TUTKIMUKSET
Taustalla jatkuva tutkimustyö
Olennainen osa toimintaamme on tutkimustyö ja siihen panostaminen. Materiaalitutkimuksilla olemme selvittäneet kuitusaven ja lentotuhkan kemiallisia, fysikaalisia ja geoteknisiä ominaisuuksia. Rakennetutkimuksemme painottuvat materiaalien toimivuuteen erilaisissa rakenteissa, materiaalien työstämismenetelmiin sekä rakenteiden pitkäaikaisseurantaan.
Esimerkkejä tutkimuksistamme:
• Tuotantolaitoskohtaiset tutkimukset 1980-luvulta alkaen
• Kuitusaven tuotteistaminen, 1997 - 1998 (alkusanat)
• Life -Koivissilta, 1997 - 1998 ( tiivistelmä) , abstract (in english)
• Kuitusavi maarakentamisessa 1999 - 2001
• Ville Niutasen Pro Gradu -tutkielma: "Teollisuusekologinen näkökulma sivutuotteiden hyötykäyttöön", Jyväskylä Yliopisto, 2000
• Finncao -kuitusavet pintarakenteiden tiivistekerroksissa, suunnittelu- ja mitoitusohje (PDF-tiedosto, 648 kt)
• Metsäteollisuuden lentotuhkien käyttö tie-, katu ja kenttärakenteissa, suunnittelu- ja mitoitusohje (PDF-tiedosto, 513 kt)
• Teollisuus- ja energialaitosten sivutuotteiden hyötykäyttö liikuntapaikkarakentamisessa (loppuraportti PDF-tiedosto, 517kt)
• Liikuntapaikkarakentaminen metsäteollisuuden sivutuotteilla
• Kuntatekniikka 5/2007 (lue juttu)
Life Koivisilta (in english)
Abstract
Based on the sustainable development Finnish and EU waste and landfill regulations direct us to reduce waste and to utilise waste materials when ever possible. Landfill regulations determine also the characteristics of landfill structures. The new landfill directives lead us to the situation, where it is economically and financially difficult to modernize all landfills to comply the directives. Several of them must be closed and after-treated.
When a landfill is closed, a protective cover structure is to be built and monitoring organised. The cover structure include gas collecting/venting layer, possible artificial isolation, impermeable barrier layer, drainage layer and vegetation/other top layer.
In the western Uusimaa there are about 40 ha of landfill area to be closed, in13 municipal landfills and ten industrial landfills. In the meantime, the industry and energy production in the region produce waste materials that would be suitable for utilization; only the locations should be found.
The aim of this project was to generate a new regional method for economical and environmentally sound landfill closing. The method can be applied locally or regionally both in Finland and EU area as well as elsewhere in the world. The method will
• increase the cost efficiency of landfill closing
• guarantee the quality of surveys and plans of landfill closing
• decrease the amount of natural materials used
• promote the reuse of industrial by-products and prevent their uncontrolled dumping
• enhance the closing and landscaping constructions
• create jobs
• increase co-operation between the industry, municipalities and authorities
The method include instructions for the material studies and preliminary landfill surveys as well as for the structure planning and construction. The environmental impact assessment and monitoring is also vital.
As a pilot case the closing and after-treatment procedure is carried out in Koivissilta landfill, Vihti. The building materials used were the fibre sludge of Metsä-Serla Ltd. Kirkniemi mills and the fly and bottom ashes of Helsingin Energia.
The technical and environmental characteristics of the waste materials and structures were studied both in laboratory and field conditions.
In association with the method development project a product creation project was undertaken and FINNCAO material and service created. The service include planning, materials and construction.
The results of the project are promising. The experience shows that the landfill structures can be built almost solely by using waste materials. The building expenses can be reduced remarkably because of the savings in the material costs. The same savings can be seen in industrial waste management costs.
takaisin
