In order to study uniaxial compressive strength of the recycled lightweight aggregate cement mortar test cubes, replacement rate of recycled lightweight aggregate was selected as variables factors, uniaxial compression test of cement mortar was carried out with the use of five different recycled lightweight...

The paper background is based on the soft rock slope of Yizhou--Liuzhai highway in Guangxi province. Polymer cement curing agents are used to reinforcement the soft rock slope to prevent or slow the soft rock slope softening and disintegration, improve long-term stability of soft rock slope engineering....

The synergy of fatigue load and corrosion can affect the mechanical properties of the steel bar, and accelerate its fracture damage. On the basis of different cycles of fatigue load on the bar, four-month corrosion under the action of acid or alkali medium test was carried out. Then the synergy effect...

To investigate the effect of vacancy concentrations on mechanical properties of single crystal -TiAl, the uniaxial tension tests of -TiAl alloy models at different vacancy based on molecular dynamics simulation was performed. The results shows that obvious brittle behavior in stress-strain curve and...

In order to clarify the creep deformation and fracture behaviors of ultra-purified ferritic stainless steel 429Mo for automotive exhaust systems, the creep behaviors of 429Mo steel at 650øC and different applied stress levels were investigated through performing the creep tests and the microstructural...

The ion nitrocarburized layer was prepared on the surface of 42MnCr52 steel sample by using the ion nitrocarburizing process. The nitrocarbonide grains and holes all in smaller scale distribute equably. The nitrocarbonide surface layer is about 18 æm in thickness. The ion nitrocarburized layer is composed...

High temperature aging method was used to accelerate the aging process of 12Cr1MoV steel which is mainly used as pressure vessel, steam pipes and so on. The evolution of the microstructure and mechanical property was systematically investigated during the process. It is revealed that during the aging...

Due to the poor workability of recycled concrete caused by heavy water absorption, coarse surface and multiple spaces of recycled coarse aggregate, it is proposed that pre-allocated self-compacting mortar shall be adopted to prepare recycled concrete, which solves such problems arising from poor workability...

This study evaluates the effects of fly ash microsphere (FAM) on the flowability and cohesiveness performance of cement paste. FAM is a superfine fly ash captured from the coal-fired power stations. It has a mean particle size of around 2 mm and is of spherical shape. An experimental program comprising...

Nb-Al alloy compounds are expected to be high temperature structural materials. However, the low toughness and poor oxidation resistance are the main obstacles to hinder Nb-Al intermetallics from applications. In this paper, a new monoclinic phase of NbAl3 was proposed by particle swarm optimization....

In this paper, we researched the influence of tensile rate on the tensile fracture process of PA6. The results showed that with the increase of tensile rate, the yield strength of PA6 was on the rise, and the elongation at break was on the decline. The elongation at break declined sharply when the tensile...

The torsion behavior tests on Mg-Gd-Y-Zr magnesium alloy have performed before and after liquid nitrogen cryogenic treatment (CT) by torsional test machine. The experimental results show that the torsional strength and plasticity of the alloys have been significantly improved after CT 72h and 96h, compared...

Fatigue failure is one of the main reasons for the engineering structure's failure, and it is of great significance to predict fatigue life of structure. This paper briefly introduced the principle of stochastic fatigue failure calculation analysis, andÿanalyzed random vibration of aÿT-shaped structure...

Adjacent concrete box-beam bridges are widely used in short and medium span bridges. However, this bridge system has long term durability issues caused by shear key failure and reflective cracking in the upper. This paper investigates a new maintenance method of shear key joint. High performance grouting...

The transient damage problems of copper alloys are the central topic for improving the accuracy and lifetime of electromagnetic launcher. The research works on transient damage behaviors of copper alloys under high-speed sliding electrical contact during the past two decades were summarized in this paper...

The distribution of aggregates is intensive at the bottom of concrete model but scarce at the top position when polygon aggregates are packed by traditional random walking algorithm. In order to simulate the randomness of aggregates distribution more effectively and realistically, a bidirectional walk...

25 groups of GAC-20 modified asphalt mixture are designed by referencing the orthogonal design method, the high temperature rutting test are carried out , the related model of the fractal dimension and the high temperature performance evaluation index dynamic stability is established by using fractal...

In this paper, a nonlinear line-spring model with new plastic constitutive relations for the line-spring is presented based on the fully plastic solutions of the single-edge cracked strip subjected to pure tension and pure bending. Numerical solutions of J-integral which characterizes the amplitude of...

The exploration and research have been further developed on Bionics principle in the felidof new wood composites preparation. Originally, the preparation ideas of gel-type wood composite material is based on utilizing the natural wood material which is formed during the long-term evolution of biological...

The influence of different strength (0-1.4T) of DC magnetic field on crystal orientation and mechanical properties of remelting Mg-Y-Cu-Zr alloy reinforced by long period ordered structure were studied. The results show that with the increase of strength of magnetic field, primary phase and second phase...