Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Utveckling och utvärdering av metoder för utbyte av PCB-haltiga fogmassor.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
1999 (Swedish)Report (Refereed)
Abstract [sv]

Development of Cleanup Methods for PCB Containing Elastic Sealant Used in Outdoor Joints between Concrete Blocks in Buildings. The goals of the project were to develop cleanup methods for PCB containing elastic sealants used in outdoor joints between concrete blocks and to minimise the PCB spread to the outdoor environment, to the indoor air and also to keep the PCB levels as low as reasonably possible in the workplace environment during the work with taking away the sealant. Analyses of PCB are done within the project. The cleanup process consisted of different steps, (1) cutting the elastic sealant with an oscillating knife, (2) grinding of the concrete with a mechanical machine, (3) sawing the concrete with a machine (4) cutting the concrete with a machine chisel. At all these different steps a high capacity vacuum cleaner which was connected to the machines was used. The following PCB analyses were done (1) concentration in the elastic sealant, (2) concentration in the concrete close to the sealant, (3) concentration in soil, (4) concentration in the indoor air, (5) concentration in the air in the workplace environment. The elastic sealant contained 6 % total PCB of a technical product with a composition most similar to Clophen A40. The concrete close to the sealant (first 1-2 mm) contained 0,11 % and 1,7 % total PCB at two different places. The pattern of the PCBs resembled that of the sealant. PCB concentrations, å7PCB, in the soil increased during the work with the sealants with 0,08 mg/kg dry soil 1 meter from the building and with less than 0,03 mg/kg dry soil 10 meters from the building. The source of the PCB in the soil is most likely the sealant as the pattern of the PCB-congenes is similar. The PCB levels in the workplace air in the beginning of the project when the equipment used were not fully developed were generally above the occupational exposure limit 10 mg/m3 (up to 120 mg/m3). Later when the equipment were optimised to better take care of dust and gases produced during the cutting and grinding etc, levels were below or close to 10 mg/m3. The pattern of the PCBs in the workplace air was different from that of the sealant containing more of the lighter components. The PCB concentration in the indoor air were measured before and under the work with cleaning-up the sealants. The levels were around 600 ng/m3 and there was no significant increase during the work with taking away the sealant. The PCB level indoor, after the work with cleaning-up the sealants, does not show any decrease two months after the end of the work. The pattern of the PCBs in the indoor air were different from that of the sealant as well as that of the work place air, more of the lighter PCB were present indoors compared to the composition in both workplace air and in sealant.

Place, publisher, year, edition, pages
1999. , 63 p.
Series
SP Rapport, ISSN 0284-5172 ; 1999:07
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-4468Local ID: 495ISBN: 91-7848-763-3 (print)OAI: oai:DiVA.org:ri-4468DiVA: diva2:962106
Available from: 2016-09-07 Created: 2016-09-07 Last updated: 2017-06-19Bibliographically approved

Open Access in DiVA

fulltext(17349 kB)3 downloads
File information
File name FULLTEXT01.pdfFile size 17349 kBChecksum SHA-512
4b46347f7f6f2310d487b4a0dcdc758ab08df94d629f17418b8eacc3efba1065b7c1fb2ce46add3be1198b2eab4d6f98bad1e48a25786ba17446207176925fef
Type fulltextMimetype application/pdf

By organisation
SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi )
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 3 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 8 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
v. 2.28.0