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The rate of hydration is also affected by cement fineness.
Discussion The described effects obtained when studying microfine cements hydration compared with OPC could be explained by the influence of the two main factors.
Early-age properties of cement-based materials.
Important properties of an ultrafine cement - Part I (2001) Cement and Concrete Research, 31 (1), pp. 119-123
The influence of ethanolamines on the hydration and mechanical properties of portland cement (1996) Cement and Concrete Research, 26 (5), pp. 701–705

As buried structures, a variety of factors influence the soil pressures on culverts.
In spite of the fact that they have potential values, the determination of loadings on culverts associated with a variety of influencing factors in designs still confronts many difficulties, a simple approach which uses the weight of soil column on a culvert as loading has to be widely applied in most designs.
Previous researches have shown that the primary factors influencing the load on structure are governed by the magnitude and direction of settlement of soil prism above the top of the culvert relative to settlements of the adjacent soil prisms.
The fluctuation of earth pressure coefficient in Fig.2 was mainly attributed to the heterogeneity of physical and mechanical properties of filling in the actual construction process, however, the results still has an useful engineering meaning in this field experiment.
Comparison of Finite Element Modeling with the Experiment Results In order to assess the validity of the soil modeling technique adopted in this study, an example that the dimensions and material properties were equal to that in the field experiment was analyzed.

This property was observed for various metals and for grain size as large as 300 nm [1].
Stress relaxation experiments The stress relaxation consists in interrupting the sample loading during a mechanical test (in compression in the present study).
With γ& the plastic shear rate, τ the applied shear stress and M the combined modulus of the sample and the testing machine, the general equation for stress relaxation is: M τ γ & & −= (1) The activation volume is the first order parameter of the Taylor expansion of the activation energy, which in the expression of the shear rate gives, with * F∆ the activation energy, eτ the effective shear stress, k the Boltzmann constant and T the absolute temperature:       −∆ −= kT VF e * * 0 exp τ γγ && (2) Combining relation (1) and (2) one obtains for the relaxation process the shear stress variation 0τττ −=∆ , as a function of time (with 0τ the stress at the onset of the relaxation) following a logarithmic relation, with C a time factor: )1ln(* C t V kT + Ω =∆τ (3) * VΩ is the apparent activation volume, whereΩ is a the correction factor depending on an athermal strain hardening rate K function of the relaxation
conditions, an immobilization factor β related to the dislocation density and M : )1()1( β+×+=Ω M K (4) Fig. 1.
These results indicate first, that the metal properties are not strongly affected by the strain history.

In the vehicle running process, the load size and nature of its components bear was affected by many factors.
(2) In the running process, the interaction force between wheel and road surface changed constantly, these changes were related to road surface shape, size of roughness, the inertia and the elastic properties of vehicle parts.
According to the maximum dynamic load (5) where kd - dynamic load factor
(6) The safety factor n is (7) (5) Driving force analysis Starting from the analysis of electric vehicle force, which is the basis of analyzing performance of a vehicle.
Li: Mechanical Research & Application, (2012) No. 1, pp. 4-6

However, the deleterious effect of hydrogen on the physical and mechanical properties of the pipeline steels needs to be carefully investigated and predicted to ensure safe and reliable pipeline operation under hydrogen pressures in both static and cyclic loading conditions.
The influence of hydrogen on the properties of current pipeline steels depends on the kinetics of absorption, the diffusion rate and the complex interaction of hydrogen with microstructural features present in the steel.
The Cellular Automaton (CA) technique has been used to predict the property degradation of microstructures with various properties (e.g. different grain size) under a given hydrogen embrittlement condition.
Previous work has shown that average grain volume (or average grain diameter) is a significant parameter affecting or controlling hydrogen diffusion because grain boundaries play a twofold role regarding hydrogen diffusion in the microstructure [6].
A 2D space with the given properties should be occupied by the diffusing hydrogen atoms.

Small Punch (SP) testing is an innovative test method utilised to assess the mechanical properties of small volumes of material.
As such, the SP technique would offer an ideal approach for characterising the mechanical properties of PB-DLD material.
The effects of build orientation on PB-DLD C263 microstructure and resultant mechanical properties through SPT testing are also evaluated.
Shklover, Texture, anisotropy in microstructure and mechanical properties of IN738LC alloy processed by selective laser melting (SLM), Mater.
Morris, The Influence of Grain Size on the Mechanical Properties of Steel, 2001

Various factors that may be potentially responsible for the strength enhancement of metallic foam are discussed as well as testing methods using large diameter Nylon pressure bars in SHPB set-up and experimental results are presented in Section 2.
As the attenuation coefficient is also affected by the geometric effect, it has been proved [14] that such an approach gives wrong results.
International Journal of Mechanical Science 30 (3-4), 273292
International Journal of Mechanical Science 26 (11-12), 689-701
An investigation of the mechanical properties of materials at very high rates of loading.

The product should be designed so that it is reliable against uncontrollable environmental factors
Workpiece as the rebar diameter is 35, and the mechanical and chemical characteristics are given in tables 1 and 2: Table 1.
Mechanical properties of Titanium Alloy Ti-6Al-4V Elongation (%) Hardness (HRC) Tensile Strength (MPa) Yield Strength (MPa) Reduction in Area (%) Elastic Modulus (GPa) 14 36 993 924 30 113.8 Table 2.
The estimated S/N ratio using the optimal level of the process parameters can be calculated as [1]: (4) Where is the total mean of the S/N ratio, the mean S/N ratio at the optimal level, and the number of the main design parameters that affect the performance characteristic.
[3] Ashish Yadav, Ajay Bangar, Rajan Sharma, Deepak pal“ Optimization of Turning Process Parameters for Their Effect on En 8 Material Work piece Hardness by Using Taguchi parametric Optimization Method” International Journal of Mechanical and Industrial Engineering (IJMIE), ISSN No. 2231-6477, Volume-1, Issue-3,2012

The dynamic responses of platform are affected by the temperature change, and it is essential to consider thermal effect when analyzing compliant mechanisms.
The change of temperature not only changes the material properties of the structure, generates thermal stress in the structure, but also changes the natural frequencies of the structure.
Deformation and stresses are produced not by mechanical forces alone, but by temperature variation as well [13].
The thermal stress caused by heat is likely to be the decisive factor.
Higher speed, more sophisticated, lighter weight, and higher power tend to promote the development of the mechanical dynamics, asking for a more accurate and true method reflecting the reality of the dynamics analysis [14].

The intensity and repetition of these loads lead to the degradation of mechanical strength properties.
The mechanical properties of the plate are as follows: Young’s modulus E = 69 GPa, Poisson’s ratio n = 0.35, the yield stress σy= 243 MPa, the ultimate stress σu= 347 MPa and the elongation A% = 21.85%.
Table.1 gives the elastic mechanical properties of composites patch and adhesive.
Mechanical properties of Boron/Epoxy and adhesive [14,15,18].
Karbhari, Rehabilitation of Metallic Civil Infrastructure Using Fiber Reinforced Polymer (FRP) Composites: Types Properties and Testing Methods, 1st Edition, Woodhead Publishing, 2014