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