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Due to the inferior mechanical properties of recycled aggregates than those of natural aggregates in general [1~3], it is generally accepted that for concrete made with recycled aggregates (RA), compressive strength values are in the range of 0 to 40% lower than those of comparable concrete containing natural aggregates (NA), and other properties of interest like the tensile strength, flexural strength, shear strength, and modulus of elasticity are also typically inferior, while creep and shrinkage tend to be higher [1~3].
Table 1 shows the sources and properties of original (demolished) concrete of the RAs.
Testing methods Gradation, crushing value and physical properties of all coarse aggregates were tested according to Chinese standard JGJ53-92.
The mechanical properties of hardened concrete at 28 days were tested according to Chinese standard GBJ81-85 using 200-tonnes capacity compression- testing machine.
However, it can be seen that the regression constants A and B are different for the concrete made with different coarse aggregate, and both of them decreases with increasing the crushing value of coarse aggregate, which means that the strength of coarse aggregate is also an important factor affecting the concrete strength.

Cementite lamellae orientation in relation to the drawing axis, interlamellar spacing and shape of cementite inclusions were key factors.
Estimated values of the wire mechanical properties were compared with a real experiment.
The mechanical properties of the initial billet after patenting are given in Table 2.
Jiang, Microstructure and mechanical properties of cold-drawn pearlitic wires affect by inherited texture, Materials and Design, 79 (2015) 60-67
Matos, Microstructure and Mechanical Properties in Progressively Drawn Pearlitic Steel, Materials Transactions, 55 (2014) 93-98

China Email: wsmsuccess@163.com Keywords: Sheet metal forming; Air-bending; Springback; Finite-element method; Numerical simulation Abstract: In this paper, the influencing factors of springback for air-bending of sheet metal are introduced.
Quality amplification factor was set to 10. 
Figure 5 The influence of press amount of punch on springback 5) The influence of sheet properties on springback The influence of different sheet properties on simulation springback results is shown in Figure6.
Figure 6 The influence of sheet properties on springback 4 Method for controlling springback Influence factor of the springback was analyzed above.
International Journal of Mechanical Sciences, Vol. 51 (2009), p. 732-740

Introduction The interfaces between carbon fiber and polymeric matrices in composite play an important role in controlling some of the mechanical properties of composites [1].
The sizing layer as the additional phase drastically affects the final mechanical properties of composites.
The effect of emulsion type sizing agents on processability of carbon fiber and mechanical properties of carbon fiber/resin composites were investigated.
To obtain stable emulsion，the content of emulsifiers and other factors must be adjusted when the resin ratio is various.
But if the sizing rate is high, not only it is a waste of materials and increases costs, but also thick sizing layer may affect the interfacial properties of composites.

In addition, the AM parameters will affect the weld bead size, thus affecting the path planning of the forming process.
Mechanical and oxidation properties of Ti-xFe-ySi alloys, Mater.
Microstructure and mechanical properties of wire and arc additive manufactured Ti-6Al-4V, Metall.
Characterization of microstructure and mechanical properties of laser melting deposited Ti-6.5Al-3.5Mo-1.5Zr-0.3Si titanium alloy, Mater.
Williams, Paul Colegrove, Microstructure and mechanical properties of wire and arc additive manufactured Ti-6Al-4V, Metall.

In order to develop the properties of carbon nanotubes, it is necessary to understand their special mechanical properties.
The research on the mechanical properties of carbon nanotubes mainly focuses on the theoretical and experimental methods.
In theoretical research, researchers are devoting themselves to exploring the micro and macro mechanical properties and physical properties of carbon nanotubes in recent years [7-9].
The mechanical properties of carbon nanotubes under various external loads and influencing factors have been thoroughly studied, which provides an accurate theoretical basis for experimental research, and also provides theoretical support for the mass production of carbon nanotubes in industrial applications.
Elastic properties of C and BxCyNz composite nanotubes.

FE model of hot forging process under mechanical press was build based on Deform-2D, temperature and stress field of homogeneous hot forging die and FGM surface cladding hot forging die under mechanical press were compared.
High stress in the surface of hot forging die impression can become a important factor influencing hot forging die failure[2].
Different forging equipment has different load property and great different load distribution in hot forging die.
Workpiece material was steel 1035, die matrix was H13 (4Cr5MoSiV1); workpiece temperature was 1100˚C, preheating temperature of die was 300˚C, environment temperature was 20˚C; friction factor between workpiece and die was 0.3, Thermal conductivity was 11W/(m·˚C); forging equipment was 2000T mechanical press and upper die stroke was 16mm.
Thermal penetration depth of I zone indicated: die heat-affected zones were 2-3mm under impression surface during forging process.

However, it was noteworthy that the alloy composition and fabrication process strongly affect the microstructure and properties of the alloy.
In addition, the previous study has reported that the presence of defects such as cracks, pores, and SiO2 inclusions have been thought to be major factors affecting accelerated oxidation [4].
Several studies were carried out to enhance the oxidation resistance and mechanical properties of transition metal dicilicides by adding alloying elements [3, 5-6].
Hoyer, Structural properties of liquid Fe-Si alloys, Journal of Non-Crystalline Solid 306 (2002) 90-98
Venugopal Rao, Effect of small aluminum additions on microstructure and mechanical properties of molybdenum di-silicide, Intermetallics 7 (1999) 213-232

Welding processes used to build large stiffened structures, such as friction stir welding (FSW), are responsible for introducing geometrical imperfections, changing the material properties and adding residual stresses.
These factors can therefore affect the panel’s structural behaviour when subjected to compressive loads.
Numerical models can also account for some factors related to the welding process, not possible to include with analytical methods.
In this area, the influence (on the stiffened panels' strength) of the residual stresses, material properties modifications in the heat affected zone (HAZ) and geometrical distortions have been studied by several authors [1, 3-6].
It is generally accepted that the aforementioned properties mainly depend on the microstructure, the micro-hardness and, on a larger extent, the process induced residual stresses.

The adsorption effectiveness and their factors of Ni2+ in aqueous solutions were simulated detailed using the adsorbents of the sludge incineration residue.
The simulation contents and the factors included the adsorption time, the pH of solution and the dosage of adsorbents and so on.
The purpose of this study is to simulate detailed using the sludge incineration residue as adsorbents to removal the Ni2+ in aqueous solutions and the adsorption effectiveness and their factors were discussed.
The solutions were agitated by mechanical shaking at a speed of 100 strokes／min.
The parameters affecting the sorption process, viz. contact time, pH and temperature were studied.