1. Senior Researcher, Dr.Sc.Ing.
Information about the project works – possibilities of waste materials/ country resources possible to use for the production of geopolymers
Jānis Šliseris
Senior Researcher, Dr.Sc.Ing.
Project («ELAC2015/T ») kick-off meeting, Krakow, Poland,

2. Outline Main natural resources in Latvia
Possible materials for reinforcement
Physical properties of selected fibers

3. Main natural resources in Latvia
Around 334 m3 timber available for each citizen.

4. Possible materials for reinforcement
Candidates for natural fiber reinforcement of waste:
Wood fibers (Pine 49%, spruce 22%, Birch 24%)
Cereal fibers (rye, oats, barley, wheat, buckwheat)
Rapeseed fibers
Main wood products:
Lumber (around 60%*)- a lot of saw-dust waste produced!
Plywood (around 20%*)
Glulam beams
CLT plates
*data from :

5. Physical properties of selected fibers
Wood (spruce) fiber
Janis Sliseris, Heiko Andrä, Matthias Kabel, Brigitte Dix, Burkhard Plinke, Oliver Wirjadi, Girts Frolovs, Numerical prediction of the stiffness and strength of medium density fiberboards, Mechanics of Materials, Volume 79, December 2014, Pages 73-84

6. Physical properties of selected fibers
Flax fiber
Material
Parameter
Value
Flax fiber
Constitutive law
Linear elastic, isotropic
Young’s modulus
54 GPa [8]
Poisson’s ratio
0.2
Defects of flax fibers
Brittle material law E
54 GPa ET
-2000 MPa**
𝜎 𝑦
50 MPa**
𝐿 𝑐
1.0
Interface zones in fiber bundles
1.627 GPa
0.35
-300 MPa**
2 MPa
Janis Sliseris, Libo Yan, Bohumil Kasal, Numerical modelling of flax short fibre reinforced and flax fibre fabric reinforced polymer composites, Composites Part B: Engineering, Volume 89, 15 March 2016, Pages

7. Thank You for attention!