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Fine-grained glass-ceramics obtained by crystallisation of vitrified coal ashes M.
These glass-ceramics exhibited fine-grained microstructures consisting of esseneite and nepheline crystals, with average size below 200 nm, homogeneously dispersed in a residual glassy matrix.
If the vitrification process is followed by adequate thermal treatments, it is possible to obtain glassceramics with chemical and physical properties suitable for a number of different applications as cladding materials (e.g. kitchen and laboratory benches, cooker plates, walls, roofs, floors) [4-6].
DTA was performed on powdered samples, with average grain size <45 µm, using a STA Linseis GmbH equipment.
Conclusions In this work, fine-grained glass-ceramics were produced by proper vitrification of coal fly ashes and subsequent controlled heat treatment of the glasses.

The limited number of studies has been carried out in the past to relate the minerology of aggregate with the asphalt mix performance.
The limited number of studies has been done to relate the minerology of aggregate with the asphalt mix [2].
Murunj rock is medium grained and granoblastic.
Well sorted grains show that the rock is deposited in uniform energy environment, angular grains shows that the transportation of grains are limited and is confirmed by presence of angular rock fragments.
About 45% of quartz grains show strong strain extinction, therefore the amount of deleterious constituents are not in safe limit.

However, there exists a limit for grain refining.
Quantitative analysis indicates that the average grain size of equiaxed ferrite grains is about 8~10mm.
A bainite packet composed of a number of parallel arrays of ferrite laths can be seen from the specimen finish-rolled at high FRT (≥850℃) (Figure 3(a)).
In the specimen finish rolled at FRT of 800℃, on the other hand, a little small bainite packets exist and the number of laths in a packet remarkably decreased by deformation in non-recrystallization region of austenite (Figure 3(a)).
Therefore, equiaxed ferrite grains could be obtained.

ABH101 consists of greenish light grey medium to coarsed grained sandstone from 24.5m to 31.5m in depth; moderately strong greenish light grey, spotted with white medium to coarsed grained sandstone from 31.5m to 44m deep; moderately weak to weak reddish siltstone from 44m to 50.5m deep.
ABH102 consists of moderately strong reddish light grey, spotted with white medium to coarse grained sandstone from 20.5m to 24.5m in depth; moderately strong reddish brown spotted with white medium to coarse grained sandstone from 24.5m to 50m deep.
Table3 List of joints of Borehole by Video Logging Grouping ABH-101 ABH-102 Grouping ABH-101 ABH-102 Dip Azimuth average Number of joints Dip Azimuth average Number of joints Dip Azimuth average Number of joints Dip Azimuth average Number of joints N0-9 N2 3 N3 3 N180-189 N185 7 N184 8 N10-19 N16 4 N12 5 N190-199 N197 2 N195 10 N20-29 N23 4 N23 2 N200-209 N203 4 N205 6 N30-39 N33 4 / / N210-219 N213 5 N216 3 N40-49 N46 3 N44 6 N220-229 N225 5 N225 5 N50-59 N52 1 N55 5 N230-239 N235 2 N236 10 N60-69 N65 3 N66 3 N240-249 N246 8 N244 8 N70-79 N74 3 / / N250-259 N256 4 N252 4 N80-89 N86 2 N85 4 N260-269 N269 1 N263 7 N90-99 N94 4 / / N270-279 / / N274 4 N100-109 N106 8 N106 8 N280-289 / / N284 3 N110-119 N116 7 N113 3 N290-299 N298 6 N292 2 N120-129 N126 5 N124 5 N300-309 N303 2 N307 2 N130-139 N135 7 N134 12 N310-319 N317 5 N316 2 N140-149 N142 5 N145 9 N320-329 N323 6 N327 2 N150-159 N152 7 N157 4 N330-339 N334 8 N333 1 N160-169
N164 10 N166 5 N340-349 N345 4 N345 1 N170-179 N174 7 N172 6 N350-359 N355 5 / / Fig.2 Core Photos of ABH-101 Fig.3 Typical raw data and Joint and Fracture Figure of ABH-101 by Video Logging (a) ABH101 (b) ABH102 Fig.4 Rose diagrams of optical borehole logging It can be found that the number of joints obtained by the optical logging is much larger than the acoustical logging.
Range of Test Log Length [m] Number of joints Density ABH101 23.4m～49.6m 26.2 161 6.1 joints/m ABH102 20.3m～50.0m 29.7 158 5.3 joints/m CONLUSION The results of borehole logging are of good quality.

Therefore , it is very important to study the engineering properities of rock pile. 2.2 Study on the mechanical properties of rock piles on Shui-ma Expressway The rock piles are formed with a large number of interacting particles, with different shapes, sizes and packing pattern.
It is indicated that the coarse grains play a major role to the dry density, while the fine grains cannot fill the gaps and leave a minor effect
When coarse-grained content ranges between 30% and 70%, the shear strength increased significantly with the increase of coarse-grained content, indicating the supporting function of coarse grain gradually emerges, playing a major role on the shear strength.
(2) the coarse-grained content is closely related to the shear strength: when the coarse-grained content is 20％～30％, the shear strength gradually increases with the increase of coarse-grained content; when the coarse-grained content reaches 30% -70%, the the shear strength dramatically increases with the increase of coarse-grained content; when the coarse-grained content is more than 70%, the shear strength decreases with the increase of coarse-grained content.
Engineering properity and application of coarse grained soil[M].

Nucleation and growth stages involve the calculation of the volume of all growing particles, assuming that all grains never stop growing and that new grains hypothetically nucleate also in the transformed material: the extended transformed volume, i.e., at this stage, (‘hard’) impingement is ignored.
The definition of continuous nucleation implies that the number of particles (nuclei) N of supercritical size equals 0 at t = 0.
Kinetic parameter K (see Table 3) increase with the increase of cooling rate, which may also ascribe to the increase of the number of vacancies leading to the increase of the number density of suitable nucleation sites C included in the term of K.
Consequently, by increasing the density of high angle boundaries, cooling rates influences the process of grain growth.
This means that two nucleation models, continuous nucleation and site saturation nucleation, are all valid in describing the process of grain growth.

The model considers nucleation and growth of equiaxed grains, motion and sedimentation of grains, feeding flow and solute transport by diffusion and convection.
It allows the prediction of macro segregations and the distributions of grain size.
The graph in Fig. 7 displays the number of detected particles versus the detected particle size.
Each point of the graph corresponds to the number of particles detected in a size interval of 10 pix².
As mentioned in the visual observation section, both number and size of the equiaxed crystals increased with time.

As the SEM images have revealed, the average grain size of ZMO thin film are influenced by pressure and sputter power, and the average value of the grain size is about 30~50 nm.
Increasing the sputter power would induce an increase in the number of ZMO molecules participating in the sputtering event within the chamber.
The grain boundary can be seen quite obvious and the grain size only increases slightly with respect to the increase of sputtering power (i.e.
grain size increases from 30nm to 50nm as the sputtering power increases from 50W to 80W).
The average grain sizes of ZMO thin films measured are in the neighborhood of 30~50 nm with different sputtering pressures and sputtering powers attempted.

The results show that tin restrained β-Mg17Al12 phase precipitation along the grain boundary.
The content of Sn increasing from 1% to 3% leads to the size and number of Mg17Al12 second-phase decreasing.
At the same time, because Mg2Sn phase precipitates easily and forms over-colling of component in the foreland interface, it can accelerate nucleation of grain and refine grain.
Compared with cast structure, the second phases were dissolved basically except for spheric particle Mg2Sn phase dispersed in the grain and the grain boundary.
As seen in Fig.6 and Table 2, with the content of Sn increasing, the discharge potential and current efficiency decrease continuously and release hydrogen rate augments continuously, because Sn can increase the numbers of spheric particle Mg2Sn phase, and then increase the numbers of corrosion primary battery and self-corrosion rate.

Grains ≈1.2μm in size, a random grain-to-grain misorientation distribution and a near-random texture were produced by FSP at 350 RPM and 101.6mm/min traversing speed, as shown in Fig. 3(a).
OIM data showing refinement to grains ≈1.2μm in size from FSP at 350RPM and 101.6mm/min traversing speed in (a) while grains ≈3.5μm in size were formed after FSP at 800RPM and 76.2mm/min.
Near random grain to grain misorientation distributions and textures are apparent in (a) while a weak B-type shear texture component is in (b).
Reduction of costs would reflect simplification of structures and reduced numbers of parts.
Indeed, the mean linear intercept grain size in the α grains is about 5μm.