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The spatial variation of the material composition results in a medium with varying elastic and physical properties and calls for investigation into the fracture of FGMs under different loading conditions.
As to the investigation into dynamic fracture properties of FGMs, there is very little attention paid on it.
The physical properties of these samples are obtained through mechanical and optical method.
As an alternative approach, the large scale functionally graded materials is formed to study the dynamic fracture properties.
Evaluation of mechanical properties of functionally graded materials.

Low modulus synthetic fibers such as polyolefin based fibers, it is shown that polyolefin fibers with sufficient tensile strength can successfully enhance the mechanical properties of concrete.
Low modulus synthetic fibers, such as polyolefin based fibers it is shown that polyolefin fibers with sufficient tensile strength can successfully enhance the mechanical properties of concrete[1].
An improvement of the mechanical properties of the originally brittle cementitious matrix through the addition of fibers can be achieved by a load transfer from the matrix towards the fiber (pre-cracking) and by bridging of cracks (post-cracking).
Two of the most prominent factors affecting flow are the aspect ratio (fiber length/diameter) and the volume fraction of fibers.
Santhanam: Mechanical properties of high strength concrete reinforced with metallic and non-metallic fibres, Cement & Concrete Composites (2007) [7] A.

Probabilistic Analysis of Three-Dimensional Beams with Uncertain Damage Cristina Gentilini1,a and Lucio Nobile1,b 1 Distart Department, University of Bologna, Viale Risorgimento 2, 40136, Bologna, Italy a cristina.gentilini@unibo.it, b lucio.nobile@unibo.it Keywords: three-dimensional beams, cracked beams, stress intensity factor.
A computationally efficient and accurate method has been presented in [1] to study truss structures with uncertain geometrical and mechanical properties and, such approach has been extended in order to analyze linear elastic truss and frame structures with uncertain crack depth and crack location in [2].
Let assume that the structural element is affected by uncertainties, which influence the compliance matrix: ( )aa a=C C β (2) where βa is a vector of uncertain parameters modelled as random variables.
All these compliances are function of the dimensionless crack depth ξ and related to the Stress Intensity Factors (SIFs).
For the considered B×H rectangular cross-section with an edge crack, Fig. 2, the stress intensity factors can be put in the form: ( ) ( ) ( ) ( ) ( ) ( ) I I II 2 III III 3/ 2 3/ 2 6 , , 1 2 , z z y y z z x x y z N N M M S S x z S S T T S M N K H F K H F K H F BH BH B H T S K F K F BH BH πξ ξ πξ ξ πξ ξ ξ ξ ξ = = = − = = (11) where the correction functions FN, FMz and FSy are taken from [5] while FTx and FSz are given by [3] and [6], respectively.

In polymer matrix composites reinforced by fibers, fiber and polymer combine some physical and mechanical properties generating a new material with properties different from the previous ones.
Anisotropy is the major problem that affects the composite properties.
For obtaining an ideal interface some factors must be considered.
Among these factors one can mention: the chemical and the physical bonds, the electrostatic and the mechanical interactions, and wetting properties.
· Mechanical properties comparable to other processes (assuming the same resin system and equal fiber content)

A large number of studies have shown that there are many influence factors: including the difference of molecular structure, particle size and type of crumb rubber powder, the chemical properties of asphalt, as well as modified asphalt processing technology and so on [14,15,16,17].
Measurement of Properties.
Results and Discussion Effects of ACRMA Preparation Technique on the Properties.
The shearing temperature is key factor.
Favorable properties of ACRMA can be achieved through changing the preparation technology.

Physical properties of bentonite.
The main factor affecting the accuracy of ANN is the training set.
Mahinroosta, Physico-mechanical properties of organo-modified bentonite reinforced cement mortars, Iran.
Liu, et al., Influence of various bentonites on the mechanical properties and impermeability of cement mortars, Constr.
An experimental study investigating the effects of bentonite clay on mechanical and thermal properties of concrete.

The components of iron ore concentrate and magnesia binder, having improved sorption properties, significantly accelerates the formation of such a structure.
It is known that the materials on magnesia binders have enhanced protective properties from electromagnetic radiation.
The radiation-protective properties of materials were measured by linear and mass attenuation factors of γ-radiation using a DKS-96 dosimeter-radiometer.
Further, the effect of LC and its heat treatment products at 800 ° C (LC800) on the properties of the magnesia binder was investigated.
Perminov, Features of the influence of the additive of iron hydroxide sol on the structure and properties of magnesian stone, Vestnik SURG.

The experimental results showed that tensile mechanical properties of T300/AG80 composite laminated specimens were obviously superior to ones in compression test.
Introduction Carbon fiber composites materials are widely used as preferred structural materials for aerospace engineering, because of its excellent mechanical properties such as high specific strength, high specific modulus, light density, dimension stability, good heat resistance and material properties can be designed [1].
The tensile and compressive mechanical properties of specimens were tested in room temperature using electronic universal testing machine in order to design the magnitudes of pre-loads exerted on specimens during laser irradiation.
The magnitudes and differentials of pre-loads were designed according to the mechanical properties of composites tested in room temperature.
Conclusions (1) Tensile mechanical properties of T300/AG80 composite laminated specimens were much better than compressive mechanical properties

RFA, however, has negative influence on mechanical properties and durability of RAC because of a large number of mortars attached to its surface, therefore had been restricted in structural concrete for a long time.
The properties of RFA from three different types of recycled aggregate sources with twice regeneration were tested and evaluated according to different standards.
Thus, it was speculated that the key factor which influenced the properties of recycled aggregate was the adsorption mortar.
It could be seen that adsorption mortar is one of the key factors which affect the performances of recycled aggregate.
Although the RFA performances are generally inferior to those of natural aggregate, aggregate properties can meet the mainstream specifications of domestic and international after the recycling treatment.

Fresh concrete properties.
There are a number of factors that might have contributed to this phenomenon, one of which is the water content.
Strength Properties.
This the author attributed to a number of factors which are: the aggregate to cement ratio became wide, and the cohensionless nature of bottom ash.
[9] Siddique, R. (2003) “Effect of fine aggregate replacement with Class F fly ash on the mechanical properties of concrete.”