Environmental Engineering Reference
In-Depth Information
12
Unsafety side
Safety side
11
α = 1
α = 1.5
α = 2
10
9
8
7
6
5
4
3
2
1
0
0
Distances
Figure 6.
statistical analysis for different values of α. The distance is the difference between real and calculated pres-
sure values.
in principle the suggestion is to adopt:
G
= 30 kn/m
3
,
α
= 1 (for best fit) or
α
= 2 (safest
value for applications) and
L
= 0.433, as from the
fit carried out on the pyroclastic samples from the
canary islands.
at the ceDeX Geotechnics laboratory
research is being carried out on canary islands
pyroclastic samples and on artificial samples with
a view to obtaining greater reliability in these
parameters.
serrano, a. olalla, c., Perucho, a. & hernández, l.
2007. strength and deformability of low density
pyroclasts.
ISRM International Workshop on Volcanic
Rocks
. Ponta Delgada, azores, 14 July, 2007.
serrano, a., Perucho, a., olalla, c. & estaire, J. 2007.
Foundations in Volcanic areas.
XIV European Confer-
ence on Soil Mechanics and Geotechnical Engineering.
Geotechnical Engineering in Urban Environments
.
Madrid, 24-27 september, 2007.
santana, M de santiago, c., Perucho, a. & serrano, a.
2008. Relación entre características químico-mineralóg-
icas y propiedades geotécnicas de piroclastos canarios.
VII Congreso Geológico de España.
Geo-Temas 10. las
Palmas de Gran canari
a
, July, 2008.
ReFeRences
ceDeX, 2007. caracterización geotécnica de los piro-
clastos canarios débilmente cementados.
Final report
april, 2007.
