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Johansson, P., Brander, L., Jansson, A., Karlsson, S., Landel, P. & Svennberg, K. (2017). Kvalitet hos byggnadsmaterial i cirkulära flöden.
Open this publication in new window or tab >>Kvalitet hos byggnadsmaterial i cirkulära flöden
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2017 (Swedish)Report (Other academic)
Alternative title[en]
Quality of building materials in circular material flows
Abstract [sv]

Denna rapport är en del av ett projekt med det övergripande målet att bygg- och rivningsavfall i högre utsträckning skall återvinnas eller återanvändas. Detta utan att kvaliteten på materialet, och därmed framtida byggnader, försämras.

Syftet med projektet har varit att kartlägga och sammanställa de kunskaper och erfarenheter som finns kring de tekniska aspekterna vid cirkulära flöden av byggmaterial, med fokus på kvalitetsfrågor, att identifiera nya projekt som kan minska mängden bygg- och rivningsavfall som deponeras eller förbränns samt att skapa nya nätverk. Det finns spridd kunskap i byggbranschen om dessa frågor och dessutom finns en mängd forskningsresultat inom olika områden. I projektet har kunskaper och erfarenheter inom området samlats in genom litteraturstudier, workshops och seminarier, studiebesök och intervjuer.

I första delen av rapporten diskuteras generella tekniska erfarenheter och utmaningar i olika delar av byggkedjan, medan utmaningar för specifika materialgrupper diskuteras i den andra delen av rapporten. Dessa materialgrupper är polymera material, planglas, stenull, glasull, gipsskivor, krossad betong samt trä och träbaserade material. I rapporten redovisas en enkätundersökning som genomförts av Optimera hos deras proffskunder, i syfte att samla in dessas erfarenheter och synpunkter kring hållbart byggande.

Generellt kan vi konstatera att det finns stora utmaningar med att öka återvinningsgraden för rivnings- och ombyggnadsavfall. För installationsspill och byggavfall är de tekniska utmaningarna inte lika stora. Utmaningar och förutsättningar för ökad återvinning med bibehållen god kvalitet varierar mellan olika materialslag/produkter, typ av byggprojekt samt avsedd användning.

I rapporten föreslås ett antal konkreta förslag på områden där arbetet kan drivas vidare. Dessa inkluderar bland annat förbättrad/utökad inventering inför rivning och ombyggnad, rutiner och metoder för provtagning, korrekt sortering, hantering och lagring för att få rätt och jämn kvalitet, ge möjlighet för separering av sammansatta material, logistikfrågor, produktionstekniska lösningar samt kvalitetssäkring. Resultaten visar också på vikten av utbildning, nätverk och mötesplatser samt att forskningsprojekt genomförs tvärvetenskapligt. Det finns goda möjligheter för ökad återvinning genom samarbete genom hela byggkedjan.

Abstract [en]

The aim of the project presented in the report was that construction and demolition waste will be recycled or recycled to a greater extent and at the same time fulfil the quality requirements on the materials.

The purpose of the project has been to map and compile the knowledge and experience of the technical aspects of circular flows of building materials, focusing on quality issues, identifying new projects that can reduce the amount of construction and demolition waste deposited or burned, as well as creating new networks. There is widespread knowledge in the construction industry about these issues and there are also a wide range of research results in different areas. In the project, knowledge and experience have been gathered through literature studies, workshops and seminars, study visits and interviews.

The first part of the report discusses general technical experiences and challenges in different parts of the building chain, while challenges for specific material groups are discussed in the second part of the report. These material groups are polymeric materials, flat glass, stone wool, glass wool, plasterboard, crushed concrete, wood and wood-based materials. The report also presents a survey conducted by Optimera among their professional costumers, which aimed at collecting their experiences and views on sustainable construction.

In general, we can find that there are major challenges in increasing recycling rates for demolition and refurbishment waste. For installation and construction waste, the technical challenges are not as big. Challenges and conditions for increased recycling and reuse with retained good quality vary between different types of materials / products, type of construction project and intended use.

The report proposes a number of proposals in areas where work can be continued. These include improved / expanded inventory for demolition and refurbishment, routines and sampling methods, proper sorting, handling and storage to ensure the right quality, to provide the ability to separate compound materials, logistics, production technology and quality assurance. The results also show the importance of education, networks and meeting places and that research projects are conducted interdisciplinary. There are good opportunities for increased recycling through cooperation throughout the entire building chain.

Publisher
p. 58
Series
RISE Rapport ; 2017:55
Series
SBUF ; 13203
Keywords
building materials, reuse, recycling, polymeric materials, gypsum board, concrete, stone wool, glass wool, wood, wooden products
National Category
Civil Engineering
Identifiers
urn:nbn:se:ri:diva-33195 (URN)978-91-88695-22-2 (ISBN)
Projects
Möjligheter för ökade cirkulära flöden av byggmaterial, steg 1
Funder
Svenska Byggbranschens Utvecklingsfond (SBUF), 13203
Note

Funding : Svenska Byggbranschens Utvecklingsfond (SBUF) 13203

Available from: 2018-01-29 Created: 2018-01-29 Last updated: 2024-05-21Bibliographically approved
Sikander, E. & Svennberg, K. (2016). Byggande för ett framtida ändrat klimat - fokus fuktsäkerhet.
Open this publication in new window or tab >>Byggande för ett framtida ändrat klimat - fokus fuktsäkerhet
2016 (Swedish)Report (Other academic)
Alternative title[en]
Building for a future climate - focus on moisture safety
Abstract [en]

Building for a future climate - focus on moisture safety

Scenarios currently predicted for Sweden’s future climate entail increased risks of moisture damage in our buildings if we do not adapt them to such changes. It is especially important to consider the risks associated with the future climate in regard to new construction and renovations to avoid costly additions and alterations in the future.

This project presents some examples of adaptations available today; they provide an insight into the possible means of adapting properties currently available to the construction and property sector. There is also considerable potential for innovation and further development in the ways buildings can be adapted and the project highlights some areas where this will probably be necessary.

The adaptations addressed in this preliminary study have been grouped into the areas flooding, increased temperature, humidity and driving rain. The conclusion is that the construction sector has advanced to different extents within the three areas of adaptation addressed by this preliminary study, and that potential remains for further adaptations in each of these areas.

  • In the case of flooding, which is also the most prominent area and where events clearly show the need for adaptation, there is often an awareness of the problem, and there are examples of technical measures that can be taken. However, it is unclear whether these measures have been put into practice to a sufficient extent. Here too, there is likely to be a potential for further development of solutions to improve moisture safety in buildings.
  • As for temperature and humidity, we note that the construction sector already faces challenges in the construction of moisture safe buildings and the sector is working to solve problem areas such as cold attics, foundations ventilated by outdoor air and parts of buildings where moisture has been built, or leaked, in. Temperature increases lead to more favourable conditions for microbial growth to develop. Furthermore, if the building is cooled in part or throughout, relative humidity will increase in the cold structures, which will also encourage microbial growth. If buildings are to be proofed against humidity and temperature in the future, it is important that the construction sector has climate data for scenarios for which the moisture safety of buildings can be planned. This climate data is not currently available in the simulation software used on the market.
  • In the case of measures against driving rain, the industry already displays a need to increase its knowledge of calculations and design in to reduce the risk of water penetration. There is a need for a systematic approach to all parts of a building’s exterior. There is currently room for improvement in this area as there are examples of problems with water penetration in conjunction with torrential rain, and even more so when combined with strong winds. The examples are often due to leaks at connections, joints and penetrations through a building’s exterior.
Publisher
p. 56
Series
SP Rapport, ISSN 0284-5172 ; 2016:86
Keywords
climate change, moisture safety, structures, buildings, klimatändring, fuktsäkerhet, byggnader
National Category
Climate Research
Identifiers
urn:nbn:se:ri:diva-28285 (URN)978-91-88349-75-0 (ISBN)
Available from: 2017-02-27 Created: 2017-02-27 Last updated: 2023-05-23Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-9666-2196

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