Application of a non-stationary method in determination of the thermal properties of radiation shielding concrete with heavy and hydrous aggregate

Roman Jaskulski , Michał A. Glinicki , Wojciech Kubissa , Mariusz Dąbrowski

Abstract

Results of measurements of the specific heat and the thermal conductivity of concrete with blended special aggregate for neutron and gamma radiation shielding are presented. Experimental tests were performed on concrete with heavyweight aggregate (magnetite, barite), hydrogen-bearing aggregate (serpentine) and amphibolite aggregate. The thermal properties of concrete were determined using a nonstationary method. The highest specific heat was found for concrete with serpentine aggregate. Simple models for predicting the specific heat and the thermal conductivity on the basis of concrete mix design were evaluated to include the blends of heavyweight and hydrogen-bearing aggregates. The thermal conductivity of concrete was found to be linearly dependent on the concrete density in the range from 2200 to 3500 kg/m3. Its increase due to water saturation of concrete was not dependent on the open porosity of concrete. It was found that the specific heat can be fairly well predicted using the rule of mixtures formula. The thermal conductivity of concrete can be approximately predicted using a parallel model in the case of water-saturated concrete. The thermal conductivity prediction for dry concrete is also discussed.
Author Roman Jaskulski (FCEMP / ICEn)
Roman Jaskulski,,
- Insitute of Civil Engineering
, Michał A. Glinicki
Michał A. Glinicki,,
-
, Wojciech Kubissa (FCEMP / ICEn)
Wojciech Kubissa,,
- Insitute of Civil Engineering
, Mariusz Dąbrowski
Mariusz Dąbrowski,,
-
Journal seriesInternational Journal of Heat and Mass Transfer, ISSN 0017-9310, (A 40 pkt)
Issue year2019
Vol130
Pages882-892
Publication size in sheets0.5
Keywords in EnglishBlended aggregateConcrete mix designDensityNon-stationary methodOpen porosityThermal propertiesThermal conductivitySpecific heatRadiation shielding
ASJC Classification1507 Fluid Flow and Transfer Processes; 2210 Mechanical Engineering; 3104 Condensed Matter Physics
DOIDOI:10.1016/j.ijheatmasstransfer.2018.07.050
Languageen angielski
Score (nominal)40
ScoreMinisterial score = 40.0, 13-11-2018, ArticleFromJournal
Ministerial score (2013-2016) = 40.0, 13-11-2018, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2017 = 2.048; WoS Impact Factor: 2017 = 3.891 (2) - 2017=3.95 (5)
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