COBBAUGE KICK-OFF EVENT

28th November 2017

Plymouth University

RÉUNION DE LANCEMENT COBBAUGE

Any reproduction is strictly prohibited - Toute reproduction est strictement interdite - Any reproduction is strictly prohibited

Introduction of CobBauge project

Présentation du projet CobBauge

28/11/2017 2 Kick-off event

Malo Le Guern

Ecole Supérieure

d’Ingénieurs des Travaux

de la Construction de Caen

Any reproduction is strictly prohibited - Toute reproduction est strictement interdite - Any reproduction is strictly prohibited

Technical aspects of cob

• Cob components

Kick-off event 28/11/2017 3

Aspects techniques de la Bauge

Soil Straw Water

Any reproduction is strictly prohibited - Toute reproduction est strictement interdite - Any reproduction is strictly prohibited

Technical aspects of cob

• Soil characterisation :

Particle Size Distribution « ISO 13320 »

Kick-off event 28/11/2017 4

Aspects techniques de la Bauge

3 % 18 %

d > 80 µm d < 80 µm

Mechanical sieving Laser diffraction Particle size distribution of several soils

Any reproduction is strictly prohibited - Toute reproduction est strictement interdite - Any reproduction is strictly prohibited

Technical aspects of cob

• Soil characterisation :

Clay activity (shrinkage/swelling) « NF P94-068 & NF P94-051 »

Kick-off event 28/11/2017 5

Aspects techniques de la Bauge

3 % 18 % Filter paper

Methylene blue value Atterberg’s limits

Any reproduction is strictly prohibited - Toute reproduction est strictement interdite - Any reproduction is strictly prohibited

Technical aspects of cob

• Soil characterisation :

Proctor test « NF P94-078 »

Kick-off event 28/11/2017 6

Aspects techniques de la Bauge

18 %

Automatic compactor Atterberg’s limits

Any reproduction is strictly prohibited - Toute reproduction est strictement interdite - Any reproduction is strictly prohibited

Technical aspects of cob

• Fibre characterisation :

Tensile strength

Kick-off event 28/11/2017 7

Aspects techniques de la Bauge

3 % 18 %

Tensile strength test Fibres’ tensile strength test

Any reproduction is strictly prohibited - Toute reproduction est strictement interdite - Any reproduction is strictly prohibited

Technical aspects of cob

• Fibre characterisation :

Water absorption

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Aspects techniques de la Bauge

3 % 18 %

Immersed fibres

Water absorption of flax and straw

Any reproduction is strictly prohibited - Toute reproduction est strictement interdite - Any reproduction is strictly prohibited

Technical aspects of cob

• Samples:

Kick-off event 28/11/2017 9

Aspects techniques de la Bauge

3 % 18 %

Cylindric Prismatic Cubic

Any reproduction is strictly prohibited - Toute reproduction est strictement interdite - Any reproduction is strictly prohibited

Technical aspects of cob

• Cob characterisation :

Compressive strength

Kick-off event 28/11/2017 10

Aspects techniques de la Bauge

3 % 18 %

Compressive strength test Cob’s compressive strength test

Any reproduction is strictly prohibited - Toute reproduction est strictement interdite - Any reproduction is strictly prohibited

Technical aspects of cob

• Cob characterisation :

Bending strength

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Aspects techniques de la Bauge

3 % 18 %

Four point bending strength test Cob’s compressive strength test

Any reproduction is strictly prohibited - Toute reproduction est strictement interdite - Any reproduction is strictly prohibited

Technical aspects of cob

Kick-off event 28/11/2017 12

Aspects techniques de la Bauge

3 % 18 %

• Cob characterisation :

Thermal conductivity

18 %

Hot wire conductivity meter

« NF B40-316 » Heat flux transducer

« NF EN 12667 »

Any reproduction is strictly prohibited - Toute reproduction est strictement interdite - Any reproduction is strictly prohibited

Technical aspects of cob

Kick-off event 28/11/2017 13

Aspects techniques de la Bauge

3 % 18 %

• Cob characterisation :

Hygrometric properties « NF EN ISO 12571 »

18 %

Dynamic Vapour Sorption analyser Example of cob’s hygrometric hysteresis

Any reproduction is strictly prohibited - Toute reproduction est strictement interdite - Any reproduction is strictly prohibited

Technical aspects of cob

Kick-off event 28/11/2017 14

Aspects techniques de la Bauge

3 % 18 % 18 %

Knowledge of

fibres’ influence

Manufacturing

process

optimisation

Determine the

ideal type of soil

Determine 4

optimal Cob

mixes

Any reproduction is strictly prohibited - Toute reproduction est strictement interdite - Any reproduction is strictly prohibited

Follow the project

CobBauge Project

http://www.cobbauge.eu/

News

Events

Documentation

Trainings

And more !

Kick-off event 28/11/2017 15

Suivez nos travaux

Any reproduction is strictly prohibited - Toute reproduction est strictement interdite - Any reproduction is strictly prohibited

Thank you for your attention Merci de votre attention

Any reproduction is strictly prohibited - Toute reproduction est strictement interdite - Any reproduction is strictly prohibited