Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Experimental Test of the validity of "Isotropic" Approximation for the
  Mechanical Behaviour of Clay   Experimental data from axially symmetric compression test at constant mean
pressure p on kaolinite clay are used to study the validity of an "isotropic"
modelling as a function of the overconsolidation ratio (OCR).The isotropic
assumption is found to be quite good for 2<OCR<3 and/or in the range of small
deformation for OCR>4. For very large OCR (OCR >10), anisotropic response is
observed at few percents of axial deformation. Relation with anisotropic
distribution of local forces is made. Pacs # : 5.40 ; 45.70 ; 62.20 ; 83.70.Fn

7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat