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Finite element simulation of recycled concrete slabs with anchor bolts The simulation use the ABAQUS nonlinear finite element software which handle the nonlinear materials better.
The material parameters are shown in Table 1.
Table 1 Material parameters materials Concrete Steel plates The steel bars The stirrups of Column The plates of anchors Anchor bars Strength grade C40 HRB400 HRB400 HRB335 Q235 HPB235 Density (KN/m ³) 25 78.5 78.5 78.5 79 78.5 Modulus of elasticity ×104N/mm²） 3.25 20 20 20 21 21 Poisson's ratio 0.2 0.3 0.3 0.3 0.3 0.3 The constitutive relation of ordinary concrete used in simulation is from "code for design of concrete structures" (GB50010-2010), parameters and constitutive relation formula are taken from the appendix C.2 (GB50010-2010).
Journal of building structures, 1999, 20 (1): 50-58
Journal of building structures, 1982 (1): 1-8

The experimental techniques dedicated to the evaluation of residual stresses at the interfaces and in the bulk of materials have been improved.
Materials and Methods A nano-hydroxyapatite double side coated 20x11x2mm Ti-4Al-6V plate was implanted in a sheep's tibia.
Subsequently the stresses were calculated using ISO/TTA3 standard: Polycrystalline materials - Determination of residual stresses by neutron diffraction.
Since bone is a porous material, there are non-uniformly distributed internal cavities over the measured areas.
-H., Benmarouane, A. and Lodini, A.(2007)'Neutron diffraction study of nano-hydroxyapatite coatings on titanium substrates',Journal of Neutron Research,15:3,225 - 229 [5] Benmarouane, A., Taiar, R., Hansen, T., Millet, P. and Lodini, A. (2007) 'Influence of load on the arrangement of hydroxyapatite crystallites at the interface with implants in different animals', Journal of Neutron Research, 15:3,243 - 248 [6] Carradó, Adele, Sprauel, Jean-Michel, Barrallier, Laurent and Lodini, Alain (2001)'Neutron and synchrotron evaluation of residual stresses in coatings', Journal of Neutron Research, 9:2,193 - 200 [7] O.

This paper deals with the use of waste materials from processing of stone in the construction industry.
Because of the improvement of the environment or the reduction of environmental degradation and reduction in quantity of waste materials which are not reusable, the effort to utilize these waste materials in harmony with sustainable development principles increases [1].
The estimated quantity of waste materials from the extraction in Egypt is 6.4 million tons per year [2].
The best way how to make these waste materials on the basis of marble and limestone reusable is recovery [3].
Ibrahim, et al., Health Risk Assessment of Marble Dust at Marble Workshops, Nature and Science, 9 (2011) 144-154

Unlike OPC, which involves high energy and fuel expenses, these supplementary materials require minimal processing and transportation.
Construction and Building Materials, 22(8), 1675–1683
International Journal of Concrete Structures and Materials, 12, Article 17
Mangi et al., “Influence of combined supplementary cementitious materials on mechanical and durability performance of concrete,” SN Applied Sciences, vol. 6, 2024.
Materials, 9(3):146. https://doi.org/10.3390/ma9030146

Experimental material and methods Materials.
Armes: Advanced Materials Vol. 11(1999), p. 408 [2] H.Y.
Zhao:Polymer Materials Science And Engineering Vol. 22(2006), p. 158 [4] K.
Kang and Y.C.Nho: Journal of Applied Polymer Science Vol. 92(2004), p.394 [8] S.F.
Xue: Polymer Materials Science and Engineering Vol. 26(2010), p.13 [9] R.

But materials of low absorption or mixed phases show a weak absorption contrast at there interfaces.
This is in analogy to the behaviour of visible light in transparent materials e.g. lenses or prisms.
Therefore the novel X-ray refraction technique might help accelerating materials development, leads to a better understanding of meso-structures and partly replace micro analysis and mechanical testing in advanced materials science.
Schlenker, Journal of Physics DApplied Physics 29 (1996) 133
Mueller, Journal of Synchrotron Radiation 15 (2008) 525.

The model is created by according to mining model of underhand drift, the parameters of various materials are based on field investigation, which is shown in Table1.
The net is 200(mm)×200(mm), the material is the steel wire.
Mechanics of materials.
Beijing: Science Press,1978.
International Journal of Structural Engineering, Vol. 1(1)(2009), pp. 40

Science, 43 (2008) 1003-1009
Kestens, Microstructure evolution and mechanical properties of AA1100 aluminium sheet processed by accumulative roll bonding, Materials Science and Engineering, A497 (2008) 132-138
Kang, Mechanical behavior and microstructural evolution upon annealing of the accumulative roll-bonding (ARB) processed Al alloy 1100, Materials Science and Engineering, A480 (2008) 148-159
Zamanian, Optimization of the tool geometry in the deep drawing of aluminium, Journal of Materials Processing Technology, 72 (1997) 363-370
Yang, Finite element analysis of elliptic cup deep drawing of magnesium alloy sheet, Journal of Achievements in Materials and Manufacturing Engineering, 27 (2008) 139-142

In this way, the evaluation of the microstructural changes that take place in the material under different heat treatment conditions, are very useful to control the mechanical properties of the material.
Journal of Materials Science, Vol 36, (2001), p. 1363 - 1371
Materials Science Forum, Vol. 509 (2006), p. 11-21
Metallurgica and Materials Transactions A, Vol. 30 A, (1999), p. 1663-1673
Materials Science and Technology, Vol. 2, (1986), p. 807-815.

This effect is generally related to each mechanical testing of materials.
This fact may be useful for educational purpose as well as for engineering practice, where is need to choose a suitable load to obtaining good results.Materials and methods Materials There were used 3 types of materials.
That fact is same for used materials.
LO1203 "Regional Materials Science and Technology Centre - Feasibility Program" funded by Ministry of Education, Youth and Sports of the Czech Republic.
Pharr, Measurement of hardness and elastic modulus by instrumented indentation: Advances in understanding and refinements to methodology, Journal of Materials Research, Vol. 19, No. 1,(2004) 3-20