This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
H2020 Innovation ActionEeB-01-2014: Materials for building envelope
ERA-CAN Workshop
University of Bath, 7-8 June 2016
02/08/2016
Dr Mike Lawrence
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Overview
Development and Demonstration of Highly Insulating Construction Materials from bio-
derived aggregates
• 48 months
• 12 Partners
• 6 countries
• UK, France, Germany, Norway, Spain, Belgium
• €6.32m cost (€5.47m grant)
02/08/2016 2
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Work Packages
• WP1-5 - Aggregate and binder characterisation and development
• WP6 - Industrialisation of components and panels
• WP7 - Demonstration
• WP8 – LCA and cost analysis
• WP9 – Communication, dissemination & exploitation
• WP10 – Consortium management
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This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Aggregates
22 different materials
• Corn cob
• Oil seed rape straw (2 sizes)
• Wheat straw (4 sizes)
• Hemp straw (4 sizes)
• Flax straw (4 sizes)
• Hemp fibre (2 sizes)
• Hemp powder
• Flax fibre (2 sizes)
• Flax powder
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This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Aggregates CORN COB
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This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Aggregates OIL SEED RAPE
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This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Aggregates WHEAT
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This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Aggregates HEMP
02/08/2016 8
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Aggregates FLAX
02/08/2016 9
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Aggregates FIBRES
02/08/2016 10
Hemp Flax
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Aggregates POWDERS
02/08/2016 11
Hemp Flax
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
FESEM – RLS and TLS of hemp shiv
02/08/2016 12
Tangential longitudinal section
Radial longitudinal section
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
FESEM on lignin of hemp shiv
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This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Binders
• Two distinct functional requirements:
• Surface treatment to protect from degradation
• Binding of aggregates to ensure core cohesion
• Sol-gel process
• Add hydrophobicity
• Add fire resistance
• Retain sorption/desorption characteristics
• Binders
• Lime
• Clay
• Other binders (PLA, Lignin,…)
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This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Impact of nano-silica coating (FESEM)
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Uncoated hemp shiv Dip coated hemp shiv
Coated shiv shows agglomerated silica particles distributed on the surface. Edges of the pits are softened
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Impact of nano-silica coating
02/08/2016 16
Uncoated hemp shiv Dip coated hemp shiv
Coated shiv shows an even coating of nano silica on the surface , together with some agglomerated particles. Coating is cracked at the edges of the pits. Edges of the pits are in come cases filling in with nano-silica.
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Impact of nano-silica coating
02/08/2016 17
Uncoated hemp shiv Dip coated hemp shiv
Coated shiv shows an even coating of nano silica on the surface , together with some agglomerated particles. Coating is cracked at the edges of the pits. Pits are in some cases filled in with nano-silica, limiting access to the adjacent pore.
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Impact of nano-silica coating
02/08/2016 18
Uncoated hemp shiv
Coated shiv shows significant covering on the surface with pits often completely occluded by the nano-silica
Spray coated hemp shiv
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Impact of nano-silica coating
02/08/2016 19
Uncoated hemp shiv
Coated shiv shows significant covering on the surface with pits often completely occluded by the nano-silica. There is less evidence of cracking of the nano-silica coating than is seen in the dip coated material.
Spray coated hemp shiv
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Impact of nano-silica coating
02/08/2016 20
Uncoated hemp shiv
Coated shiv shows significant covering on the surface with pits often completely occluded by the nano-silica.There is less evidence of cracking of the nano-silica coating than is seen in the dip coated material. In some cases the pit is barely visible under the coating layer.
Spray coated hemp shiv
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Impact of nano-silica coating
02/08/2016 21
Dip coated hemp shiv
Nano-silica particles appear to be relatively uniform in size at ~30nm in diameter. Distribution appears to be relatively even but there is some agglomeration of particles. Further work is needed to ascertain the depth of the coating.
Spray coated hemp shiv
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835. 02/08/2016 22
Thickness of nano-silica coating layer
Dip coated hemp shiv Spray coated hemp shiv
The images of coating layers showed that both coating layers are multi-layers coating. The thickness of dip coating layer (around 200 nm) was thinner than spray coating layer (about 500 nm).
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Dual beam FIB: Impact of nano-silica coating (I)
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•The thickness of silica coating layer ranges from 120-160 nm
•The silica coating layer is built up by multiple layers of silica NPs
•The gold NPs penetrated into the silica coating layer
•The silica NPs deposited on the surface of hemp shiv
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835. 02/08/2016 24
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
DVS – Raw hemp shiv
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This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
DVS – Coated hemp shiv (same piece)
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This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835. 02/08/2016 27
STA-MHG (Treated hemp shiv _ cycle 1)
150 ml/minute 90min per step
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835. 02/08/2016 28
Comparison between untreated and treated hemp shiv C1
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Effect of Sol-gel coating on Water Desorption
• Immersed in distilled water for 24 hrs
• Weighed at frequent intervals to determine the rate of water loss at room temperature
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Coated shiv absorbs less water than uncoated shiv
Coated material losesmost of water earlierthan uncoated shiv
The rate of waterdesorption is faster for uncoated material
The number of coatings influence water absorption
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Composites
• Development of insulating core
• Development of protective external layer
• Durability tests
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This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Composites
02/08/2016 31
Oil seed rape straw bound with its own extract
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Composites
02/08/2016 32
Hemp shiv bound with maize extract
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Composites
02/08/2016 33
Fine flax straw bound with its own extract
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Composites
02/08/2016 34
Hemp shivbound with PLA (over heated)
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Composites
02/08/2016 35
Flaz powder bound with its own extract
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835.
Composites
02/08/2016 36
Hemp shiv/ hemp fibre bound with nano-silicausing sol-gel process
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N°636835. 02/08/2016
Thank you
