As of August, all road test-sections construction projects are completed and building permits issued. Press release 09.08.2012
On 20 July 2012, the Estonian Road Administration issued road construction permit No. 11 to Estonian Energy for state road No. 12109 Narva-Mustajõe section km 14.0-16.1. The completion date is set out for 31. December 2012.
Operations Construction works are carried out by Nordecon AS in accordance with road construction project compiled by Ramboll Estonia AS.
On this road section will be built two sections with different construction will be built:
1. Test-section where the oil shale ash is used to stabilize an existing foundation (different ash-stabilized layer thicknesses and different ashes);
2. Test-section using traditional methods where complex-stabilized foundation will be built.
On 1 August 2012, the Estonian Road Administration issued road construction permit No. 14 to Estonian Energy for state road No. 17192 Simuna-Vaiatu section km 3.0-4.0. The completion date is set out for 31. December 2013.
Construction works Operations are carried out in several phases by Nordecon AS in accordance with road construction project compiled by Ramboll Estonia AS.
On this road section will be built the following constructions test-sections with the following constructions will be built:
1. Test-section where the oil shale ash is used to stabilize an existing foundation;
2. Test-section where sub-soil (peat) mass-stabilization will be carried out;
3. Test-section using traditional methods where a complex-stabilized or crushed stone foundation will be built.
On Simuna-Vaiatu section mass-stabilization works will use a binder mixture where one component is oil shale ash from Estonian Energy power plant filter block 8 or cyclone ash, and other component is composite cement.
Laboratory tests were conducted in the Ramboll Finland Luopioinen laboratory, in order to develop the most appropriate recipe for tested materials.