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Secondly, as for the evaluation index of liquefaction resistance, the relationship between maximum shear stress and (number of cycles needed for liquefaction) was commonly used.
Physical properties of tested soil Soil type Void ratio Specific gravity Relative density Particle size distribution Gs Dr D10 D50 D90 Cu Fujian sand 0.751 2.644 30% 0.17 0.23 0.50 1.47 Fig.5 Grain-size distribution of tested soil Test Plans.
Control parameters of each sample Type Sample number Dr CSR [kPa] [deg] T T-1 28.1% 0.26 16.12 - 6 T-2 27.9% 0.22 13.64 - 15 N N-1 28% 0.13 8.06 - 240 N-2 28.2% 0.18 11.16 - 89 N-3 27.5% 0.2 12.4 - 40 C C-1 27.5% 0.15 8.99 - 12 C-2 27.9% 0.13 8.06 - 17 E E-1 28.1% 0.14 8.47 -30 102 E-2 27% 0.16 9.80 -30 53 E-3 27.5% 0.18 11.16 -30 24 E-4 26.6% 0.09 5.58 0 510 E-5 27.7% 0.13 8.06 0 66 E-6 27.1% 0.16 9.92 0 30 E-7 26.9% 0.11 6.94 30 285 E-8 27.6% 0.14 8.47 30 116 E-9 27.6% 0.18 11.16 30 13 E-10 27.2% 0.16 9.92 60 41 E-11 26.8% 0.24 14.76 60 5 E-12 27.6% 0.13 8.06 90 98 E-13 27% 0.16 9.92 90 23 Test Results and Analysis Liquefaction Criteria and Test Results.
In this paper, the dynamic testing results of different stress paths clearly showed the relationship between CSR and number of cycles to cause liquefaction in semi-log coordinate could be represented by a straight line approximately, but different dynamic stress paths led to different characteristic lines.

In analyzing of the frequency characteristic of the image signals,the image edge, jumping parts and grain noises represent the high frequency component of the image signals.
The use of gray histogram analysis of the entire image graphically describes the number of different gray levels of pixels, the abscissa showing it’s gray level, the ordinate showing it’s e frequency (the number of the pixels).
Demand partial derivatives of a and b respectively, making them equal to zero, and we’ll get, (8) (9) Hence: (10) In Equation Set (10),, stand for the input and output datas obtained in the tests; n stands for the number of the data set for the test.

Tantalum in the RAFM steel plays an important role in lowering DBTT through its effect on prior-austenitic grain refinement [3].
Peak tensile stress at the half-life (i.e. at half of the number of cycles to failure) was taken as saturation or half-life stress and the cycle number corresponding to a drop of 20 % from the half-life stress was defined as fatigue life.
A comparison of fractographs of the samples tested at ambient and 823 K (550oC) temperatures indicates comparatively larger number of crack initiating sites at elevated temperatures, as illustrated in Fig. 5 (a) and (b).

Due to economic viability and technological factors, the welding method is limited in the maximum number of thickness transitions.
In the case of the tailor rolled products, the number of rolling passes required for wide profiles represents the main restriction [3].
The high solidification rate achievable in this process reduces significantly the segregation problems compared to other casting methods and results in a fine-grained and homogeneous microstructure [5].
Experiment number Profile depth Δhroll Minimum casting gap - h Profile slope β [mm] [mm] [-] E1 0.15 1.5, 1.7, 2.0 1:10, 1:20 E2 0.15 1.5, 1.2, 1.0 1:10, 1:20 E3 0.25 1.7 , 2.0 1:10, 1:20 E4 0.25 1.5, 1.2, 1.0 1:10, 1:20 E5 0.5 1.5, 1.7, 1.9 1:1 Numerical model.

Over the years, investigators tried to obtain accurate material characteristics under high impact loading with various experimental methods and come up with a number of material constitutive equations.
In order to obtain the material characteristics under high strain rate, a number of test methods have been proposed, one of which is using a Split-Hopkinson Pressure Bar (SHPB).
A number of common structural steels were selected for SHPB tests, i.e.
From various literatures, these effects are described as a result of grain internal friction during high strain rate deformation.

Winterwerp et al.[9], Alberle et al.[10] and Houwing[3] considered that an increase of density increased the number of bonds between the sediment particles and induced the increase of bed strength.
Table 1 Characteristics of sediment particle size Sample Content[%] Parameters of grain size sand silt clay D50[mm] Qdφ Skφ No.1 17.3 70.9 11.8 0.0377 0.78 0.22 No.2 13.1 66.4 20.5 0.0227 1.43 0.60 No.3 13.0 56.8 30.2 0.0164 1.82 0.56 Experimental instruments.
Butfor engineering practice, it is significant only when a large number of sediment is suspended to water.Therefore, in these experiments, the sediment incipient motion is defined as the sediment suspending generally and the concentration surveyed by the OBS increasing evidently.The experimental phenomena are as followed
While the clay content in the fine sediment sample is about 30.2%, and the number of bonds between the sediment particles are large which induce the increase of bed strength, resulting that it needs larger velocity of flow to lift the sediment.

Cylinder and measuring point’s number are shown in Fig. 2.
The number of residual stress in each side of top or bottom has decreased gradually in first three cylinders.
Oppositely, this trend was moved towards the contrary direction: There is a rapid increase in the number of residual stress in cylinder D.
The impact of variations in casting practice on grain size and stress level is envisaged for future studies.

Table 1 Sand testing results Fineness modulus Cl- content Mud content Clay content 2.7 0.006% 0.1% 0.2% The gravel used consisted of size varying between 5mm and 10mm in diameter, and it was the grain of granite. 2.1.3 Superplasticizer A polycarboxylate-based superplasticizer was used for all concrete mixes.
As to the ratio of two kinds of cements, it was also set to be a fixed number.
Conclusions 1) The proposed orthogonal experiment method in concrete mix proportion design has the capacity to reduce the number of trial and error, save cost, laborers and time.
In the meanwhile, the appropriate result is attainable. 2) A number of parameters have impacts on compressive strength and workability of concrete, for example, water-cement ratio, aggregate size, mud content of aggregate, etc., among which the dominant ones selected as factors are water-cement ratio, cement content, superplasticizer content and sand ratio. 3) Cement content and sand ratio are the most influential factors on slump and 10h compressive strength, respectively. 4) An optimized concrete mix for precast concrete members in building industrialization is determined. 5) The research of long-term properties of the optimized concrete mix is planned to be carried out in the future.

Paper elasticity parameters are studied and described in a number of publications [6–9].
On the surface of the test specimen, small (150–180 μm) grains of silicon carbide abrasive were poured for visualization of standing wave nodal lines.
Variable is the number of design variables .
The number of natural frequencies in objective function is .

This is due to a relatively small number of profile enterprises even on a national scale and uneven distribution across certain regions [3, 4].
Interest to this material from private producers is well marked by the number of Internet forums devoted to this issue.
At the same time the maximum possible number of ingredients (taking into account the compatibility factor) should be added during binder preparation [13-15].
Scheme of obtaining and using composite binder for the production of non-autoclaved aerated concrete Such approach: - solves the problem of the molding mass grain composition heterogeneity, which is particularly acute when using various local natural and technogenic raw materials (e.g. screening and crushing stone rocks, ashes, slag, brick masonry cuttings, concrete structures, etc.).; - ensures the distribution uniformity and the one-time commitment of work introduced in relatively small quantities, organic and inorganic additives (lime, gypsum, etc.); - simplifies molding mixture preparation procedure, reduces the probability of quality fluctuations due to possible dosing errors; - increases the adding components activity (portland cement in particular) due to their mutual mechanochemical activation.