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The joint influence of raw mixture, the parameters of pressing and the conditions of hardening on the indicators of material properties has been investigated.
There was given a quantitative assessment of the individual components contribution of the raw material composition to the indicators of the physical and mechanical properties of the material.
The prevailing factors, affecting the properties of hyper-pressed materials, are the consumption of Portland cement and the water-solid ratio of the molded mixture.
Ramli, Effect surface treatment of recycled concrete aggregate on properties of fresh and hardened concrete, 2013 IEEE Business Engineering and Industrial Applications Colloquium (BEIAC), Langkawi. (2013) 651-656
Ren, Experimental research on mechanical properties of recycled aggregate concrete, 2011 International Conference on Multimedia Technology, Hangzhou. (2011) 1539-1542

For anisotropic structures the resultant stress state due to curving are further affected by physical factors.
A further difference is represented by the need to assess the resultant stress state with a view to the secondary stress factors.
The resultant stress state due to curving are further affected by physical factors for anisotropic and heterogeneous structures.
Summary The anisotropy and the heterogenity of mechanical properties caused by short-fibre orientation and distribution in melt flow can influence the macro-mechanical behaviour of injection molded parts.
Sci., 1990, vol. 30, p. 957–96 [2] Gupta K., Wang K.K.: Fiber orientation and mechanical properties of short-fiber-reinforced injection-moulded composites.

Thickness of porous layer has little effect on the tribological properties of porous UHMWPE.
They found that the size, shape and content of the porogen in the molding mixture greatly affect the physical properties of the final porous sample.
Porous UHMWPE has porous structure, the mechanical properties is not as strong as normal UHMWPE.
But compare to other factors, the effect of thickness of porous layer is very small and negligible.
Thickness of porous layer has little effect on the tribological properties of porous UHMWPE.

Meanwhile incorporation of nanoclay MMT improved the tensile and flexural properties but reducing the impact properties. 1.
Many types of EVA properties based nanocomposites have been prepared by melt extrusion technique were reported and showed that the polar VA group in EVA can affect the dispersion and interaction of nanoparticles within EVA [5].
According to McCullen et al.,[8] MMT nanoclay has potential to improve the mechanical properties of the polymer matrix substantially even with a low level of clay loading.
One of the crucial factors to be considered for the preparation of polymer/clay nanocomposites is the optimum clay content that should be added because exceeding the optimum clay content will drop the mechanical properties due to the agglomeration of nanoclays at higher concentrations [8].
Carbon nanotube-polymer composites: Chemistry, processing, mechanical and electrical properties, Progress In Polymer Science 2010; 35(3): 357-401

Cellulose microfibrils were extracted from kenaf fiber by alkali treatments under various conditions to further characterize their properties and verify the factors which induce fiber degradation.
To further characterize the properties of natural fibers and verify the factors which lead to fiber degradation, alkali treatments between 6 and 9% NaOH under various conditions were applied to kenaf bast fibers.
Conclusion We have successfully verified that except at high concentration of alkali (> 6% NaOH), the alkalization method adopted is a very important factor in affecting the quality of fiber.
Widyorini and Soekrisno, Properties of the treated kenaf/polypropylene (PP) composites, Adv.
Goda, Effects of heat and alkali treatments on mechanical properties of kenaf fibers, Proc. of 16th Int.

The ultimate bearing capacity was deduced based on the unified strength theory, with some influencing factors analyzed as well.
In order to improve the mechanical properties of concrete filled square steel tube, set PBL shear connectors into the inner wall of the steel tube.
It can prevent local buckling of the steel siding, improve the mechanical properties of steel columns.
Influencing factors is the friction angle of concrete, it ranges between 30°to 50°.
Study of influence factors and formula for the bearing capacity of PBL shear connectors [J].

To control physico-chemical properties of such functionalized polymers versatile in practical applications, the nanoscopic structure of the materials should be clarified.
Examined was the effect of the side chain comonomers on the free volume hole sizes for the present polymers, in comparison with their mechanical property.
Previous study on mechanical property In a previous study [3], PPOH showed a considerably larger tensile strength than pure PP, in contrast to hydrophobic PPH (Fig. 1).
We conclude that proper controlling of the amorphous structure is one of the important factors to improve target mechanical properties for the present semicrystalline polymers.
Hagihara, Unexpected mechanical properties of functionalized polypropylene: tensile test, charpy impact tensile test, DSC, and WAXD analysis of poly(5- hexen-1-ol-co-propylene), Macromolecules 42 (2009) 2321-2323

The influencing factors of crawling (1) Crawling is associated with the properties of friction.
Among the mechanical transmission system, the stiffness of the whole system will be affected because of deformations of any transmission part, especially the last set of transmission part.
The main measures to avoid crawling All the influencing factors of crawling, the two main factors [5] are the difference between the static and dynamic friction of the moving parts and rigidity of transmission system.
It is often caused by passive components and the properties of friction from the surface of guide rail which guides the movement of passive components.
Electro-Mechanical Engineering, 2008(6)

Investigation of Phase Transformation of Forged Steel Cold Rolls Due to Heat Affecting and Prevent its Failure Ali Akbar Mottahedi Industrial Metallurgy and New Processing group Department of Advanced Materials and Renewal Energies Iranian Research Organization for Science and Technology (IROST) Forsat St. 71, Ferdoosi Sq., P.
However, the rolls which subjected to this problem have no mechanical defect to be detected by NDT, but these kinds of affected rolls may be failed in working (rolling) by fracture, spalling or cracks.
If the principal desired property was hardness or wear resistance, the part would be tempered below 200°C, else if the primary requirement was toughness, the part would be tempered above 425°C. [4] When plain carbon steel is heated in the range of 40 to 205°C (100 to 400°F), the structure etches dark and is sometimes known as black martensite.
Mechanical properties in this range are: tensile strength 88 - 140 kg/mm² (125-200 ksi), elongation 10-20 percent in 2 in. and hardness Rockwell C 20-40.
Depth, width and time of heating depend on the different factors in rolling process.

Compared with solid wire, flux cored wire is considered to be a high-performance electrode material which allows solving a wide range of problems in increasing the mechanical properties of a hardfaced layer [4].
Power and arc pressure are the main forming factors in the hardfacing process.
Geometric dimensions of the weld pool are influenced to a varying degree by many technological factors including a rate of shielding gas supply.
It increases the width of the pool and decreases the penetration depth (Fig. 2) so minimizing mixing with the base metal which positively affects the properties of the hardfaced metal.
These factors can limit an exposure time of alloying elements of the wire to high temperature.