OSAMAT – Oil Shale Ash Use in Road Construction Arina Koroljova Eesti Energia AS Estonia OSAMAT ENV/EE/000227 Project is financed with the contribution.

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Presentation transcript:

OSAMAT – Oil Shale Ash Use in Road Construction Arina Koroljova Eesti Energia AS Estonia OSAMAT ENV/EE/ Project is financed with the contribution of the LIFE financial instrument of the European Community

OSAMAT Project Goals OSA is a valuable construction material OSA utilisation is safe for the environment OSAMAT ENV/EE/ Project is financed with the contribution of the LIFE financial instrument of the European Community

Oil Shale Ash OSAMAT ENV/EE/ Project is financed with the contribution of the LIFE financial instrument of the European Community Is a product of combustion of oil shale under t=1400 °C (pulverized firirng) and t= 900 °C (circulated fluidized bed combustion) Calcareous

Pilot construction (1) Narva-Mustajõe layer stabilisation –Pilot section length m –3 types of OSA used OSAMAT ENV/EE/ Project is financed with the contribution of the LIFE financial instrument of the European Community OSA type, recipeSection length, m Cyclone (Cycl 5% + KS 5%) 780 BF PF (deSOx) (EF PF 6 % + KS 3 % 650 EF CFB 9%200

Pilot construction (2) Simuna-Vaiatu mass-stabilisation –Section length – 500 m, depth – 4 m, stabilised peat volume – m 3 OSAMAT ENV/EE/ Project is financed with the contribution of the LIFE financial instrument of the European Community

Narva-Mustajõe design criteria and observation results Load bearing capacity – 260 MPa OSAMAT ENV/EE/ Project is financed with the contribution of the LIFE financial instrument of the European Community

Compressive strength development Narva-Mustajõe design criteria and observation results OSAMAT ENV/EE/ Project is financed with the contribution of the LIFE financial instrument of the European Community

Pavement condition analysis –Cracks emergence in the sections 2011, no cracks in the section 2012 Leachibility Narva-Mustajõe design criteria and observation results OSAMAT ENV/EE/ Project is financed with the contribution of the LIFE financial instrument of the European Community

Simuna-Vaiatu design criteria and observation results Settlement observation (0.857 cm in average) OSAMAT ENV/EE/ Project is financed with the contribution of the LIFE financial instrument of the European Community

Simuna-Vaiatu design criteria and observation results Vane shear strength – 50 kPa OSAMAT ENV/EE/ Project is financed with the contribution of the LIFE financial instrument of the European Community

Outcomes so far... High load bearing capacity High strength development Lower ash content in the mixture No environmental impact Mass-stabilised body settlement takes half a year Further technical and environmental monitoring is required OSAMAT ENV/EE/ Project is financed with the contribution of the LIFE financial instrument of the European Community

Thank you! Arina Koroljova Project Manager Ash Sales Department Eesti Energia AS Skype arina.koroljova OSAMAT ENV/EE/ Project is financed with the contribution of the LIFE financial instrument of the European Community