magic m onitoring systems to a ssess g eotechnical i nfrastructure subjected to c limatic hazards...
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MAGIC
MONITORING SYSTEMS TO ASSESS GEOTECHNICAL INFRASTRUCTURESUBJECTED TO CLIMATIC HAZARDS
European Commission - FP7Marie Curie Industry-Academia Partnerships and Pathways (IAPP)
http://www.magic-iapp.com/
MID-TERM REVIEW MEETING
Fellow background
MAGIC - Monitoring systems to Assess Geotechnical Infrastructure subjected to Climatic hazards Mid-Term Review Meeting - Brussels, 17 November 2014
Status: ERRecruiting institution: TUD – Delft University of Technology Recruitment period: 01.10.2014 – 30.09-2016
• 2009.9- 2013.1 The Hong Kong University of Science and Technology
Behavior of saturated and unsaturated coarse widely graded soils under low confining pressures
• 2013.5 – 2014.5 Norwegian Geotechnical Institute (NGI) Thermo-Hydro-mechanical behaviour of soft soils
Work package addressed
MAGIC - Monitoring systems to Assess Geotechnical Infrastructure subjected to Climatic hazards Mid-Term Review Meeting - Brussels, 17 November 2014
Tensiocone, WP2
UMS(SME)
Tecno-Penta(TP-SME)
Pessl Instrument(PESSL-SME)
G Impuls (GI-SME)
University of Strathclyde (USTRAT
Université de Pau (UPPA) Delft University of Technology (DUT)
High-Capacity Tensiometer, WP1
Data Control Software, WP4
Geophysical imaging of water content, WP3
Task(s) addressed
MAGIC - Monitoring systems to Assess Geotechnical Infrastructure subjected to Climatic hazards Mid-Term Review Meeting - Brussels, 17 November 2014
Tasks
T.2.3 Validation in calibration chamber. Test Tensiocone in calibration chamber. Test Tensiocone in the positive range as well as in the negative range in unsaturated silt samples. Test the response under dynamic conditions.
T.5.3 Data collection and processing. Develop a web-platform for data access by all partners and process data for cross-check and modelling.
Deliverables:
D.2.3. Final design of tensiocone
D.5.3. Comparative analysis of instrument response in the field
Real scale field test site:Leendert de Boerspolder
• Effect of climate: soil-atmosphere-vegetation interaction on the durability of the flood defence system (hydromechanical behaviour in saturated and unsatured conditions in soft clays and organic soils)
• Insight into complementary non invasive techniques for infrastructure (hydro-electrical behaviour)
MAGIC - Monitoring systems to Assess Geotechnical Infrastructure subjected to Climatic hazards Mid-Term Review Meeting - Brussels, 17 November 2014
Laboratory Physical Modelling:
• Setting up a calibration chamber for the tensiocone
• Providing the necessary support for thermo-hydro-mechanical characterisation of the relevant soils
MAGIC - Monitoring systems to Assess Geotechnical Infrastructure subjected to Climatic hazards Mid-Term Review Meeting - Brussels, 17 November 2014
Element testing:Saturated and unsaturated hydro-
mechanical(and electrical) behaviour of organic soils
and soft clays
MAGIC - Monitoring systems to Assess Geotechnical Infrastructure subjected to Climatic hazards Mid-Term Review Meeting - Brussels, 17 November 2014
• Triaxial testing of organic soils under saturated conditions
• Bring back into operation and upgrading of a triaxial device for unsaturated testing
• Upgrading an oedometer for electrical characterisation
• Characterising the hydraulic and the retention properties of organic and fibrous soils
Retention and hydraulic conductivity of organic soils
MAGIC - Monitoring systems to Assess Geotechnical Infrastructure subjected to Climatic hazards Mid-Term Review Meeting - Brussels, 17 November 2014
• Need for shrinkage curves to properly interpret the retention data
• Improving the procedures for saturation of the tensiometers in the Hyprop device.
• Characterising the hydraulic and the retention properties of organic and fibrous soils
Preliminary results on retention and hydraulic conductivity of organic soils
MAGIC - Monitoring systems to Assess Geotechnical Infrastructure subjected to Climatic hazards Mid-Term Review Meeting - Brussels, 17 November 2014
0 4 8 12 16 20
water ratio, ew (-)
0
4
8
12
16
20
void
rat
io, e
(-)
WJ_H4
WJ_H2
0 4 8 12 16 20
void ratio, e (-)
0
0.2
0.4
0.6
0.8
1
satu
ratio
n de
gree
, Sr
(-)
WJ_H4
WJ_H2
MAGIC - Monitoring systems to Assess Geotechnical Infrastructure subjected to Climatic hazards Mid-Term Review Meeting - Brussels, 17 November 2014
0 2 4 6 8 10 12 14 16 18
water ratio, ew (-)
1
10
100
1000
10000
100000
suct
ion,
(
kPa)
WJ_H4 first drying
WJ_H4 second drying
WJ_H4 dew point
WJ_H2 first drying
WJ_H2 second dryingWJ_H2 third drying
WJ_H2 fourth drying
WJ_H2 dew point
shrinkagesaturated
shrinkagedrying
0.8 0.9 1
saturation degree, Sr (-)
1
10
100
suct
ion,
(
kPa)
Drying Data
WJ_H2 first drying
WJ_H2 second drying
VG_D1
VG_D2
Preliminary results on retention and hydraulic conductivity of organic soils
Outlook of future career
MAGIC - Monitoring systems to Assess Geotechnical Infrastructure subjected to Climatic hazards Mid-Term Review Meeting - Brussels, 17 November 2014
Benefits from MAGIC project
• Improve skills on field study and physical modelling and numerical analysis
• Improve knowledge and testing protocols for organic fibrous soils
• Linking thermo-electro-hydro-mechanical properties to innovative solutions for field instrumentation and monitoring
• Networking with academia and industry partners
• Improving scientific output both in terms of publications and in widening the scientific perspectives
• Bringing element testing into implementation in the practice: instrumentation, monitoring, assessing infrastructures