the structure as well as the test sample roughness, shape and other factors which influenced the measurement results.
In this paper, a Rockwell hardness meter N80 oil casing hardness test is used as an indicator of the N80 casing mechanical performance of the mechanical properties of the N80 oil casing to inspect and analyze.
The hardness and other mechanical properties have a certain relationship, parts and other mechanical properties of the material. but due to the simplicity of the hardness test, during the test easily cause it the results have a greater change factors also will be changed, so it is very important for the study of the sources of error in the hardness test and for avoiding errors.
[6] LI Xiao-dong, Influence Factors on Rockwell Hardness Test Results, Heilongjiang Provincial Station for Test and Checkup of Farm Machinery, China, Physical Testing and Chemical Analysis, 4(2010).

However, their practical applications are limited by their poor surface mechanical properties.
As is well known, rare earth (RE) oxides are effective in grain refinement of many metallic alloys and thus improve the mechanical properties.
It is well known that the final growth morphology of a crystal is controlled by the following factors: (1) crystal structure; (2) thermodynamic properties such as interfacial energy and phase transformation entropy; (3) growth kinetics and mechanism; and (4) thermal and mass transportation in melt.
During solidification, the alloying primitive content C0, the temperature gradient of the liquid phase on solid-liquid interface G and solidification rate R are the chiefly influencing factors on crystal morphology.
[5] Tian Yong-sheng, Chen Chuan-zhong, Wang De-yun, Xu Ying, Lei Ting-quan, Analysis of the growth mechanism of TiC crystal and the mechanical properties of the laser alloyed layer on the surface of pure titanium, Laser Technology. 29 (2005) 113-116 (in Chinese)

Results and discussion Analysis of the morphology and mechanical properties.
Fig.6 The melt flow rate of different systems Dynamic mechanical properties of composites.
The present study analyzes the impact of carbon nanotubes DMTA added to move the mechanical properties of waterborne polyurethane analyzed.
DMTA and SEM as well as the analysis of  the results of mechanical properties completely consistent.
Conclusions Elastomers and CaCO3 uniformly dispersed in the matrix, and has a strong interaction between the two-phase interface; join elastomers exhibit better mechanical properties, while improving the processing flow of the material; CaCO3 polymerization can join network structure becomes stronger, but also make the system viscosity increases affect the mechanical properties of materials; after adding elastomer and CaCO3, the system appeared low internal friction peak tanδ2 peak and peak shape widens, enhanced.

The main disadvantages of these cermets are their relatively poor mechanical properties and wear resistance mainly caused by their coarse-grained structure (the carbide grain size is usually over 4 μm).
Sintering temperature and time are among the most important factors determing the structure and properties of Cr3C2-Ni cermets.
Decreasing the carbide grain size allows to increase the mechanical properties such as hardness and transverse rupture strength and wear resistance [8].
a b Fig. 3. a – microstructures of Cr3C2-Ni cermets prepared by SPS; b – liquid phase sintering (2000× Mechanical properties.
Yuga, Production, mechanical and tribological properties of layered composite materials based on a chromium carbide alloy, Powder Metall.

Analysis model for stability of post-earthquake embankment (filled-subgrade) with cracks was established to determine the impact significance of influencing factors.
Where γw is the bulk density of water, hc is the depth of crack. 2.2 Parameter combination Factors affecting stability of fill subgrade within cracks can be concluded to subgrade geometry, the physical and mechanical properties of subgrade soil, foundation conditions and the crack properties.
The factors considered in the stability analysis are shown in Table 1.
Table.1 Factors consideration in stability analysis of subgrade with cracks（Filled-subgrade） Consider factors Value of level 1 2 3 1 height of Subgrade (m) subgrade geometric parameters 8 20 30 2 width of Subgrade (m) 10 23 33.5 3 soil cohesion c(kPa) embankment physical and mechanical parameters 22 32 42 4 internal friction angle φ(°) 9 14 19 5 bulk density γ(kN/m3) 17.5 20 22.5 6 ground transverse gradient foundation conditions 0 1:5 1:2.5 7 crack depth (m) crack properties 2 5 8 8 crack location A2 B2 C2 9 crack width (m) 1 3 5 10 crack moisture conditions A4 B4 C4 2.3 Calculation method Different subgrade stability calculation methods are selected according to different working conditions referring to Highway Subgrade Design Specification: ①For flat slope subgrade (The foundation is the flat slope), the simplified Bishop method is adopt; ②For the steep subgrade (the foundation slope≥1:2.5), a common slice method (GLE) is adopt to calculate the overall stability along the steep
References [1] Ouyang Xiangqian Cut-fill subgrade slope stability study mechanical mechanism [D] Changsha: Hunan University, 2007