This study aims to investigate the one-way cyclic lateral responses of piles in sloping ground by means experimental and theoretical analyses. For this purpose, a series laboratory model experiments were performed for different cases cycle number, load amplitude, slope angle, static loading tests on both level conducted comparison. Based these observations, effects angle pile head deflection pr...

It has been suggested that the slightly endothermic reaction between H and DCN to produce HCN and D serves to deplete DCN in hot core regions of giant molecular clouds. We have calculated the rate of this reaction for a range of temperatures up to 500 K with a combination of ab initio quantum chemical and dynamical techniques. We find that the reaction has two potential barriers lying between t...

The main purpose of our project is to test the improvement in CALIFORNIA BEARIBG RATIO SUBGRADE SOIL upon usage GEOTEXTILE layer soil. We planned effect geotextile under different conditions placement height, soil characterstics and moisture content. performed experiments laboratory determine results variation CBR value plotted it draw inferences. Key Words: CBR, Geotextile, Subgrade, Moisture ...

Based on the method of BP neural network,a foundation settlement of BP neural network prediction model was established for a railway subgrade in HeFei area China. In the model, the previous field monitoring data was used as the training sample and the later settlement was predicted. The model was used for four test sections of the railway subgrade. The results showed that for the four test sect...

The purpose of this study was to evaluate the feasibility large-scale application steel slag (SL) in subgrade. Subgrade materials with three kinds SL proportions were first prepared. Then, a compaction test, liquid-plastic limit combined-measurement and California bearing ratio (CBR) test applied determine best proportion between intact soil (S), i.e., SL/S. Subsequently, static dynamic tests v...

A typical flexible pavement structure consists of the surface, base, sub-base and subgrade soil. The loading traffic is transferred from the top layer with higher stiffness to the layer below with less stiffness. Under normal traffic loading, the behaviour of flexible pavement is very complex and can be predicted by using the repeated load triaxial test equipment in the laboratory. However, the...

A kinetic model of the Boltzmann equation for chemical reactions without energy barrier is considered here with the aim of evaluating the reaction rate and characterizing the transport coefficient of shear viscosity for the reactive system. The Chapman-Enskog solution of the Boltzmann equation is used to compute the chemical reaction effects, in a flow regime for which the reaction process is c...

When the depth of stressed soil is rather small, Plate Load Test (PLT) becomes most efficient test to estimate properties for design purposes. Among these properties, modulus subgrade reaction important one that usually employed in roads and concrete pavement design. Two methods are available perform PLT: static dynamic methods. Static PLT adopted due its simplicity time saving be performs comp...