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Reduction of Radon Gas in Concrete Using Admixtures and Additives
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Concrete Structures. RISE CBI Betonginstitutet.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Concrete Structures. (Betongbyggnad)ORCID iD: 0000-0002-1526-9331
2018 (English)In: Nordic Concrete Research, ISSN 0800-6377, Nordic Concrete Research, ISSN 2545-2819, Vol. 58, article id ncr-2018-0002Article in journal (Refereed) Published
Abstract [en]

The second largest cause of lung cancer is related to radon (222Rn) and its progenies in our environment. Building materials, such as concrete, contribute to the production of radon gas through the natural decay of 238U from its constituents. The Swedish Cement and Concrete Research Institute (CBI) has examined three concrete recipes where only an additive as well as fly ash were added as single constituents to a reference recipe and compared to a reference concrete. The inputs of an additive as well as a supplementary cementitious material (fly ash) were made as a mean to investigate their potential influence on the radon exhalation rates of the concrete. Measurements were performed with an ATMOS 33 ionizing pulsation chamber for at least five different occasions for each recipe during a 22 month period. The results indicate a reduction of the exhalation rate by approximately 30-35 % for each altered recipe. This means roughly 1.5-2 mSv per year decrease in effective dose to a human using an additive or a supplementary cementitious material such as fly ash in relation to the investigated standard concrete.

Place, publisher, year, edition, pages
Oslo, 2018. Vol. 58, article id ncr-2018-0002
Keywords [en]
radon, effective dose, concrete, building materials, admixtures, additives, fly ash, health
National Category
Engineering and Technology
Research subject
Civil and Architectural Engineering
Identifiers
URN: urn:nbn:se:kth:diva-240430OAI: oai:DiVA.org:kth-240430DiVA, id: diva2:1272348
Note

QC 20190107

Available from: 2018-12-19 Created: 2018-12-19 Last updated: 2019-01-08Bibliographically approved

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Silfwerbrand, Johan

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CiteExportLink to record
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