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(1)Surface layer and base road are homogeneous and isotropic linear elastic material composition, they obey Hooke's law, subgrade and foundation are the ideal elastic-plastic material and in line with the Mohr coulomb's law
Chinese Journal of Rock Mechanics and Engineering, 2009(11): 2208–2214.
Journal of Jiangsu University, 2008,29(3):264-268.
Journal of southeast university (Natural Science Edition), 2007,37(5)：921-925.
Journal of Engineering Mechanics,1998, 124( 9): 1010- 1017

Adaska, C., State-of-the-art report on soil-cement, in ACI Materials Journal. 1997, ACI Committee 230.1R-90
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ASTM, American Society for Testing and Materials (ASTM).

Materials and experimental procedure.
As shown table 3, each varying rate of maximum load on some materials is very different.
Premise 3 : Tensile plastic zone sizes of materials are deferent very much each other and in same material and structure plastic zone size is decided by only stress ratio.
-No.3: If applied stresses are same but materials are different, crack propagation rates are different.
Knott, "Fatigue crack growth retardation in plane stress and plane strain", Journal of Materials Science, Vol. 26, pp. 5613-5617 (1991)

Introduction AlN is an attractive material due to its unique characteristics including wide bandgap, high thermal stability and conductivity, high piezoelectric response and breakdown electric field, and small lattice mismatch to GaN-based materials [1–3].
Zhou: Applied Surface Science. 518 (2020) 146218
Hu: Materials Science in Semiconductor Processing. 144 (2022) 106612
Zhang: Materials. 14 (2021) 1722
Chen: Journal of Elec Materi. 44 (2015) 217–221

The machining of difficult-to-cut materials such as titanium plays a key role in several industries such as aerospace or medical.
During the machining of hard-to-machine materials such as titanium, high temperatures occur at the interface between tool and workpiece due to the low thermal conductivity of titanium [1].
Lahres, Quantitive measurement of temperatures on diamond-coated tools during machining, International Journal of Diamond and Related Materials 4 (1995) 1216-1221
Tan, Multilayered (Ti, Al) ceramic coating for high-speed machining applications, Journal of Vacuum Science & Technology A 19 (2001) 1919 – 1922
Mathur, Oxidation behaviour of Ti6Al4V titanium alloy in oxygen, Materials Science and Technology (18) (2002) 111-114

Based on the general regularities of β-C2S and α’-C2S interaction with aluminate solutions, one could expect the influence of structural features of different types of sinters based on various alkali-aluminate raw materials on silica transition into aluminate solutions.
Due to the disordered structure of α’-C2S (high content of small particles, fragments), a high level of oversaturation of SiO2 in the solution quickly occurs with respect to the metastable equilibrium of Na2O – Al2O3 – SiO2 – H2O, similar to how, for example, oversaturation with SiO2 in an alumina solution occurs when it interacts with active forms of silicon containing materials - hydrargillite bauxite, silicicic acid [2, 3].
At the rapid creation of significant oversaturation with SiO2 in the alumina solution (due to the active silicon-containing materials) unstable in this range of concentrations of bonds [Al - O - Si] may occur, which lead to the formation of alumina-silicon associates (sodium hydroaluminosilicate prototype) and crystallization of sodium hydroaluminosilicate, the system "eats" the excess silica and returns to the metastable state with the participation of simple hydrated silicon and aluminum ions.
Ivanova, Intensification carboaluminate technology of ultradeep desiliconization, Journal of Physics: Conference Series 1384(1) (2019)
Fialkovskiy, Effect of anion composition on the extraction of cerium (Iii) and yttrium (Iii) by oleic acid, ARPN Journal of Engineering and Applied Sciences 13 (9) (2018) 3152-3161

The deposition quality in a laser-based powder deposition of composite material depends on how the powder particles are injected into the melt pool [6].
Journal of Manufacturing Processes, Volume 8, No 2, 2006, Pg 121-132
Kovacevic, “Parametric study on a coaxial multi-material powder flow in laser-based powder deposition process” Journal of Materials Processing Technology 212 (2012) Pg 1598– 1610
Shackleton, “A comparative study of laser direct metal deposition characteristics using gas and plasma-atomized Ti–6Al–4V powders” Materials Science and Engineering A 528 (2011) Pg 7648– 7657
Baker, “Effects of Nitrogen Gas Flow Rate on the Microstructure and Properties of Laser-Nitrided IMI318 Titanium alloy (Ti-6Al-4V)” Journal of Materials Processing Technology 77 (1998) Pg 115-121

Natural gray granite was used as workpiece materials.
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Yu: Journal of Materials Processing Technology, Vol. 250 (2003), pp. 281-285

Materials and methods Study Area.
Since metal or metal alloy materials that contain Pb, Cu, Cr, etc. were used as raw material to produce mechanical and electrical products for machining industry in Chongqing, so some heavy metals might move from the material to the nearby soil.
The reason of the difference mentioned above might be due to the materials used by different factory were different.
Advanced Materials Research. (2011) [3].
Journal of Southwest Agricultural University (Natural Science). 28 (2006) 227-230

Material model is elasto-plastic body.
Yeh, Journal of Strain Analysis for Engineering Design, 42, 5 (2007), 315-324
Yang, Journal of Materials Processing Technology, 177, 1-3 (2006), 171-174
Kwan, Key Engineering Materials, 364-366 (2008), 949-954
Hassan, Journal of Materials Processing Technology, 213, 9 (2013), 1465-1474.