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My speciality in research is the geotechnics of infraconstructions including superstructures, foundations and ground improvements. During Aalto era I have had research projects about for example the use of alternative materials, deep mixing methods together with the characteristization of material parameters and their reliability, stability of cuttings, permanent deformations of pavement layers. My own dissertation in year 2009 dealt with the permanent deformations (rutting) of low-volume roads. This research was based on the three fill-scale pavement tests in 200-2002. The research topics include also the automationof ground improvements (POHVA1). Since 2004 I have made also research on nuclear waste disposal in several projects funded by Posiva OY and KYT-programme.  One interesting area of research has been the life cycle analysis of infraconstructions from 2005. Besides these mainly Finnish projects I have been involved in two COST actions: (COST 347 Accelerated Pavement Testing and COST 354 Pavement Performance Indicator). Besides these I have taken part into to EU projects: ALTMAT (1999 - 2001) and ECRPD (2006 - 2008).