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The contributing factors include long spans, slender and flexible designs, use of lightweight materials and low damping.
Response factors for the worst one second of weighted acceleration for a single day.
Figure 6 shows response factors for the worst one second of weighted acceleration (Eq. ) extracted from 30 minute long intervals on Monday, May 3rd, 2011.
The response factors reach the maximum values of up to nearly 40.
Quantitatively, response factors reaching up to nearly 40 were calculated, indicating a lively floor.

Statistical Characteristics Analysis of Critical Corrosive Ratio For the factors suffered during service have randomness [9,10], so the durability of the structure is a random process, then use of reliability methods to describe the durability of concrete structures is reasonable.
For the statistical parameters in critical corrosive ratio model (7), its statistical properties can be reflected by standard deviation.
Analysis of Main Factors. (1) Thickness of concrete cover As the protective layer thickness will be affected by the positioning technology of reinforced bar and human operations and other factors, so there are some errors.
Table 1 Concrete mix proportion Cement Sand Gravel Water FDN C20 1 1.9 3.39 0.55 C40 1 1.19 2.53 0.42 0.8% Cement The galvanostatic polarization accelerated corrosion method has been used on reinforced bars corrosion, where the power current density has been set as 0.01mA/mm2, at the same time the bending tensile strain of concrete has been test referring to the mechanical properties test method standards of normal concrete (GB/T50081-2002), and the measured first crack bending tensile strain of C20 and C40 concrete on 28d were 207and 227respectively.
Zheng,Time-Dependent Reliability Method to Assess the Serviceability of Corrosion-Affected Concrete Structures,Journal of Structural Engineering.131(2005)1674-1680

However the accuracy of on-line DGA results acquired by those on-line equipment needs to be increased, and there is no coherent standard for on-line DGA results [3].As on-line DGA results can be influenced by many factors in which the temperature influence must be considered, for the reason that on-line system is running for the filed tests [4,5].
The transport properties of gases for a plane membrane selected in this work were determined by a nonlinear least-square regression of the exponential growth function [6]: Ci=Cimax[1-exp(-bt)]
These tests were done to establish the permeation transport properties of the membrane and the gas cell, or b which is the slope of the portion of the curve corresponding to the steady-state permeation rate and t99, which is the time taken by each gas to reach 99% of its equilibrium concentration[8].
So, the concentrations of gas need to be re-estimated with many factors.
Conclusions Accuracy of on-line DGA results can be affected by certain circumstance in the filed tests, where temperature, no matter oil temperature or ambient temperature, is a major influencing factor.

The kinds and the properties of composite materials and superhard cutting-tool materials are introduced in this paper.
It is made of two or more materials whose mechanical, physical and chemical properties are completely different.
The properties of reinforced materials are listed in Table1.
The Kinds and Properties of Superhard Cutting-Tool Materials Natural Diamond．Its code name is ND.
That is I=ｍv2－ｍv１ (5) So, we can see, the factors that affect machinability of particle reinforced composite materials and harming for cutting tools are as follows.

The properties of UHPFRC specimens, cured by steam curing at 90oC, are investigated.
Recent research has shown that distribution and orientation of the steel fibres in UHPFRC can have a considerable effect on its mechanical properties [5][6], similar to the effects observed for normal steel fibre-reinforced concrete [3].
Paste volume in concrete is also a main factor influencing the shrinkage.
A, “Relationships between fibre distribution, workability and the mechanical properties of SFRC applied to precast roof elements”, Materials and Structures, 2006, pp. 411-420
GS, “Effect of filling method on fibre orientation & dispersion and mechanical properties of UHPC”, Proceedings of Second International Symposium on Ultra High Performance Concrete, Kassel, Germany.

A methodology for discrete simulation has been developed that incorporates many structural characteristics of polycrystalline material properties, such as: texture, grain boundaries, microstructure, phase composition, chemical composition, stored energy, and residual stresses.
The proposed model can help researchers and engineers to understand the physical mechanism of oxidation in order to predict material behavior and optimize material processing and properties.
The oxide film formed on the pressure tube surface is a good protective barrier against further oxidation and hydrogen ingress, both of which have a deleterious influence on the mechanical properties of the Zr-2.5% Nb alloy.
The oxidation process and hydrogen ingress are inward diffusion processes that are significantly affected by the oxide texture and microstructure.
The formation of oxide texture and microstructure is affected by many factors that are different from metal to metal.

Through mixing different amount of waste asphalt concrete, fiber and fly ash, to study how those factors improve the crack resistance of waste asphalt concrete fiber cement stabilized macadam materials on the basis of having no affect on its mechanical properties, so as to adapt to the requirements for material anti-cracking performance of engineering construction.
The general situation Experimental Scheme The crack resistance of waste asphalt concrete fiber cement stabilized macadam is a comprehensive performance that affected by multiple factors.
Such as cement, fiber, waste asphalt concrete and fly ash all can influence the crack resistance of waste asphalt concrete fiber cement stabilized macadam in different degree, in consideration of so many influencing factors, using orthogonal test can find the main controlled factors and its influence rules.
Considering the 4 factors above and each factor in 3 levels, then arranged 16 groups tests according to orthogonal table, shown in table 1, through water content test and drying shrinkage test to determine and analysis the influence of above factors against crack resistance.
Cement is the second order of the effect of moisture content and dry shrinkage property of materials among the four factors and is good for dry shrinkage property.

The difference in NaOH concentration affects the characteristics of the xylan colour produced.
The value is obtained by taking the average value of each test because the values obtained are not uniform due to uneven paper thickness factors as well as the low density of paper, so that when data collection causes differences in results.
Factors that affect the strength of the tear is the bond between the fibre and the level or the length of the grinding length of the fibre, the longer the fibre, the lower the tear strength, because long fibres have low flexibility [9].
References [1] Dienes, D., Effect of cellulase enzymes on secondary fiber properties.
[4] Deutschle, A.L., Römhil, K, Meister, F., Janzon, R., Riegert, C., Saake, B., Effects of cationic xylan from annual plants on the mechanical properties of paper, Carbohydrate Polymers, (2014) Vol. 102, 627-635

However to the best of authors’ knowledge, this will be the first study that considers the viscoelastic behavior of thin plates of uniformly varying cross-section, using four-parameter mechanical model to simulate the viscoelastic behavior.
Four-nodded linear rectangular master element as illustrated in Fig. 2 is used with a parent shape function After simplifying the functional with respect to nodal variables, the element matrix includes the variable cross-section properties of the viscoelastic plate is derived.
Due to the symmetry, the computations are carried out for a quarter of simply supported plate as illustrated in Fig. 3 with the following geometric properties: Length of the plate = 4 m, Width of the plate = 4 m.
The following material properties are used: E = E1 = 3x107 kPa, η = η1 = 3x107 kPa s, Poisson’s ratio ν = 0.3.
This ratio is one of the most important factors affecting the viscoelastic behavior.

However, the high water content and biological gel structure properties of sludge lead to difficulty in dewatering.
Traditionally, the excess sludge is conditioned to improve its dewatering properties, and then dewatered by mechanical force.
The properties of the sludge samples as the following: SRF (1.18 ± 0.10) ×1012 m.kg-1; water content (98±0.50) %; pH 6.9 ± 0.02. 2.2 Coal fly ash modification The coal fly ash used in this study was obtained from Chaohu Power Station in Anhui, China.
Effect of EPS on the SRF of sludge EPS concentration is widely studied and is thought to be one of the most important factors affecting sludge dewaterability [10].