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Effects of Granite Sourced from Selected Locations in Ogbomoso, Nigeria on the Properties of Concrete A.A.
The source of aggregate will definitely have effect on its properties.
The factors that guide the selection process for the sites is geographical location and quantity of granite produced.
Properties of concrete, Fourth edition, Prentice Hall: Pearson Education Limited
[15] J S Bowles Engineering Properties of Soil and Their Measurement, 4th edition.

Low temperature in situ synthesis method is an effective way to obtain biomimetic nanoHA/COL composites with good homogeneity and mechanical properties [2].
Factors and levels used in this experiment are shown in Table 1.
There are three factors, each of which can be set at three different levels.
The greater the bending strength, the better the mechanical property of the composite is.
Factors and levels used in this experiment of the composites and synthesis pH.

Results and discussion Microstructure and mechanical properties.
Table 2 show a summary of the mechanical properties obtained from the curves of Fig. 4.
These ratios are obtained from comparing the mechanical properties obtained in the NS4 solution with the mechanical properties obtained in the controlled environment (air).
Mechanical properties obtained from the SSR tests to assess the SCC.
The material susceptibility to SCC depends of many factors such as elemental composition, metallurgical factors, inclusions content, mechanical properties, physicochemical environment, pH and residual stresses mainly [15].

The general objective of the present work is to study the brittle fracture of the coarsegrain heat-affected zone (CGHAZ) of a C-Mn steel.
In order to validate this model, fracture mechanical test specimens (3-point bend) have been tested at different low temperatures; temperature dependence of fracture toughness was obtained.
The arresting stress intensity factors considered were the following: m/m IaK is the crack arrest ability at the boundaries of the bainitic packets, c/m IaK is the crack arrest ability at the carbide/bainite boundary, p/m IaK is the crack arrest ability at the pearlite/bainite boundary, α I is the fracture probability of a particle (carbide or pearlite colony) of the mean size.
The model takes into account the effect of the temperature over the controlling factor of the toughness.
References [1] Kenji Ohya, Jongseop Kim, Ken'Ichi Yokohama y Michiko Nagumo, "Microstructures relevant to brittle fracture initiation at the Heat-Affected-Zone of Weldment of a Low Carbon Steel", Acta Metall., 27A, pp. 2574-2582 (1996) [2] Akelsen, O.M., Grong, O. y Solberg, J.K., "Structure property relationships in intercritical heat affected zone of lowcarbon microalloyed steels", Materials Science and Technology, vol.3, pp. 649-655(1987) [3] Martin-Meizoso, A., Ocaña-Arizcorreta, I., Gil-Sevillano, J. y Fuentes-Pérez, M., "Modelling cleavage fracture of bainite steels", Acta Metall.

Though laser power has been known as a major factor affecting these responses, the detailed investigations of this factor on cut geometries and surface quality have still been deficiency.
However, the laser cutting performance for silicon can be varied by many factors, needing an insight investigation and process optimization for each particular case.
Laser power is the major parameters directly affecting the heat input during the laser cutting process.
The properties of silicon are given in Table 1.
Properties of monocrystalline silicon.

In this paper we present the key factors for vulnerability modeling of historical buildings caused by dynamic loading.
These factors are: 1.
Likewise, buildings located close to major transportation routes or industrial properties, such as nuclear power plants or hazardous petroleum/chemical plants, are vulnerable if a major accident were to occur there. 3.
All offer different challenges based on factors specific to their occupancy.
Dynamic properties have a major role on the seismic behavior and vulnerability of building structures.

Die-cast Magsimal-59 has excellent mechanical properties when the cast product is thin, as the mechanical properties of Mgsimal-59 depend on the thickness of the cast product.
The mechanical properties of the specimens were investigated by tension testing.
These mechanical properties are very poor.
This means that the effect of the cooling ratio on the mechanical properties is very large and the mechanical properties of the Al–4.8%Mg–2%Si are very sensitive to the cooling rate.
In the casting of the Al–4.8%Mg–2%Si, the size of the ingot appears to have been the dominant factor determining its mechanical properties.

Hierarchy of mappings from process route to microstructure to properties to performance.
Uncertainty in assigning local properties of phases is significant.
Materials design typically involves multiple objectives mapping into several property domains; for example, gas turbine engine blades involve thermal, chemical, mechanical and thermomechanical properties.
Relevant examples of noise factors are variation of ambient temperature, morphology changes, etc.
Y X Type I, II, III Robust SolutionUpper Limit Lower Limit Deviation or Objective Function Deviation at Optimal Solution Deviation at Type I, II Robust Solution Deviation at Type I, II, III Robust Solution Design Variable Type I, II Robust Solution Optimal Solution Y X Type I, II, III Robust SolutionUpper Limit Lower Limit Upper Limit Lower Limit Deviation or Objective Function Deviation at Optimal Solution Deviation at Type I, II Robust Solution Deviation at Type I, II, III Robust Solution Design Variable Type I, II Robust Solution Optimal Solution y = f(x,z) x= Control Factors z= Noise Factors y= Responses y = f(x,z) x= Control Factors z= Noise Factors y= Responses y2 = g(y,z) z2= Noise Factors y2= Responses y2 = g(y,z) z2= Noise Factors y2= Responses Design 1 Design 2 Constraint boundary : Feasible region : Infeasible region x space y space y2 space Design 1 Design 2 Constraint boundary : Feasible

Introduction Toughness is one of important mechanical properties in structural applications of thermosets and has been an issue for improvement since 1970s [1].
When a cracked solid contains residual compressive stresses around micro-spheres as illustrated in Fig. 1, however, it is also affected and then manifested as non-linearity.
A crosshead speed of 10 mm/min was adopted for tests of the flexural properties and 0.5 mm/min for mode I fracture tests at a room temperature of 21°C.
Mechanical properties of ME and MEH epoxy systems.
Specific EXPANCEL fracture energy Flexural strength Elasticity modulus (phr) GIC (kJ/m 2) (MPa) (GPa) ME MEH ME MEH ME MEH 0 0.31 0.64 130.65 131.04 1.42 1.50 5 1.61 116.08 1.25 10 1.06 1.96 67.16 102.52 1.60 1.11 15 2.61 90.27 1.10 20 1.99 4.29 62.24 34.78 1.21 0.85 25 2.89 43.36 0.95 30 1.59 3.89 63.34 24.67 1.07 0.69 35 3.31 29.74 0.67 40 1.80 3.30 62.53 29.22 1.09 0.65 45 3.36 23.28 0.56 50 1.08 2.89 55.20 22.58 0.92 0.54 Results and Discussions Some mechanical properties for both ME and MEH series are given in Table 1.

Analysis on influencing factors of cement stabilized macadam base of compressive strength in Shenyang area Yan Xu1, a, Chunzhen Bai1,b , Yifang Zhang1,c , Xiao Liu1,dandDi Li1,e 1 Shenyang Jianzhu University, Shenyang, Liaoning province, 110168, China axy_zsl@163.com, b1039471842@qq.com, c786898732@qq.com, d10732420@qq.com, e1061825140@qq.com Keywords: grain size distribution, forming method, curing age, strength influencing factors Abstract.
However, there are many and complex factors which can affect the strength of cement stabilized macadam roadbase.
Raw material properties Table 1 Raw material sampling Number Mixing station Construction route Particle size composition(cm) Stone origin 1 Shenbeicui gongbao Pingwang route,Nongwang engineering 1~3,1~2,0.5~1;attle Tieling 2 Shenyan Shenyan route 1~3,1~2,0.5~1;attle Fushun 3 Xinmin Jiangzhang route 1~3,0.5~1;attle Tieling 4 Hunnansifang Xinlibao route mixture, attle Liaoyang 5 Hunnanlixiang Shenli route, Yonghong route 6 Liaozhong Gaonen route Analysis of the formation mechanism of the strength of cement stabilized gravel Table 1 shows.
Therefore, considering the shrinkage cracks and other factors, suggestions appropriate to reduce the dosage of cement in engineering.
With increasing age, the strength of cement stabilized gravel affected by the degree of compaction shows a decreasing trend.