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A large number of polytypes are known; the cubic polytype is referred to as β-SiC and the other non-cubic structures (hexagonal and rhombohedral) as α-SiC [3].
A number of inorganic polymers has been developed.
They are homogeneous with elongated grains.
Yttrium containing secondary phases in grain boundary, grain triple points and intergranular pores can also be seen.

Concrete road surface broken after petrochemical pavement structure: 4 cm AC- 10 fine grained type asphalt concrete pavement + 8 cm SLPM - 25 coarse asphalt macadam base. 1.3.2 Design of mix proportion ①The raw materials: asphalt by heavy into asphalt AH - 70 road asphalt, aggregate using Anlu Jinlei stone limestone rubble; Coarse aggregate in 13.2 ~ 26.5 mm, 4.75 ~ 13.2 mm, 2.36 ~ 4.75 mm, gravel collected from AnLu tianjin ray crushed stone factory production of limestone; Fine aggregate < 2.36 mm collected from AnLu tianjin ray crushed stone factory production mechanism of sand. ②The target design of mix proportion Grading for 1 #, 2 #, 3 #, 4 # = 42:31: therefore, the optimal design of the oil-stone ratio is 3.5%, and its design grading below figure 1: Fig1.
Table 1 Rebound deflection measurement data sheet Pile number extent extent note revolver revolver Initial reading End reading Deflection value（0.01） Initial reading End reading Deflection value（0.01） K26+500 0 12 24 0 10 20 K26+550 0 9 18 0 13 26 K26+600 0 13 26 0 11 22 K26+650 0 10 20 0 10 20 K26+700 0 11 22 0 6 12 K26+750 0 11 22 0 10 20 K26+800 0 12 24 0 12 24 K26+850 0 14 28 0 11 22 K26+900 0 10 20 0 13 26 K26+950 0 13 26 0 10 20 K27+000 0 12 24 0 8 16 K27+050 0 11 22 0 9 18 K27+100 0 10 20 0 10 20 K27+150 0 8 16 0 7 14 K27+200 0 10 20 0 11 22 K27+250 0 12 24 0 12 24 K27+300 0 9 18 0 13 26 K27+350 0 8 16 0 10 20 K27+400 0 11 22 0 14 28 K27+450 0 13 26 0 12 24 Za: The reliability coefficient I：Measuring deflection mean value S：Standard deviation Ir：Representative value I=21.55 Za=1.5 S=3.748 Ir=I+ZaS=27.172 3.2 Marshall test The field detection, asphalt macadam base oil-stone ratio, the most heavy hair volume density, void ratio, asphalt saturation are meet the
Table 2 Asphalt mixture Marshall stability and volume performance test (volume method) Specimen Numbers 1 2 3 4 average Specimen size measured value （mm） 95.2 96.1 95.5 96.1 —— 95.6 95.8 95.8 95.7 —— 95.5 96.3 96 96.3 —— 95.8 96.4 95.9 96.2 —— Specimen average (mm） 95.4 95.8 95.5 95.8 95.6 Dry specimen air quality ma (g) 3857.3 3877.5 3866.7 3880.6 3870.5 Specimen diameter （mm） 152.4 152.4 152.4 152.4 152.4 Specimen volumn (cm3) 1739.4 1746.6 1741.2 1746.6 1743.5 Hair volume relative density γf=ma÷V (g/cm3) 2.218 2.220 2.221 2.222 2.220 Experiment temperature correction coefficient β 1.000 After correction hair volume relative density γf=ma÷V(g/cm3) 2.218 2.220 2.221 2.222 2.220 Theoretical maximum relative density γt （g/cm3） calculation 2.604 measured 　 　 Voids VV=(1-γf÷γt)×100 (%) 14.8 14.7 14.7 14.7 14.7 Asphalt percentage by volume VA (%) 7.30 7.30 7.30 7.30 7.30 Ore material gap rate VMA=VV+VA (%) 22.4 22.3
But due to the grain size bigger and thickness thicker, construction process for the production of segregation, and strengthen the pavement outside of the subgrade drainage is to big size flexible base structure the key to success.
Big grain of stone asphalt mixture flexible base in pavement reinforcement application [J].

Grain size analysis test.
The results showed that, as the silt particles whose grain size were between 0.005mm~0.05mm or less than 0.005mm increases, the content of viscous particles and the plasticity indexes of the silt were higher.
By means of experimental research on plasticity index and grain size analysis of silt in Nantong, we can know that the plasticity index of silt of Yangtze River and interior river in Nantong section meet the needs of raw materials of sintered brick, most of silts can replace the clay to produce sintered production.
The content of SiO2 in silt is higher, so a large number of Si-O keys would be formed easily during the sintering process in high temperature.
(4) The chemical composition and mineral composition of silt of Yangtze River and interior rive were almost same as clay.The content of SiO2 in silt is higher, so a large number of Si-O keys would be formed easily during the sintering process in high temperature.

Silica is undoubtedly one of the most often chosen traditional refractory materials used in a number of industrial areas for many years.
The working mass for sample preparation contained fine grain quartzite in three fractions 0-1 (27%), 1-2 (28%), 2-3 (6%), quartz sand with grain size 0-1 mm (13%), silica flour with grain size 9 mm (21%) and microsilica (5%).
Registration number CZ.1.07/2.3.00/20.0111.

Rice grain consists of four main parts which are husked, bran, endosperm and embryo.
Rice husk is the outermost layer of paddy grain.
Rice hulls are the hard, protective shells formed over rice grains during the growing season [2].
Fig 1: Graph of average temperature difference versus sample number From Fig 4.2, the value of thermal conductivity decrease as the ratio of mixture rice husk fiber in gypsum increase.
Fig 2: Graph of thermal conductivity versus sample number During the experiment, the initial temperature for all point is about 27°C for all samples and all points.

The incorporation of Degussa P25 as an additive in TiO2 alkoxide sol has allowed for modification of the film morphology, crystallinity, as well as the grain size, leading to a better performance of the films [6,7].
However, studies have also shown that Degussa P25 may produce agglomeration, resulting in bigger grain size that reduces the photocatalytic activity of the TiO2 films.
Due to a higher surface roughness of the unglazed ceramic tiles (5.5 ± 0.2 µm) compared to the glass slide (0.02 ± 0.005 µm), increasing the number of dipping time on unglazed ceramic tiles contributed towards increases in thickness.
Thus, it can be deduced that TiO2 coatings without the addition of Degussa P25 as an additive are mostly amorphous that may consist of small grains.
For antimicrobial application purposes, further works will be directed on optimizing the deposition conditions, such as the number of dipping, in producing continuous layer of coating without visible cracks.

A number of studies have showed that the HMW subunits have extended structures in solution, although the precise dimensions that have been reported vary from about 50 X1.8 nm to about 90X1.5 nm[2].
The molecular mass of the subunits ranges from about 32 to 42 kDa, while the number of repeats ranges between 12 and 25 [2].
Burgess and Shewry showed that embryos of wheat contained globulin subunits of mass about 40-55 kDa, which they have also been used to demonstrate that 7S globulins are present in protein bodies in the aleurone cells of the wheat grain [18].
Triticins, which described in these reports as subunits of 11S proteins, have been estimated to account for about 5% of the total grain proteins and are deposited in protein bodies in the starchy endosperm cells [22, 23].
Khan, Wheat grain proteins, in Wheat: chemistry and technology, K.

Research shows that nanoscale silicon ash can reduce the porosity of hardened cement slurry in transition region, plays as jam pore packing and generate chemical reaction on the role of calcium silicate gel with Ca(OH)2 from hydration, refine Ca(OH)2 grain at the same time, decreasing interfacial Ca(OH)2 orientation degree, has the remarkable increase cement concrete strength[3] role.
Tab.3 Sample ratio(%) Sample number Fly ash（g） Cement（g） Superfine silica fume（%） Water-reducing agent（%） Water（ml） 0 900 900 0 1.5 468 1 900 900 0.5 1.5 468 2 900 900 1.0 1.5 468 3 900 900 1.5 1.5 473 4 900 900 2.0 1.5 478 5 900 900 2.5 1.5 483 6 900 900 3.0 1.5 490 7 900 900 3.5 1.5 498 Effect on the different stadium strength of cement base material by the amount of superfine silica fume incorporated in Effect on the strength of sample mixed with superfine silicon fume with different stadium show in tab.4.
Tab.4 Strengths of the sample with different stadium Sample number 3d Strength（MPa） 28d Strength（MPa） 60d Strength（MPa） bending strength Compressive strength bending strength Compressive strength bending strength Compressive strength 0 4.30 17 3.55 42.4 5.5 44 1 5.00 19.1 3.20 47.9 5.30 56.8 2 4.95 19.2 3.45 47.3 4.60 49.2 3 4.70 18.4 4.40 46.8 5.75 55.8 4 4.50 21.4 3.30 45.9 4.55 54.1 5 4.27 21.8 3.30 49.8 6.35 59.1 6 3.65 19.9 3.45 38.9 5.10 46.2 7 3.86 20.5 3.15 47.7 4.67 52.7 For cement-based materials, compressive strength is more important[4].From Tab.4, the results show that the compressive strength of samples added superfine silica fume are almost larger than the compressive strength of blank.
The content of Aft, AFm in cement mortar after modified increases.After adding superfine silica fume, the crystal orientation of Ca(OH)2 crystal is weakened and the grain size and crystal content is reduced.
From the analysis above we can see:there is no new phase formed after modification; modified Ca(OH)2 crystal orientation is decreased, grain refined and amorphous; adding superfine silica fume can increase the degree of hydration of cement mortar to improve C-S-H gel quality, reduced the negative effects of Ca(OH)2 and improve the uniformity and strength; C-S-H gel increased and the C / S molar ratio decreased in the cement paste hydration products help reduce the alkalinity and increase the durability of the system. 3.4 Superfine silica fume on the hydration products of cement-based materials, thermal mechanism of TGA-DTA TGA-DTA curves of samples doped with 2.5% superfine silica fume after hydrated for 3 d and 28 d shown in Fig.2 (a) 3 d (b) 28 d Fig.2 TGA-DTA curves of samples after hydrated for 3 d and 28 d From 28 d illustration: The first large endothermic peak is at 55.39℃, weight loss rate is 4.92%,the main reaction occurred is take off the free water, adsorbed water

Number and expansion height of sample are shown in Tab.1.
Table 1 Foaming parameters of sandwich samples at furnace temperature of 740℃ Number Sample temperature[℃] Sample mass[g] Expansion height [㎜] 0 — 12.5 7.9 1 700 12.4 18.0 2 710 12.4 19.4 3 720 12.3 20.0 4 730 12.5 18.5 5 740 12.4 17.2 Fig 3Temperature and foam expansion evolution curve of sandwich samples at furnace temperature of 740℃ by hot pressing b) a) c) 3.6mm Fig. 4 Aluminum foam sandwich samples after foaming: a) photograph of the sample, b) cross–section of the sample at temperature of 710℃, c) cross–section of the sample temperature of 720℃ Fig.5 SEM micrograph (including line scanning) at Fe-AL interface of sandwich precursor after foaming of a） 2# sample and b)3# sample The columnar grains The columnar grains b) a) b) a) Fig.6 ELEM analysis of Fe and Al elements at Fe-Al interface of a) 2# sample and b) 3# sample It can be seen from Fig.5 and Fig
From the Al-Fe phase diagrams[20], firstly ,FeAl3 structure will form when Fe content is more than 0.9at% and sample temperature ranging from 700℃ to 740℃ in the uniform grain region, subsequently, eutectic reaction occurs with sample temperature decreasing to 928K(655℃), and α(Al)+FeAl3 structure will occur, which leading to a good metallurgical bonding interface between steel sheet and foam core.

Quenching temperature [°C] Period of time in the oven [hour] Number of repetitions of the hardness measurement Measured Hardness [HV30] Sample 1 Sample 2 Sample 3 Sample 4 HS6-5-3 HS6-5-3-5 K190 K390 200 1 hour 3 times 767.4 769.4 759 851.4 450 1 hour 3 times 759.6 736.2 726.4 829 475 1 hour 3 times 760.8 743.4 741 844.8 525 1 hour 3 times 804 774.6 744.6 863.2 550 1 hour 3 times 892.6 877.2 868.4 889.8 575 1 hour 3 times 889.2 907.6 760.2 845.8 600 1 hour 3 times 840.2 878.4 666 766.2 650 1 hour 3 times 711.7 809.33 525 609.2 Indicates that the silicon element stabilizes the carbides and delays its transformation to cementite and the addition of 1 to 2% of this element allows the presence of carbides up to 400 °C, an advantage over the non-silicon steels where this carbide is stable up to 200 °C.
By SEM images microstructure of sample 1 (HS6-5-3) in Figure 3 – a, was observed the matrix becomes very visible with the formation of small tungsten carbides and globular precipitates, it is possible to see the formation of some defined grains and precipitates with a needle shape, being that this obtained microstructure reached 3.5 μm of depth and 850.1 HV in test nanohardness.
In sample 2 (HS6-5-3-5), which has the addition of cobalt in its composition, in Figure 3 – b it is possible to see similar shapes to the microstructure of HS6-5-3 steel, however the grain is less defined.
In order to better explain these phenomena [4], the presence of carbide in these tool steels is essentially to impart resistance to abrasion and wear after the quenching and tempering process, in addition to inhibiting austenite grain growth.
The tools of this material have a long service life and a lower probability of fractures on sharp edges, already sample 4, has abrasive wear resistance is improved by the higher vanadium content, which inhibits the number of hard carbides in the material.