Senior Researcher, Dr.Sc.Ing.

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Presentation transcript:

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/T02-0721») kick-off meeting, Krakow, Poland, 11.04.2017

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

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

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 :http://www.lbas.lv/upload/stuff/201206/kokrupnieciba_2012_pet.pdf

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

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 143-154

Thank You for attention!