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The testing results show that RSC possesses excellent workability, good mechanical properties along with abrasion resistance, little shrinkage, and strong bonding with old pavement, which can well meets the requirements of pavement rapid restoration under the condition of not closing airport.
Aggregate property parameters are illustrated in Table 3 and Table 4.
Based on repeated tests, this study synthetically analyses various factors such as concrete strength, workability and initial setting time etc., and finally determines RSC mix as shown in table 5.
Brittleness factors of RSC in table 7 are in the range of 6.6 ~ 7.8 and less than those of common pavement concrete, which are in the range of 7.0 ~ 9.0.
Table 7 Cpmpressive & splitting strength and brittleness of RSC at different age Age 2h 3h 4h 1d 3d 7d 28d Compressive strength [MPa] 21.5 28.2 30.5 39.8 42.8 46.0 50.6 Splitting strength [MPa] - 3.2 3.6 4.2 4.4 4.5 4.9 Brittleness factor 7.2 7.8 7.1 6.6 6.7 7.1 7.7 Table 8 Shrinkage ratio of RSC at different age Age 1d 3d 7d 14d 28d 60d Shrinkage ratio 1.36E-04 1.70 E-04 1.80 E-04 1.90 E-04 2.17 E-04 2.26 E-04 Conclusions Based on foregoing test results and analyses of this paper, the following conclusion can be drawn: RSC not only possesses rapid-hardening and early-strength characteristics as well as good mechanical properties, but also has excellent workability, good abrasion resistance, little shrinkage, and strong bonding with old pavement, which can well meets the requirements of pavement rapid restoration under the condition of not closing airport.

Therefore, the temperature is an important factor in the molding of biomass.
Considering many factors affect the accuracy of extrusion process, it is necessary to simplify the model appropriate treatment, and makes the following assumptions: (a) the initial straw materials room temperature is (20℃); (b) The thermal conductivity of air is small, ignoring convection; (c) Ignore the internal chemical changes in straw.
And thermal analysis directly related to the material properties includes: thermal conductivity, heat capacity, enthalpy, heat transfer coefficient, emissivity, heat rate.
The equation is: (1) The physical properties of the material parameters from the material is in Table 1.
Table 1 Thermophysical properties of materials Temperature[℃] Thermal conductivity [W/(m·℃)] Enthalpy [J/m3] 0 0.0025 55 50 0.006 100 100 0.012 130.2 150 0.016 162 200 0.014 200 Unit selection and meshing.

Hot forging die is provided in the service process is affected by the complicated and severe, its life is generally low, which directly affect the forging cost and quality and economic benefit of production units.
In hot die forging process and forging die mainly bear the mechanical load and thermal load of high intensity, the combination of the two, the die to produce all kinds of damage, the damage form seriously affect the work of forging die, even failure.
So, thermal load and mechanical load can be regarded as affecting the service life of hot forging die with the two most fundamental factors, under the condition of the mechanical load stability, thermal stress is the most fundamental reason of hot forging die failure.
The environment temperature is 300, Air convection coefficient 25.9611.Due to the heat pipe cooled hot forging die structure with temperature change range is larger, so in the process of calculation, it needs to consider the change of the temperature dependent material properties, boundary temperature and radiation boundary conditions and structure, so this is a typical nonlinear thermal analysis of the problems, this paper USES the finite element method for iteration solving structural model.
But to be sure, in the lower die of opening will weaken its strength and other mechanical properties, in under the lower die or mold base of open pore structure design, adopt tight circular honeycomb structure design can better reduce due to the impact of opening to the mold intensity[7].

Rating of the probabilistic component of fire risk material is quite complicated, since the probability of fire depends not only on the material properties, but there is a significant impact of human factors (similar ideas are presented in a scientific paper [5]).
Presented article will deal only with selected fire properties of the material which have impact on the likelihood of fire, without research the impact of the human factor.
For completeness it should be added that the comprehensive assessment of fire risk of certain materials (e.g. construction materials with static or fire separating function) is necessary to know the change of mechanical properties during fire.
In the case of wood and wood based materials their mechanical properties during a fire depend on the carbonization rate.
According to [19-20] is an important factor affecting the thermal resistance of wood and wood materials the density of materials.

At lower temperature, recrystallization reduces or vanishes at temperature ranging from 900 to 940 ℃ due to thermodynamics factors.
The recent researche finds that final microstructure and mechanical properties depend heavily on the process parameters such as temperature, strain rate and strain [1].
The designed maximum service temperature is up to 550℃, and moreover this alloy has good balance of mechanical properties.
This is because the growth of recrystallization grain needs the diffusion of atom, which is heavily affected by temperature.
At lower temperature, recrystallizations reduce or vanish at temperatures from 900 to 940 ℃, due to thermodynamics factors.

In addition, this hardener ensures the formation of materials with high levels of adhesion, mechanical properties, thermostability.
In works [16], the main methods of studying the mechanical properties of materials are given.
It should be noted that the last factor significantly affects the polymerization processes of the binder and is one of the determining factors in determining the optimal content of dispersed filler in the developed composites.
As a result, a polymer composite with enhanced mechanical properties was obtained.
This composite exhibits enhanced adhesive and mechanical properties.

Modification stage using mechanical activation of raw materials.
Best samples were tested on their sorption properties [16, 17].
As a result, carbonaceous fly ash is a sorbent with pronounced anionic properties.
The next stage of our work was to study the porous structure and sorption properties of modified carbonaceous products.
If a substance is absorbed by coal in the form of whole molecules, then these structural factors play a decisive role in the adsorption process, determining both its kinetics and the state of adsorption equilibrium.

Introduction Ti3AlC2 promoted comprehensive research activities because of its extraordinary mechanical, physical and chemical related properties.
Generally, residual stresses aggravate the possibility of structural components fracture, thereby, affect the mechanical behavior of the joints.
The residual silicon layer may deteriorate the mechanical properties of the joints, especially at high temperatures.
Increasing bonding temperature or holding time caused the microstructure of base material coarsening, which also deteriorate the mechanical properties of the joints.
So the interlayer thickness and bonding parameters are sensitive factors and should be determined appropriately.

Figure 3 Laser welding process and welded samples Effect of parameters on weld strength Optical properties of transmitting part.
In this section, the optical properties of the PC materials are investigated; the transmission measurement results are summarized in Table 1.
Figure 5 Welding 20~30mm/s, laser power 40W, slight degradation of the weld joint occur In figure (6) the results indicate that the welding speed is the most important factor affecting the welded zone width.
The main factor influencing the width of HAZ is the welding speed as the results indicated.
Benatar, Diode laser characterization and measurement of optical properties of polycarbonate and high-density polyethylene, ANTEC 2003, pp1056-10601990.

It's a key problem in the mechanical field that the machining stress and original stress redistribute in the workpiece when cutting.
This is the main factor to cause the workpiece distortion.
Because the effect of stress wave affects the stress distribution in the workpieces, which may destroy the geometric stability and physical performance of workpieces, the stress has become a wide concern in the mechanical engineering circles.
The entity mesh is plane quadrangle, which has such property as stability and high precision.
FEM Analysis of Cutting Sequenence Effect on Mechanical Characteristics in Machined Layer.