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The interdependence of many factors creates difficulty in isolating causes and effectively predicting shrinkage.
The key factors affecting the magnitude of drying shrinkage are aggregates, water/cement ratio, member size, ambient conditions, admixture and cement type. [4].
Materials properties The optimum water content from the field application were adopted for laboratory experimental consists of 8.4%, 7.9% and 7.8% water content.
Various laboratory test were conducted to determine the physical properties of RAP.
Drying Shrinkage Drying shrinkage properties of cement treated recycling base were measured with the aid of Demec points, attached 200mm apart, on two faces of each 10 ´ 10 ´ 25 cm prismatic specimen.

Silicone rubber is excellent special rubber which has fairly stable mechanical properties in a wide temperature range (-50 ˚C to 200 ˚C).
Dynamic mechanical properties of PVMQ/IIR foams In the development of damping materials, the damping capacity is the focus of attention.
The damping properties not only depend on the materials themselves, but also change dramatically with the change of external factors.
There have on sufficient attention to the non-linear characteristics of the damping structure, in particularly the effect of the prestressed, the level of mechanical vibration and other factors on the dynamic characteristics of the damping structure.
The damping properties of the rubber damping materials depend on external factors such as temperature, frequency, strain amplitude (vibration magnitude) and the changes of pre-compression, in addition to the composition and structure of the materials.

This characteristic is generated for abaca fibre properties.
The improvement of mechanical properties of fibres can be achieved by treatment and coupling agents and in this study, impact modifier and coupling agent (maelic anhydride (MAH)) are used in composites and the statistical analysis of hardness property at various composite compositions were carried out.
Standard specimens with load 17.5 kg were prepared for the determination of Brinell hardness number (BHN) properties.
The responses of three factors are to be determined and these three factors are designated as Χ₁ (abaca fibre), Χ₂ (maelic anhydride (MAH)) and Χ₃ (impact modifier (IM)), respectively as shown in Table 3.
The ANOVA analysis indicates a linear relationship between the main effects of abaca fibre wt% maleic anhydride wt%, and impact modifier wt%, and the quadratic relationships with factors of abaca fibre wt%, maelic anhydride wt%, and impact modifier wt% and interaction between the three factors.

The properties of the soft matrix, interphase and rigid particles (size, shape, material properties) can have a significant effect on the global behavior of the composite.
The presence of the interphase between particles and matrix can significantly change the final global mechanical properties of the composite.
A micro-crack of length corresponding approximately to the distance between the particles was modelled and the corresponding values of the stress intensity factors KI and KII and consequently the angle a were calculated.
Consequently, the global behavior of the polymer particulate composite is affected too.
This effect is strongly material properties of matrix and interphase dependent.

The influence factors including the reaction temperature and the introducing model of monomers were investigated.
Studies have shown that polymers containing fluorine and silicone have hydrophobicity, low surface energy, chemical corrosion resistance and other properties.
Gypsum used in this work is commercial calcined gypsum powder and its properties are shown in Table 1, which are up to the standard requirements of GB9776-2008 Calcined gypsum .
Gypsum samples were prepared and tested with reference to the standards of GB/T17669.3-1999 Gypsum plasters-Determination of mechanical properties, GB/T17669.4-1999 Gypsum plasters-Determination of physical properties of pure past and JC/T698-1998 Gypsum blocks.
Taking the above factors into consideration, the reaction temperature should be controlled at the range of 75~80℃.

During carbonization process, the thermal stress concentrates on the relatively weaker fiber / matrix interface, which result in decline in mechanical and thermophysical properties [4].
On the other hand, it will cause decrease in the viscosity coefficient of the mesophase pitch, and foam in some extent, both of above factors affect the crack generating in the carbonization process.
Compare with C140, C170 has lower fracture energy because excessive pre-oxidation temperature affect the MP rheology, MP viscosity, and stickiness properties finally resulting in lower fracture energy.
Conclusions (1)Pre-oxidation treatment of MP affects properties and microstructure of 2D C/C composites.
Mechanical properties investgation of carbon/carbon composites fabricated by a fast densification process.

The foundation of agglomeration is liquid, whose properties and quantities influence the index of yield.
The concept of the bonding intensity is proposed, whose influencing factors are analyzed, to provide the theory basis and technical support for efficient use of iron ores.
The bonding intensity affects the sinter mechanical strength directly, further influences the sinter yield and quality indicators.
After melting, the liquid generating by adhesion, on one hand, melts and corrodes on the surface of core ores to change liquid properties on the contact interface.
The higher ratio explains that the factors prejudicing the consolidation are leading.

Effect of Plasma Spraying Gas on Microstructure and Properties of 95vol.
To determine the effect of plasma spraying gas on microstructure and mechanical properties of Al2O3-SiC nanocomposite coatings, primary Ar gas and secondary H2 gas were chosen, which have an effect on temperature and velocity of the flying powders at the time of impacting on substrate.
The particular interest in nanocomposite powders has been driven by reports that the addition of nanosize SiC particles into an Al2O3 matrix can significantly improve the mechanical properties over those of monolithic Al2O3 [1-2].
The properties of ceramics are in general controlled by the microstructure and by the processing.
Summary Ar gas significantly affected plasma sprayed 95vol%Al2O3-5vol.

Such deterioration / failure modes are hence surface properties sensitive.
The SMAT results, particularly for the as-SMAT samples indicate that a factor other than grain size may be influencing corrosion initiation properties.
The distinct separation in corrosion behaviour of the ECAP specimens, despite having grain sizes only marginally smaller than those of the heat treated CAST and SMAT specimens, indicates that grain size may not be the only factor in tailoring corrosion properties through thermo-mechanical processing.
This speaks significantly to the utility of the effect of grain size and processing treatment to be a key factor in tailoring the corrosion properties of a metal / alloy.
This finding opens up interesting new avenues for improving corrosion properties of Mg by ECAP while at the same time enhancing its mechanical properties

As the formation pressure declines the stress around borehole changes, and then collapse pressure and fracture pressure are affected.
In directional wells drilling, the wellbore stability is affected not only by formation coefficients such as stress and strength but also by drilling deviation and azimuth.
While the borehole stability is better when drilling to direction of minimum horizontal principle stress. 4) In this study the effect of stress variation on borehole stability was considered as only factor.
It is suggested that other factors such as variation of formation physical and mechanical properties should be taken account for further analysis in borehole stability of directional wells.
Mechanical mechanism of borehole instability in drilling engineering.