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Specimen size was consistent with standard mechanical tests, which recommend that specimen size should be ten times larger than grain size.
Pore space between grains is substantial, explaining the high values found for (interparticle) porosity, determined using MIP.
Pore size distribution in rocks is unimodal (rocks consisting of well sorted grains) and their porosity (17.59-32.32%) is lower than the studied mortars.
The rock porosity is associated with a fine grained matrix.
However, further research into the proposed methodology is needed, increasing the number of different materials (ancient mortars, bricks, rocks, etc.) and properties (strength, porosity, mineralogical composition, grain size, etc.) and the number and size of specimens.

Introduction Long distance, a large number of natural gas, petroleum, conveying pipe the pressure produced very big.
Table 2: Test steels test conditions Sample opening rolling temperature final rolling temperature final cooling temperature control technology cooling rate 1# 1100 820 590 water 20 2# 1100 820 430 water 20 3# 1100 820 340 water 20 4# 1100 820 260 water 20 Rolling control is the main purpose of phase change process, by controlling the heating condition in austenite matrix is introduced in the high density of the ferrite nucleation sites, including the austenite grain boundary, and the thermal deformation and excitation of the twin interface and deformation belt, thereby thinning after phase transformation microstructure.
Controlled rolling controlled cooling after the introduction, the purpose is to control the phase change type, grain refinement and the control of precipitation, improve the strength and toughness.
The data shows [2], for X80 pipeline steel research suggests that start cooling temperature is higher, the cooling speed more quickly, the bainite and ferrite number, yield strength and tensile strength is high, comprehensive performance is better.
Sample versetzung precipitation analysis Take yield ratio top 2 sample and yield ratio minimum of 4 sample of TEM was observed, figure 3 gives 2 sample and 4 sample TEM typical morphology as wrong configuration, as shown in Figure 3a, 2 samples were observed under the microstructure of acicular ferrite under transmission electron microscopy also has a straight grain boundary, intragranular versetzung low density versetzung by grain boundary and sub-grain boundary limits small, versetzung delivery motion resistance is very small, in addition, also observed the versetzung line less fine precipitates distribution, does not form on the versetzung pinning and hinder the versetzung movement.

,,where is the logarithmic decrement of the amplitude that is or more accurately,where n is the number of vibrating., and are the vibration amplitude at n, n+1 and n+m cycles, respectively.
The mechanical properties of the boundaries between grains and sliding bands in metals were investigated using anelastic measuring method.
The internal friction peak resulted from grain boundary that is a function of temperature was observed for the first time.
The relaxational activation energy of grain boundary is measured.
Ke: Foundation of Internal Friction Theory in Solids (Grain-boundary Relaxation and Grain-boundary Structure), Academic Press, Beijing (2000)

Table 1 Comparison of three open/closed techniques Classification Threshold Energy Optimization Time Need Stochastic Strategy No Much Little Timeout Strategy Yes Middle Middle Predictive Strategies No Little Much The open/closed technology is generally divided into coarse-grained and fine-grained in accordance with the particle size.
Coarse-grained given application refers to predetermine the number of processing units required for it, without regard to the specific process in the processing unit to perform a state transition.
Fine-grained tasks that are considered state of the implementation process of a specific period of time resource conversion.
Due to the presence of the virtualization layer, the traditional fine-grained power management technology can not be applied directly to a virtualized environment.
The above algorithms are based on reducing the number of servers as targets.

Component ratio may vary in a wide range and depends on many factors: the size of the dispersed phase (particle size, specific surface area), the surface quality of the dispersed phase (number of adsorbed gases and water), thermoplastic bond properties, temperature of preparation and casting of slip [3, 4].
To evaluate powder grain size distribution studies have been carried out with the laser diffraction particle size analyzer SALD 7101.
Grain size of aluminum nitride is from 2 to 7 μm, the size of the secondary phase (yttrium aluminium garnet) ranges from 1 to 5 μm.
One may see on micrographs that conditions being necessary to achieve the high thermal conductivity are met: the direct contact between nitride grains; size of aluminum nitride grains; position of the secondary phase, cleaning of nitride grains from oxygen impurities and bonding it in yttrium aluminium garnet.
Acknowledgment The work is performed within the framework of realization of the program of improving competitiveness of National Research Tomsk Polytechnic University among the leading world scientific and educational centers: "Materials for extreme conditions" number: LRU IHTP 85-2014.

Its fineness module was 2.8 and has fine grain size distribution which was moderate degree.
The main technique index are listed in table 3 and the grain size distribution are listed in table 4.
The main technique index are listed in table 5 and the grain size distribution are listed in table 6.
Table 4 Grain size distribution of fine aggregates Size of wire mesh(mm) 4.75 2.36 1.18 0.6 0.3 0.15 <0.15 Single screen tailings(%) 3.5 12.6 20.9 20.7 22.6 15.1 4.6 Grand total screen tailings(%) 3.5 16.1 37.0 57.7 80.3 95.4 100 Table 5 Main technical index of coarse aggregates Clay-content (%) Crush indexes (%) Percentage of flat and elongated particles(%) Apparent density (kg/m3) Bulk density (kg/m3) Water absorption (%) Voidage (%) 0.5 7.9 2.7 2720 1430 0.8 42 Table 6 Grain size distribution of coarse aggregates Size of wire mesh(mm) 4.75 9.5 16.0 19.0 26.5 31.5 Single screen tailings(%) 9.6 16.7 20.5 24.6 22.8 2.9 Grand total screen tailings(%) 97.1 87.5 70.8 50.3 25.7 2.9 Mix design The quantity of fly ash amount are 30%, 40%, 50% respectively, each mixing concrete group were tested by meeting above standard, if this can not meet the demand, using appropriate sand ratio, adjusting admixture.
Considering that the scheme not only economical, but also practical, take Numbers 2 as experimental mix proportion.

Characteristic fatigue striations in Be grain interior of BeAl-700 can be seen while BeAl-900 has many interlaced strips along the interfaces between Be and Al phase.
In their study, a combination of dislocation strengthening with grain boundary strengthening mechanisms was proposed to explain the strength levels observed in the Albemet 562 material.
The benefits of using powder metallurgy process as the fabrication method over traditional casting and hot extrusion are that fine-grained BeAl materials could be obtained.
When Be and Al are mixed and pressed together, it is of great practical importance that slip mechanisms in fcc Al allow blunting of basal cleavage cracks in Be grains.
Characteristic fatigue striations (marked by an arrow) in the Be grain interior of BeAl-700 can be seen in Fig.6(b), BeAl-900 has many interlaced strips along the interfaces between Be and Al phase as shown in Fig.6(a).

Considering large number production of the abandoned tyres and the question of the concrete with mixture of crumb rubber，the mainly task of this paper is to study the mechanical properties of different mixing ratio concrete with vary volume of crumb rubber.
Introduction Adding crumb rubber into concrete, on one hand it can give out a new way to recycle the big number of the abandoned tyres and rubber goods.
In this paper we studied the development of the strength, the deformability, the wearing capacity etc of the crumb rubber concrete (CRC). 1 Raw materials and methods 1.1 Raw materials Natural sands: coarse sand, fineness modulus=3.1, moisture content=2.4%; fly ash: second class powered fly ash; cement: P.O42.5 Table 1 The indexes of cement Test items Water requirement Initial setting time Final setting time invariability Bending strength（MPa） Compressive strength (MPa) 3d 28d 3d 28d results 27％ 115min 175min eligible 4.96 8.69 22.0 44.8 Coarse aggregate: crushed stone, the maximum grain size=25mm, Crumb rubber: the broke up of the auto tyres, grain size=2~3mm; Super plasticizer: high efficient naphthalene water reducing agent, water reducing ratio=20%; 1.2 Mixing ratio of test Table 2 Mixing ratio unit：(kg/m3) number Cr% Cr C F S G W AD W/B B1 10% 28.35 350 150 638 978 170 10 0.34 B2 15% 42.52 350 150 603 978 170 10 0.34 B3 20% 56.70 350
Table7 The mixing ratio of anti-cracking experiment unit:(kg/m3) number C W Fa Cr S G AD 1 350 170 150 56.70 652 978 10 2 350 170 150 0.00 709 978 10 Table 8 The crack situation of benchmark concrete after 24hours length（cm） 1 2 2.3 2.5 3 3.5 4 4.5 5 6 7 7.5 8 10 16 number 6 8 1 6 4 2 5 1 6 3 1 1 2 1 1 Table 9 The crack situation of rubber concrete after 24hours length（cm） 1 1.5 2.3 2 3 2.5 3 4 7 5 8 8 16 number 1 1 1 2 4 4 5 4 6 2 1 1 2 1 1 The condition is midday of summer and temperature is 37℃.
It can improve the deformation of the concrete. 2.6The wear resistance of CRC Table 10 Mixing ratio of wear resistance unit：(kg/m3) number C W Fa Cr S G AD B1 350 170 150 28.35 638 978 10 B5 350 170 150 0.00 709 978 10 Table 11 The data of wear resistance number weight after pre-grinding of 30 turns (g) weight after grinding of 40 turns (g) loss of weight (g) loss weight of per unit area （kg/m2） B1 7921.67 7914.60 7.07 0.565 B5 7871.47 7860.27 11.07 0.885 From Table 11, it can be seen that the mass loss of benchmark concrete and the CRC is 7.07g and 11.07g during the pre-grinding 30 turn and 40turn respectively.

The grain size of synthesized ferrite powder was increased from 4.20 to 5.11μm as shown in table 3.
For Co0.60Cd0.40Fe2O4 composition, the grain size was found to be large.
Thus, the growth of grains was accelerated with an enhancement in Cd concentration.
Average grain size values for Co1-xCdxFe2O4 ferrites.
Tetrahedral, octahedral, spherical agglomerated grains ware obtained from SEM micrographs.

Meanwhile, the number of the fine eutectic structure increased.
The lamellar α is obviously refined and the phase boundaries become more straight, the number of eutectic structure increases and more uniform distribution as well when the superheating time is increased from 5min to 10min.
That is to say the number of fine-uniform (α+ε) eutectic structure increases by extending superheating time.
However, ε phase of the whole sample has a basically consistent grain size of about 1-3µm in diameter.
With the improving of superheating degree, prolonging of superheating time, increasing of cyclical times and cooling velocity, the grain size of primary ε decreases as well as the amount of fine eutectic structure increases and more uniform in distribution