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The aggregate quality is directly related to the quality of concrete, specially fine aggregates to which should be given greater attention.The aggregates located near consumers suffer larger scarceness and many factors, as the exploration impacts,have been contributing for this problem.
However, CAA demands a more rigorous control than conventional concrete and the materials should be chosen with greater care according to its special properties.
The analysis of the specimens have called the attention that for all the mixtures with residues related to Compression Tests and TensileStrength Tests the mechanical properties have been smaller compared to the reference concrete, although this would not affect its use in structures since the results are within the parameters demanded by the Brazilian norm NBR 6118 [19], where concretes above 20 MPa can be used as structural concretes.
M.Attainment of self-compacting concrete using granite and marble residues and evaluation of its mechanical properties. 2004.
Contribution to the study of self-compacting concrete properties aiming its application in structural elements. 2006.

Alkali activator activity has significant effects on the mechanical properties, microstructure, and durability of solidified sandy soil[5],[16]-[17][18].
Materials and Methods Soil properties.
Influence of Pozzolanic Material Reactivity on Mechanical Properties of Solidified Soil Stress-strain relationship of solidified soil.
The pozzolanic reaction activity of FA is lower than that of GBFS, resulting in the slower alkali-activation process, indicating that the content of silico-aluminum in the pozzolanic material is not a decisive factor in the mechanical properties of the solidified soil.
Haddad, Mechanical and Durability Properties of Poorly Graded Sandy Soil Stabilized with Activated Slag, J.

Research on Fiber Preparation Section with Life Cycle Assessment Theory Jie Song1, a, Na Jia2,b , Bing Ge3,c and Jun Hua4,d 1 College of Mechanical and Electrical Engineering ,Northeast Forestry University Harbin Heilongjiang, 150040 2 College of Mechanical and Electrical Engineering ,Northeast Forestry University Harbin Heilongjiang, 150040 3 College of Mechanical and Electrical Engineering ,Northeast Forestry University Harbin Heilongjiang, 150040 4 College of Mechanical and Electrical Engineering ,Northeast Forestry University Harbin Heilongjiang, 150040 asongj2017@sina.com, b jiana1975@sina.com, cgebing2012@sina.com,dhuajun81@163.com Keywords: Fiber Preparation Section, Life Cycle Assessment, Environment Load Factor, Technology and Equipment Abstract.
Thus, the environment load factor of each process can be determined, as shown in Table 1.
At present, the main characterization models are load model, SETAC equivalent model, inherent chemical properties model, overall exposure - effect model, point-source exposure-effect model, etc.
Through an in-depth analysis to the fiber preparation section, the environmental load factors are determined.
In all, with the theoretical framework system of the fiber preparation section, as well as the end-based evaluation methods, the extent of the environmental impact affected by the different production techniques and devices match is evaluated.

The effectiveness of the LBC process depends upon the thermal properties and to some extent optical properties, rather than mechanical properties of the material to be cut.
Therefore, materials which exhibit a high degree of brittleness or hardness and have favorable thermal properties such as low thermal diffusivity and conductivity are well suited for LBC.
Moreover, modeling all these factors using conventional, analytical and numerical methods poses a substantial challenge.
ANFIS are fuzzy systems which use theory of ANNs in order to determine their properties through processing of data samples.
ANFIS harness the power of the FL and ANNs through utilizing the mathematical properties of ANNs in tuning rule-based fuzzy systems that approximate the way human’s process information.

Introduction Composites present a range of advantageous properties, including – but not limited to – their light weight and excellent mechanical characteristics, that make them a sought-after material for the construction of aircraft structures [1,2,3].
As such, an array of factors in addition to the ones identified in the presented study can influence the specific results.
Gopal, in: Advanced Composite Materials for Aerospace Engineering – Processing, Properties, and Applications, edited by S.
Gibson: Fire Properties of Polymer Composite Materials (Springer, The Netherlands 2006)
[19] ASTM International: ASTM D3039/D3039M – 17: Standard Test Method for Tensile Properties of Polymer Matrix Composite Materials (2017)

The theme of this paper concentrates on hydro- projects’ seepage field in rocks, including the properties of the seepage which flow through both hole qualitative like rocks and fractured rocks.
Seepage is an important factor which influences the distortion and stress state of the Dam, as well as the stability of the skewbacks.
The curtain is the important factor to influence seepage field, so we calculate the curtain that is 82 meters and 46 meters wide respectively[3], the curtain thickness is 4-5m.
Main physical mechanical parameters of rock 82m curtain 46m widened curtain Dam foundation 0.52 0.523 Left abutment 0.487 0.479 Right abutment 0.458 0.451 Result Analysis Head contour and the known head boundary and impervious boundary are mutual Perpendicular.
The shoulder of dam circle seeping is the important factors to affect abutment stability.

Membrane is the key that restrict Membrane Bioreactor technology be extensive applied, the membrane flux is an important factor to measure membrane, membrane fouling is the main factor which result in the membrane flux low, the membrane fouling research on a new type of hydrophilic PVA membrane .The experiment results show that the membrane flux is high with the use of PVA membrane.
Key factor in the current constraints of the MBR is the high cost of membrane modules, and the membrane material with the real resistance to pollution, aperture small, hydrophilic and easy to clean has not yet widely used [2].
Fig.2 Effect of COD removal Fig 3 Membrane flux’s change while starting circulate Membrane fouling MBR membrane fouling is running a series of factors that collectively increase the membrane resistance.
Conclusion There are many factors that affect the membrane fouling.
Membrane material properties, shape of the membrane, etc., membrane fouling have some role in the implementation of reasonable mitigation measures, the present study, the polyvinyl alcohol (PVA ) membrane can get a good stable membrane flux, the average flux 168 L/m2.h, membrane flux can be recovered after the decay, recovery rate is 94%.

After applying the repeated hot-then-cold stresses to the post-irradiated Invar sheets, the springback factors are first restored to the value of fresh Invar, and then revert to an increasing trend.
Results and discussions We adopt the springback formula developed by Tseng et al to evaluate the mechanical springback behaviors of the Invar sheets [12, 13].
Unlike very high energy cosmic-charged particles in the GeV range (which most likely produce structural changes in the metal alloy), the moderate energy in the MeV range of gamma-ray ionizing radiation most seriously affects dielectric materials.
Further increasing the number of hot-then-cold cycles increasingly degraded the mechanical springback characteristics of the Invar sheets.
Lyman (ed), Metals Handbook, Vol.1, Properties and Selection of Metals, ASM, 8th edn. (1961) [2] D.L.

Introduction Multiwall carbon nanotubes (MWNT), a promising reinforced component, are widely used in almost every polymer matrix owing to its excellent properties such as high mechanical strength, thermal conductivity and electrical conductivity [1-4].
Owing to the remarkable intrinsic properties MWNT exhibited, it was believed that the incorporation of MWNT in polymer matrix should lead to composites with unique properties.
Investigation was focused on electronic properties and SEM micrograph of MWNT reinforced polyacrylonitrile fibers.
However the thermal and flame retardant properties of MWNT reinforced polyacrylonitrile have not reported by reference.
While in many applications especially for electrical and electronic devices, both flammability and electrical properties are essential.

The part durability with the placed covering depends on the technology of spraying and the properties of the sprayed material.
The following parameters are selected as changeable factors of optimization: arc thickness; pressure of compressed air; spraying distance.
This selection is based on the fact that these factors have significant effect on the dispersion process of a wire.
Except for the specified changeable factors, such constant factors as the stream tilt angle to the substrate (base) is 90°, the angle between the electrodes is 30°.
In this case the properties of the part material significantly differ from the properties of the initial surface.