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In the high temperature state, gas-forming quantity of furan resin sand is larger than ordinary clay sand one times, and large pieces cast iron and cast-contact surfaces are not instantaneous solidification, which results a large number of gas into liquid iron.
(2)Grain shape and size: The original sand should try to use the angular coefficient low round or oval sand.
When cast has a large number of gas, the molten steel has established a sufficient static pressure, which can prevent the intrusion of the gas, reduce the sand thermal radiation time, and prevent the high temperature molten steel a long time thermal effect, caused the paint, sand off, and resulted in trachoma and other casting defects.

Humphrey and Kalu [6] have suggested that the bigger the size of the particles, the more the number of deformation zones per particle, and the bigger the rotating amount of deformation zones.
The amount of rotation in the zones and the number of zones per particle is found to increase linearly with strain.
However, because this kind of particles are fine and mainly locate at the grain boundary [5, 7], they may benefit the matrix of the MMC to obtain a more homogeneous deformation compared with that of the unreinforced material [2].

Tab.1 The average rebound value and strength of the rammed-earth blocks Moisture content[%] Number Average rebound value Rm [mm] Compressive strength fcu[MPa] 110 -Year 240-Year 110 -Year 240-Year 2.0 1 44 50 1.52 1.36 2 42 47 1.48 1.32 3 40 45 1.49 1.30 2.5 4 40 46 1.47 1.31 5 37 47 1.38 1.25 6 37 43 1.40 1.22 3.0 7 38 43 1.35 1.25 8 34 43 1.32 1.30 9 35 39 1.36 1.17 3.5 10 32 40 1.29 1.21 11 33 40 1.24 1.23 12 33 41 1.30 1.10 4.0 13 32 39 1.19 1.15 14 30 36 1.15 1.05 15 29 34 1.21 1.11 5.0 16 27 34 1.08 0.96 17 29 35 1.18 1.02 18 25 32 1.10 0.91 Building testing strength curve of rammed-earth material .The equation of the < Technical Specification > to establish the testing strength curve of rammed-earth material: （3） According to the literature [13] and [14] to select a more suitable equation, add two equations:
[MPa]；δis the average relative error of compression strength [%]，accurate to 0.1；er is the relative standard deviationof compression strength[ %]，accurate to 0.1；n is the number of specimens.
Grain Distribution Technology, 7(16)(2004)40-42.

Introduction Due to the industrial development, increasing number of vehicles and manufacturing facilities add the severity of contaminant levels in atmosphere.
Gradient grams of un-treated activated carbon and AC mixture grain were put in 3 liters of tedlar gas bags, used as adsorbent for the standard BTEX gas (2L).
Detection of dust concentration was conducted in every 30 cm distance from the inlet, and in each sampling section, number of electrode were equipped in 3, 2, and 1cm interval.

The initiator (0.2 ~ 0.8% of the total monomer) was relatively appropriate, because it could make the product be prepared blue present, small grain size and good emulsion stability.
If the monomer dropping speed too fast, the monomer increased in short time can make reaction system temperature rise, reduce the activation energy of initiator, produce more number of free radicals, reaction intensify reaction, result in “explosive polymerization”.
Unstable dropping speed of initiator can lead to different free radicals number generated in different polymerization stages, and not consistent polymerization rate, resulting to the difficult of controlling reaction temperature.

Crystallite can be considered a number of cells with crystalline structure that are systematically linked and are creating coherently diffracting domain.
β=B2-b2 (2) β… Full peak width at half maximum height after correction [rad] b… error of peaks due to imperfections of the device [rad] Scherrer equation after modification: L=K∙λcosθ∙1B2-b2 (3) Scherrer constant K is shape factor and takes values according to the shape of the grains.
LO1408 "AdMaS UP - Advanced Materials, Structures and Technologies", supported by the Ministry of Education, Youth and Sports under "National Sustainability Programme I" and by project No. 15-08755S: "Study of the effects of samples preparation on the final properties of inorganic binders" and project number FAST-J-17-4604 “Monitoring the properties of the limestone during thermal loading by DKTA, DSC and XRD-HT methods”.

As regarding the mesh of the 3D model generated by the Femap NX Nastran program (see Figure 3b), this has been constructed as having a total number of 177.686 nodes and 142.076 finite elements.
As one may observe in these graphics, in all three cases a total number of 14 iterations were necessary to be done in order to perform the optimization.
Zavacka, Effect of drawing tubes without interoperation recrystallization annealing on the orientation of boundaries grain – longitudinal direction, Applied Mechanics and Materials 421 (2013) 329-333 [8] Z.

The grain size of quartz sand is divided into three: Coarse (1.0~0.63mm), Middle size (0.63~0.315mm) Fine particle size(0.315~0.16 mm).
Table 5 Amount and percentages of the two distribution forms of steel fiber within 5mm from the bottom Orthogonal Oblique crossing Total number A1 252 (82.4%) 54 (17.6%) 306 A2 142 (63.4%) 82 (36.6%) 224 A3 104 (55.9%) 82 (44.1%) 186 A4 327 (78.0%) 92 (22.0%) 419 In Table 5, Orthogonal means the steel fiber and crack are essentially vertical and Oblique crossing means the angle is not more than 45 degrees.
Table 6 Amount and percentages of the two failure modes of steel fiber within 5mm from the bottom Pulled out from concrete Snapped Total number A1 294(96.1%) 12(3.9%) 306 A2 215(96.0%) 9(4.0%) 224 A3 173(93.0%) 13(7.0%) 186 A4 401(95.7%) 18(4.3%) 419 Conclusions and recommendations Through the above analysis of simply supported RPC plate experimental data, the conclusions can be drawn as follows: 1) Assuming that the tensile stress of the cracking section bottom is uniformly distributed along the width direction, the average stress calculated by the bending theory of elastic thin plates before cracking is close to the one obtained from the measured result.

Historically, a number of models, e.g. grain boundary model [4, 5, 6], domainwall pinning model [7], and volume effect model [8], have been proposed to explain the origin of aging.
As for exponents of frequency, there are both positive and negative numbers.

A large number of γ＇phase in a very short time precipitate rapidly from the matrix during cooling, the second γ＇phase with lager size is precipitated at high temperatures, and with smaller size, γ＇phase is precipitated at lower temperatures Fig. 1 DZ417G directional solidification phase morphology.
The main precipitates carbide is MC and M6C carbide, and a small amount of M23C6 carbides, thus preventing the grain boundary sliding and improving high-temperature creep strength of the alloy.
Ren, A dramatic increase in dendrite number for directionally solidified superalloy DZ417G with a strong static magnetic field, Mater.