Endre søk
Link to record
Permanent link

Direct link
BETA
Publikasjoner (10 av 100) Visa alla publikasjoner
Mjörnell, K. & Olsson, L. (2019). Moisture Safety of Wooden Buildings – Design, Construction and Operation. Journal of sustainable architecture and civil engineering, 24(1)
Åpne denne publikasjonen i ny fane eller vindu >>Moisture Safety of Wooden Buildings – Design, Construction and Operation
2019 (engelsk)Inngår i: Journal of sustainable architecture and civil engineering, ISSN 2029–9990, Vol. 24, nr 1Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

During the last decade, building in wood has increased, mainly due to environmental awareness andtargets to decrease the carbon footprint originated from the production of building materials. Newtechnologies such as CLT (cross laminated timber) have accelerated the construction of multi-storywooden buildings. The CLT structure has been used both for housing and offices. Due to the extensivesize of the buildings and relatively fast assembly of the buildings, weather protection has not alwaysbeen used. It is commonly known that building materials sensitive to moisture need to be protectedagainst high moisture conditions and water during construction. If this is not done, there is an increasedrisk of microbial growth which can result in health problems for future users of the building, extensivecosts for the remediation and exchange of materials, but also lack of trust in the construction industry.There are disagreements between the building industry and researchers how sensitive wooden buildingsare to exposure to high moisture levels and water during storage at sites and construction. Based onresults from several research projects studying moisture conditions both in the laboratory and in thefield, recommendations for procurement, storage and handling of wood during construction to assuremoisture safety are suggested in this pa

Emneord
CLT, guidance, massive wooden buildings, moisture safety, mould growth.
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-38585 (URN)
Tilgjengelig fra: 2019-05-08 Laget: 2019-05-08 Sist oppdatert: 2019-05-08bibliografisk kontrollert
Mjörnell, K. & Olsson, L. (2019). Moisture safety of wooden buildings – design, construction and operation. Journal of Sustainable Architecture and Civil Engineering, 24(1), 29-35
Åpne denne publikasjonen i ny fane eller vindu >>Moisture safety of wooden buildings – design, construction and operation
2019 (engelsk)Inngår i: Journal of Sustainable Architecture and Civil Engineering, ISSN 2029-9990, Vol. 24, nr 1, s. 29-35Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

During the last decade, building in wood has increased, mainly due to environmental awareness and targets to decrease the carbon footprint originated from the production of building materials. New technologies such as CLT (cross laminated timber) have accelerated the construction of multi-story wooden buildings. The CLT structure has been used both for housing and offices. Due to the extensive size of the buildings and relatively fast assembly of the buildings, weather protection has not always been used. It is commonly known that building materials sensitive to moisture need to be protected against high moisture conditions and water during construction. If this is not done, there is an increased risk of microbial growth which can result in health problems for future users of the building, extensive costs for the remediation and exchange of materials, but also lack of trust in the construction industry. There are disagreements between the building industry and researchers how sensitive wooden buildings are to exposure to high moisture levels and water during storage at sites and construction. Based on results from several research projects studying moisture conditions both in the laboratory and in the field, recommendations for procurement, storage and handling of wood during construction to assure moisture safety are suggested in this paper.

sted, utgiver, år, opplag, sider
Kauno Technologijos Universitetas, 2019
Emneord
CLT, Guidance, Massive wooden buildings, Moisture safety, Mould growth
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-39928 (URN)10.5755/j01.sace.24.1.22341 (DOI)2-s2.0-85071775890 (Scopus ID)
Tilgjengelig fra: 2019-09-19 Laget: 2019-09-19 Sist oppdatert: 2019-09-19bibliografisk kontrollert
Mangold, M., Mjörnell, K., Durgun, Ö. & Johansson, T. (2018). Fastighetsägares förutsättningar för renovering av sina byggnadsbestånd från miljonprogramstiden. Bygg&Teknik, 2
Åpne denne publikasjonen i ny fane eller vindu >>Fastighetsägares förutsättningar för renovering av sina byggnadsbestånd från miljonprogramstiden
2018 (svensk)Inngår i: Bygg&Teknik, ISSN 0281-658X, Vol. 2Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm)) Published
Abstract [sv]

Byggsektorn står inför ett stort renoveringsbehov. Byggnader från miljonprogramstiden har nått en ålder då många olika byggnadsdelar når sin förväntade livslängd. Detta renoveringsbehov är inte jämnt fördelat bland Sveriges fastighetsägare. Det stora flertalet av de ännu ej renoverade byggnaderna från miljonprogramstiden ägs av fastighetsbolag knutna till SABO, men det finns även många privata fastighetsägare och bostadsrättsföreningar som har ett eftersläpande renoveringsbehov eller som har renoverat men fortfarande har en hög energianvändning och alltså troligtvis inte genomfört nödvändiga energieffektiviseringsåtgärder. Det finns också olika förutsättningar för att göra de investeringar som krävs, vilket beror på företagens soliditet, fastigheternas värde och möjligheten att få lån, utrymme för hyresökning etc. Detta gör att renoveringstakten inte kommer att täcka renoveringsbehovet och att vissa delar av fastighetsbeståndet kommer att vara mer eftersatt.

Emneord
Fastighetsägare, renovering, energianvändning, hyresökning, social hållbarhet
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-36095 (URN)
Prosjekter
Nationell Byggnadsspecifik Information
Forskningsfinansiär
Swedish Research Council Formas
Tilgjengelig fra: 2018-11-09 Laget: 2018-11-09 Sist oppdatert: 2019-06-27bibliografisk kontrollert
Höjer, M. & Mjörnell, K. (2018). Measures and Steps for More Efficient Use of Buildings. Sustainability, 10(6), Article ID 1949.
Åpne denne publikasjonen i ny fane eller vindu >>Measures and Steps for More Efficient Use of Buildings
2018 (engelsk)Inngår i: Sustainability, ISSN 20711050, Vol. 10, nr 6, artikkel-id 1949Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

As urbanization continues and more people move into cities and urban areas, pressure on availablelandfornewconstructionswillcontinuetoincrease. Thissituationconstitutesanincentiveto reviewtheneedforinteriorspaceandusesofexistingbuildings. Agreatdealcanbegainedfromusing existingbuildingsmoreefficientlyinsteadofconstructingnewones: Reducedresourceusageduring construction(investments,naturalresources,andenergy),operation,andmaintenance;moreactivityper squaremeterofbuildingscreatesagreaterbasisforpublictransportandotherservices;moreintensive useofbuildingscreatesamorevibrantcitywithoutbuildingonvirginland. Theaimofthispaperisto initiateadiscussionregardinghowdigitalizationcanaffectthedemandandsupplyofinteriorspace in existing buildings and elaborate on how policy can support more resource-efficient uses of space. New activity-based resource measurements intended for use in buildings are proposed, and several principles that have the potential to decrease environmental impact through more efficient usage of space are outlined. Based on these ideas for encouraging the flexible use of building spaces that are facilitatedbydigitalizationandthenewmeasurementapproaches,afour-stepprincipleforconstruction isproposed: Thefirststepistoreducethedemandforspace,thesecondistointensifyusageofexisting space, the third is to reconstruct and adapt existing buildings to current needs, and the fourth is to constructnewbuildings. Urgingpolitical,municipal,construction,andreal-estatedecisionmakersto contemplatethisprinciple,particularlyinviewofthenewconditionsthatdigitalizationentails,willlead tomoresustainableconstructionand,inthelongterm,asustainablebuiltenvironment.

Emneord
resource use; energy use; interior space utilization; buildings; sharing; digitalizatio
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-33929 (URN)10.3390/su10061949 (DOI)2-s2.0-85048257456 (Scopus ID)
Tilgjengelig fra: 2018-06-11 Laget: 2018-06-11 Sist oppdatert: 2019-01-09
Femenías, P., Mjörnell, K. & Thuvander, L. (2018). Rethinking deep renovation: The perspective of rental housing in Sweden. Journal of Cleaner Production, 195, 1457-1467
Åpne denne publikasjonen i ny fane eller vindu >>Rethinking deep renovation: The perspective of rental housing in Sweden
2018 (engelsk)Inngår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 195, s. 1457-1467Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This study examines renovation strategies among owners of rental housing in Sweden in response to European energy policies that promote deep renovation as a means to reduce carbon emissions from residential buildings. Case studies of eleven housing companies, seven public and three private, were designed with the aim to examine housing owners’ attitudes and renovation strategies, and how policies and objectives for energy efficiency become incorporated into these attitudes and strategies. Results are illustrated in typologies that distinguish between renovation strategies with either a more commercial or a more societal focus and spanning between deep and partial renovation. The typologies can be used to discuss how different aspects influence renovation, and illustrates how strategies change over time. The study identifies a trend in which housing owners are increasingly relying on partial or over-time renovation. Cost is one important driver, but social responsibility toward tenants and in some cases the protection of cultural heritage are also found to be important. A distrust of fixed models for renovation was observed. The paper questions the concept of deep renovation and suggests instead partial and over-time renovation as a way forward toward sustainable renovation. Partial renovation can bring together energy efficiency with environmental, financial, social, and cultural objectives of housing management. If managed properly, over-time renovation can reduce the risk of an investment, and has the advantage of allowing future technological advancements in energy efficiency to be included in current planning.

Emneord
Sustainable renovation; Renovation process; Strategies; Energy efficiency; Housing owners; Multi-residential housing; Typologies
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-33227 (URN)10.1016/j.jclepro.2017.12.282 (DOI)2-s2.0-85040353123 (Scopus ID)
Forskningsfinansiär
Swedish Research Council Formas
Tilgjengelig fra: 2018-02-09 Laget: 2018-02-09 Sist oppdatert: 2018-12-20bibliografisk kontrollert
Ranhagen, U., Bogren, M., Mjörnell, K., Sandberg, J., Persson, A., Schylberg, K., . . . Lindh, H. (2017). Attraktiva livsmiljöer och flöden: åtta teman för planering av framtidens goda stad. Stockholm: Kungliga Vetenskapsakademien IVA
Åpne denne publikasjonen i ny fane eller vindu >>Attraktiva livsmiljöer och flöden: åtta teman för planering av framtidens goda stad
Vise andre…
2017 (svensk)Rapport (Annet (populærvitenskap, debatt, mm))
sted, utgiver, år, opplag, sider
Stockholm: Kungliga Vetenskapsakademien IVA, 2017. s. 72
Serie
IVA-M, ISSN 1102-8254 ; IVA-M486
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-32883 (URN)978-91-7082-960-4 (ISBN)
Merknad

IVA-projektet Framtidens goda stad

Tilgjengelig fra: 2017-12-19 Laget: 2017-12-19 Sist oppdatert: 2019-02-04bibliografisk kontrollert
Mjörnell, K. (2017). En stark forskningsmiljö om hållbar integrerad renovering, SIRen. Husbyggaren (5), 20-21
Åpne denne publikasjonen i ny fane eller vindu >>En stark forskningsmiljö om hållbar integrerad renovering, SIRen
2017 (svensk)Inngår i: Husbyggaren, nr 5, s. 2s. 20-21Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm)) Published
sted, utgiver, år, opplag, sider
Svenska Byggingenjörernas Riksförbund, 2017. s. 2
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-32874 (URN)
Tilgjengelig fra: 2017-12-15 Laget: 2017-12-15 Sist oppdatert: 2018-08-22bibliografisk kontrollert
Johansson, P., Mjörnell, K. & Arfvidsson, J. (2017). Examples of characteristics of wood that affect mould growth: a meta-analysis. European Journal of Wood and Wood Products, 75(4), 603-613
Åpne denne publikasjonen i ny fane eller vindu >>Examples of characteristics of wood that affect mould growth: a meta-analysis
2017 (engelsk)Inngår i: European Journal of Wood and Wood Products, ISSN 0018-3768, E-ISSN 1436-736X, Vol. 75, nr 4, s. 603-613Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Building materials differ in their susceptibility to mould growth. Wood is a material often considered to have a low mould resistance. However, wood is not a homogenous material and different characteristics of the material are expected to have an impact on mould growth. In this paper, it was shown that wood species (pine or spruce), sawing pattern (centre-board or side-board) and surface structure (planed or sawn) affected mould growth. In addition, it was indicated that the susceptibility cannot be described by one single parameter, but also depends on other parameters. It is therefore difficult to estimate the susceptibility of wood in general. These conclusions were drawn from a meta-analysis, using data from five separate, previously performed laboratory studies conducted at 90% relative humidity and 22 °C, and from a laboratory study performed at 95% RH and 22 °C. © 2016 Springer-Verlag Berlin Heidelberg

Emneord
Molds, Laboratory studies, Meta analysis, Mould growth, Mould resistances, Sawing patterns, Single parameter, Wood
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-27587 (URN)10.1007/s00107-016-1127-x (DOI)2-s2.0-84995395731 (Scopus ID)
Tilgjengelig fra: 2016-12-19 Laget: 2016-12-19 Sist oppdatert: 2018-08-22bibliografisk kontrollert
Höjer, M., Mjörnell, K., Andersson, O., Kallstenius, Å., Lennebo, R., Minoz, Å. & Renander, L. (2017). Här är fyra smarta alternativ till att bygga nytt. Dagens samhälle, Article ID 29 maj.
Åpne denne publikasjonen i ny fane eller vindu >>Här är fyra smarta alternativ till att bygga nytt
Vise andre…
2017 (svensk)Inngår i: Dagens samhälle, artikkel-id 29 majArtikkel i tidsskrift, News item (Annet (populærvitenskap, debatt, mm)) Published
Abstract [sv]

Vi behöver 710 000 nya bostäder inom en tioårsperiod, men även behovet av andra fastigheter ökar när befolkningen växer. Det är hög tid att lyfta alternativ till att bygga nytt. Här presenteras en fyrstegsprincip för mer effektivt användande av ytor, skriver forskare, fastighetsägare och arkitekter med flera tillsammans.

https://www.dagenssamhalle.se/debatt/har-ar-fyra-smarta-alternativ-till-att-bygga-nytt-17320

sted, utgiver, år, opplag, sider
Stockholm: Dagens Samhälle AB, 2017
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-32884 (URN)
Tilgjengelig fra: 2017-12-19 Laget: 2017-12-19 Sist oppdatert: 2019-02-04bibliografisk kontrollert
Mangold, M., Mjörnell, K. & Johansson, T. (2017). Nya digitala verktyg ger bättre bild av renoveringsbehovet. Bygg & Teknik (5)
Åpne denne publikasjonen i ny fane eller vindu >>Nya digitala verktyg ger bättre bild av renoveringsbehovet
2017 (svensk)Inngår i: Bygg & Teknik, nr 5, s. 4Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm)) Published
Abstract [sv]

Byggsektorn är inne i en period av mycket hög aktivitet. Över 700 000 nya bostäder efterfrågas, samtidigt som miljonprogrammets byggnader börjar nå sin förväntade livslängd. Detta är en enorm utmaning, men det är också en möjlighet, där vi kan nå energi- och klimatmål och skapagoda boendemiljöer till rimlig kostnad.

sted, utgiver, år, opplag, sider
Stockholm: Byggteknikförlaget, 2017. s. 4
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-32882 (URN)
Tilgjengelig fra: 2017-12-19 Laget: 2017-12-19 Sist oppdatert: 2019-06-27bibliografisk kontrollert
Identifikatorer
ORCID-id: ORCID iD iconorcid.org/0000-0002-3863-0740
v. 2.35.7