scholarly journals The Size Effects of Earth Pressure Cells on Measurement in Granular Materials

2003 ◽  
Vol 43 (5) ◽  
pp. 133-147 ◽  
Author(s):  
Kinya Miura ◽  
Natsuhiko Otsuka ◽  
Eiji Kohama ◽  
Chairat Supachawarote ◽  
Tsuyoshi Hirabayashi
Keyword(s):  
Granular Materials ◽  
Size Effects ◽  
Earth Pressure

Study of In Situ Mechanical Response of Asphalt Concrete Pavement with Granular Base

2013 ◽  
Vol 405-408 ◽  
pp. 1891-1895
Author(s):  
Peng Shen
Keyword(s):  
Granular Materials ◽  
Stress Level ◽  
Mechanical Response ◽  
Earth Pressure ◽  
Pressure Cell ◽  
Base Course ◽  
Granular Base ◽  
3D Finite Element Method ◽  
Asphalt Concrete Pavement

As elastic modulus of unbounded granular materials is strongly influenced by stress level, pavement structure parameters must be taken into account in its modulus determination. It is found that the backcalculated modulus of granular base vary according to the layer on which FWD is tested, which verifies the fact that unbounded granular materials is strongly influenced by stress level. And an earth pressure cell that is applied to acquire compressive stress conducting to granular base course when the pavement is subjected to vehicle load is buried on the top of granular base course. The backcalculated modulus is then applied to analyze mechanical response of the pavement by 3D finite element method. At last, the calculated result is compared to the dynamic response acquired in-situ by earth pressure cell.

DEM analysis of the size effects on the behavior of crushable granular materials

2016 ◽  
Vol 18 (3) ◽  
Author(s):  
Wei Zhou ◽  
Lifu Yang ◽  
Gang Ma ◽  
Xiaolin Chang ◽  
Zhiqiang Lai ◽  
...  
Keyword(s):  
Granular Materials ◽  
Size Effects ◽  
Dem Analysis

Evolution of the earth pressure coefficient of carbonate sand undergoing varying rate of dissolution

2022 ◽  
Vol 12 (1) ◽  
pp. 1-16
Author(s):  
P. Viswanath ◽  
A. Das ◽  
G. Buscarnera
Keyword(s):  
Granular Materials ◽  
Chemical Weathering ◽  
Pressure Coefficient ◽  
Earth Pressure ◽  
Physicochemical Interaction ◽  
Waste Products ◽  
Natural Processes ◽  
Granular Assemblies ◽  
Rate Of Dissolution ◽  
Reactive Fluids

In fluid-saturated granular materials, the physicochemical interaction between pore-fluids and grain minerals alters packing conditions, which in turn leads to stress change deformation and, in extreme cases, even collapse. Chemical weathering, either naturally occurring or induced by human activities, is among such natural processes. This article presents an experimental study illustrating the major effects of chemical weathering on the deformation and stress state of granular materials, emphasising particulate systems entirely made by highly soluble carbonate grains. Laboratory experiments are conducted by subjecting acidic environments to granular assemblies under oedometric condition. The reaction rate is controlled by regulating various testing parameters, such as acid concentration and pore fluid flow rate. Experiments revealed that the lateral earth pressure steadily reduces in some cases, while others exhibit non-monotonic evolution. From a macroscopic standpoint, the rate of the chemical reaction was critical to determine the emergence of either of these trends. Such findings are relevant for any particulate system in which the stress conditions are controlled by multi-physical processes proceeding at different rates, such as waste products within bioreactors, gouge materials within faults and natural deposits subjected to the injection/extraction of reactive fluids.

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