Zobrazeno 1 - 10
of 96
pro vyhledávání: '"Lahdensivu Jukka"'
Autor:
Hasholt Marianne Tange, Frid Katja, Spörel Frank, Lahdensivu Jukka, Helsing Elisabeth, Müller Matthias, Faheem Abdul, Sleiman Sara Al Haj, Jacobsen Stefan
Publikováno v:
Nordic Concrete Research, Vol 66, Iss 1, Pp 113-133 (2022)
A one-day Nordic Concrete Research workshop on “Accelerated freeze-thaw testing of concrete” attracted approx. 30 participants. The workshop included presentations on various aspects, such as observed frost damage in the field and the importance
Externí odkaz:
https://doaj.org/article/55c89c2cfd334b95918b579b6dca0b89
Autor:
Lahdensivu Alina, Lahdensivu Jukka
Publikováno v:
Nordic Concrete Research, Vol 65, Iss 2, Pp 129-148 (2021)
This study discusses visible corrosion damage due to carbonation in concrete balconies and facades. The focus of the study was to find out how the age of the structure, cover depth of concrete, carbonation coefficient, capillarity of concrete and the
Externí odkaz:
https://doaj.org/article/98c9421e74f9478383634592ab3eba24
Autor:
Lahdensivu Elina, Lahdensivu Jukka
Publikováno v:
Nordic Concrete Research, Vol 64, Iss 1, Pp 129-144 (2021)
Construction business along with other businesses have set carbon neutrality goals in the following years. To reach these goals a lot needs to be done fairly quickly. The high impact of concrete production on carbon emissions has been known for years
Externí odkaz:
https://doaj.org/article/e5fadaa232054dffb73b300d72134f3c
Publikováno v:
Nordic Concrete Research, Vol 64, Iss 1, Pp 93-107 (2021)
Service life of nine wind power unit pedestals, which concrete grades between C45 and C55, were studied with four different service life models. The exact service life could be calculated only with two of them with the initial data.
Externí odkaz:
https://doaj.org/article/fda2e47a06594ceeb6892f84b10d0782
Publikováno v:
Nordic Concrete Research, Vol 61, Iss 2, Pp 91-106 (2019)
It has been shown in previous studies that the existing precast concrete element building stock in Finland has quality issues, especially with freeze-thaw durability and reinforcement corrosion. In addition, it has been presented that deterioration r
Externí odkaz:
https://doaj.org/article/ffbecd1968674b95b848bad82ff91d59
Publikováno v:
Nordic Concrete Research, Vol 60, Iss 1, Pp 1-12 (2019)
In the most service life models of reinforced concrete structures the initiation phase is the most crucial, because according to models, service life of the structure will end underestimation on conservative side when carbonation achieves the reinfor
Externí odkaz:
https://doaj.org/article/b49b34dc36b34163950bc64d3c648678
Publikováno v:
Nordic Concrete Research, Vol 59, Iss 1, Pp 31-44 (2018)
Even though natural phenomena do not abide to borders, Finland has traditionally been considered an alkali-silica reaction (ASR) free country. This is due to exceptional quality of the mostly course crystalline igneous rocks. However, during the last
Externí odkaz:
https://doaj.org/article/659fd3690c834269b0981945f77148c6
Autor:
Annila Petri J., Lahdensivu Jukka
Publikováno v:
E3S Web of Conferences, Vol 172, p 23004 (2020)
Moisture and mould damage are common in Finnish public buildings. Due to the possible health hazards of such damage, more efficient detection methods and protocols are needed to examine it. The aim of this study is to examine the reliability of visua
Externí odkaz:
https://doaj.org/article/3b54993913b44f85ab6dd1721e283a10
Publikováno v:
E3S Web of Conferences, Vol 172, p 23002 (2020)
Consideration of the big picture is needed when evaluating aspects of the building with relevance for reporting of poor indoor air quality or symptoms. Even the most accurate longitudinal measurements do not remove the need for expertise and broad un
Externí odkaz:
https://doaj.org/article/7e70c462c23f4275bf683c429455eb56
Publikováno v:
E3S Web of Conferences, Vol 172, p 20007 (2020)
In 2015, the Ministry of the Environment in Finland renewed the legislation and the National Building Code of Finland. It released completely new legislation concerning repair design. This was due to widely known issues relating to the indoor air qua
Externí odkaz:
https://doaj.org/article/f4f0040300c941f982ed09fc4ec95b26