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Table 2 Effect of multiple complex activators on physical and mechanical properties of cement serial number activators fluidity [mm] flexural strength [MPa] compressive strength [MPa] compressive strength ratio of 28d type W[%] 3d 7d 28d 3d 7d 28d *DS8 — — 225 6.4 8.2 8.6 29.7 36.9 46.6 1.000 **DS6 — — 175 3.7 5.3 7.1 14.1 18.4 32.1 0.689 DFS1 J1 4 180 5.1 6.3 7.2 19.5 27.0 32.8 0.704 DFS2 6 185 5.4 7.0 8.2 20.4 27.8 38.5 0.826 DFS3 8 180 6.2 7.1 8.5 23.1 30.2 40.7 0.873 DFS4 J2 4 175 4.8 6.2 8.0 17.9 22.9 33.5 0.719 DFS5 6 160 4.4 5.9 8.0 18.8 25.2 35.8 0.768 DFS6 8 150 4.4 5.8 9.1 19.9 25.3 40.0 0.858 DFS7 J3 4 165 5.0 5.9 7.0 18.3 23.4 36.7 0.788 DFS8 6 175 5.4 6.5 7.5 18.2 22.7 37.3 0.800 DFS9 8 165 5.4 6.4 7.1 20.7 25.2 38.1 0.818 Note: *—pure cement; **—calcined coal gangue cement.
Table 3 Microstrain of chemically activated calcined coal gangue cement mortar serial number age DS6 DS8 DFS2 DFS8 1d 108.0000 197.3333 212.0000 184.0000 2d 276.0000 304.0000 385.3333 337.3333 3d 405.3333 358.6667 580.0000 424.0000 4d 542.6667 496.0000 664.0000 589.3333 5d 602.6667 574.6667 760.0000 708.0000 6d 660.0000 642.6667 804.0000 748.0000 7d 673.3333 692.0000 825.3333 780.0000 9d 712.0000 753.3333 918.6667 888.0000 14d 861.3333 980.0000 1125.3333 1000.0000 21d 954.6667 1121.3333 1137.3333 1086.6667 28d 861.3333 1026.6667 1097.3333 1054.6667 Note: The meanings of serial number were the same as those in Table 2.
At late hydration age, increasing hydration products can make calcined coal gangue cement close-grained and make contraction stop, with slight expansion.

Self-compacting and Tiny Expanding Steel Tube Concrete Preparation The Concrete Aggregate The cement is P.O 52.5, sand is intermediate grain river sand inⅡ district-level, fineness number of 2.6, its loose density is 1610 kg/m3, fully compacted density of 1785 kg/m3, the nature density of 2575kg/m3, mud content was 0.7%, the soil content is 0.3%,belong to class Ⅱ sand, organic matter content is qualified.
Table 1 Mix proportion and mix’s fluidity number water cement ratio reference consumpti-on of cement [kg/m3] sand ratio [%] admix- ture [%] slump constant/ extension[mm] 0h 2h 4h 6h 7h 8h 1 0.32 460 40 13 220/560 210/510 200/450 190/420 160/300 120/220 2 0.33 470 45 13 245/660 245/610 245/610 230/600 230/600 180/370 3 0.34 480 43 13 240/600 215/520 210/520 205/450 205/450 140/280 Table 2 Basic mechanics performance in different mix proportion Number Cubic strength of concrete[MPa] Modulus of elasticity [GPa] 3d 7d 28d 1 46.8 57.2 63.8 43.0 2 43.9 53.2 62.2 42.8 3 42.1 54.6 60.1 40.1 Mix Proportion in Finally Construction (showed as table3) Table 3 Mix proportion in finally construction materials water cement sand gravel admixture Water cement ratio Sand ratio Consumption [kg/m3] 165 470 779 951 70 0.35 45% Proportion of quality 0.35 1 1.66 2.02 0.15 Steel Tube Concrete Pumping Construction Technology The Equipment of Pumping Construction Equipped with three sets of pumping equipment

The cross-sections multi-photon processes fall off faster than can be compensated by their rate scaling with IN [13], where I is the laser intensity and N is the number of photons participating per event.
The number of photons needed is mostly defined by the material bandgap and the laser photon energy, in the case of SiC N=3.
Fig. 3 also illustrates how surface quality after separation is chiefly defined by the laser process and its interplay with crystal and/or grain structure.
As kerf-less method, COLD SPLIT can greatly expand the number of wafers obtained from a single boule of SiC compared to wire saws.

Due to the good tribological properties, the number of ceramic-ceramicpairings is continuously increasing worldwide.
With the raising number of implanted couplings an additional effect occurs in seldom cases.
Due to the large number of measurements, abrased areas and changes of the roundness values could be recorded and detected in a good way.
Break-outs of grains are clearly visible.

The number of pulses striking the target was controlled by means of a computer controlled fast optical shutter, which had a rise and fall time of 5 ms and resolution of 0.1ms.
Table 1 Characteristics of SiC Parameters Values Density, ρ 3.15 kg·dm3 Hardness,HK 2800 kg·mm2 Surface Roughness, Ra 23 nm Grain Size, r 4~10µm Porosity, Vs <0.2% Two types of experiments were conducted: (1) Parameter optimization experiments: the main parameters influencing femtosecond laser micromachining are laser pulse energy(P), repetition frequency and scanning velocity(v) when the laser wavelength and pulse width are fixed.
There is a reduction in the ablation threshold fluence with increasing incident laser shot number until up to 500[6].Change of pulse overlap is equivalent to a change of the number of pulses, so different scanning velocities correspond different optimal pulse energies respectively.

Compaction tamping hit several times and the number of selected Set the number of tamping hit single point of tamping three hammers, two hit if the average amount of ram sink after a single point of not more than 25mm, a single point of tamping paper argues that the goal has been reached; Failure to achieve this standard, a single point is repeated ramming blow.
If the subgrade soil in the main part of the coarse grained soil, its permeability is strong, tamping passes can be set at a relatively low level.
Existing studies show that the foundation mainly gravel, gravel, sandy soil and rubbish soil composition, compaction construction tamping passes 2 to 3 times better; In this paper, the research many red sandstone compaction construction site and found to be two times the ordinary tamping, and then the low-energy full rammed it again, you can achieve the requirements of the tamping goal, which is the paper argues that a better compaction ram strike set number of times.

Agate ball number is unchanged in the grinding ball, only adjust grinding ball ratio, the activated degree of heavy calcium carbonate is the largest when grinding ball ratio is 35:45, reach 99.1%.
When the number of crude agate grinding ball increase, the impact has enhanced on the surface of the grinding medium to heavy calcium carbonate, heavy calcium carbonate powder surface have been activated, the response of the coupling agent heavy calcium carbonate have accelerated, so the activated degree is the biggest.
Continue to increase the number of coarse agate grinding ball, the modification effect first falling and then rising, it may be due to two factors: collisions between agate grinding ball and medium, contact area of heavy calcium carbonate surface.
Fig. 6 Size distribution of modified heavy calcium carbonate Figure 6 show that the grain size of heavy calcium carbonate is reduced from 74μm (200 meshes) to 4.56μm after grinding modification, and the D90 is 9.72μm, less than 10μm, the size distribution have achieved the requirement of ultra-fine particle as function filler.

Their normalization to absolute units shows that the higher the size of the core the higher the intensity (and hence the number of structural correlations there).
Nanocrystals with sizes centered around 40 nm (no systematic variations can be observed) in grain size are formed irrespectively on the alloy composition and of the geometry.
This fact indicates that the larger the ρ value the higher the electronic density or the number of diffracting structural units in the core, that is the number of structural correlations.

In this method, the phase contents are calculated based on the number of points on a grid that coincide with the area of the individual phases in an optical micrograph of a sample that has been mounted and polished; phase differentiation is by colour [2].
The point counting method is considered to be relatively accurate for the assessment of C3S, C2S, and the total but it is very time-consuming owing to the large number of counts required.
The internal standard method has been observed to be influenced significantly by a number of limiting factors: · Overlap of the main XRD peaks for C3S and C2S precludes their use and the remaining peaks have relatively low intensities [2,8]
· Preferred orientation effects arising from grain growth and associated morphological effects will cause variations in the peak intensities [9]

Table 4 Process parameters at different stages of TN85 cermets grinding Serial number Wheel size Time (h) Grinding depth (μm) Table longitudinal feed speed (m/min) Electrolysis online 1 200# 0.5 20 12 No 2 W40 1 10 10 yes 3 W10 3 3-5 5 yes 4 W2.5 4 1-2 2 yes Table 5 Common process parameters of TN85 cermets grinding Wheel Type Wheel speed (r/min) Horizontal feed speed table (m/min) Grinding Fluid Wheel diameter Diamond Wheel 1500 0.67 Water-based grinding fluid Ф200 SEM Observation on the Surface Morphology of TN85 Cermets Grinding.
Fig.1 (c) shows that the grinding surface is smooth, the grinding marks are not obvious and the number is small, that micro-plastic deformation being dominant is the main features of grinding surface ofTN85 cermets.
Fig.2 (a) is the AFM micro-graphs of grinding surface using 200 # grinding wheel, the surface after rough grinding is composed of a number of integrity marks and the small planes locating in the marks.
As the nickel matrix is relatively soft, it can be easily removed plastically with a large area after rough abrasive grinding; abrasive particle is far greater than the reinforcement phase TiC (1 ~ 3μm), the whole grain particles of enhancing the phase TiC are also removed with nickel-based body being removed.