Influence of selected micro additives content on thermal properties of gypsum

Karol Prałat , Roman Jaskulski , Justyna Ciemnicka , Wojciech Kubissa

Abstract

The presented work focuses on the influence of the micromaterials (microspheres, aerogel and polymer hydroxyethyl methyl cellulose) on thermal properties of gypsum. The polymer and the aerogel are used as additives in the weight fraction, up to 1% of pure gypsum and the microspheres in the weight fraction, up to 10% of gypsum. The water-to-gypsum ratio was at the level of 0.75. Non-stationary method and Isomet 2114 experimental setup were applied for the purpose of measurements of thermal parameters. The coefficient of thermal conductivity λ, the specific heat Cp and the thermal diffusivity a were determined. The gypsum with polymer content resulted in more than 15% lower thermal conductivity in comparison to the specimen without HEMC as a result of the different density and total porosity of the material. The gypsum with aerogel and microspheres content resulted in more than 8% and 7% respectively lower values in comparison to the pure gypsum without micro additives. Decrease in thermal conductivity, thermal diffusivity and density with added micro product were observed as a result of structure modifications of the gypsum product.
Author Karol Prałat (FCEMP / ICEn)
Karol Prałat,,
- Insitute of Civil Engineering
, Roman Jaskulski (FCEMP / ICEn)
Roman Jaskulski,,
- Insitute of Civil Engineering
, Justyna Ciemnicka (FCEMP)
Justyna Ciemnicka,,
- Faculty of Civil Engineering, Mechanics and Petrochemistry
, Wojciech Kubissa (FCEMP / ICEn)
Wojciech Kubissa,,
- Insitute of Civil Engineering
Journal seriesArchitecture Civil Engineering Environment, ISSN 1899-0142, (N/A 20 pkt)
Issue year2019
No3/2019
Pages69-79
Publication size in sheets0.5
Keywords in EnglishAerogel; hydroxyethyl methyl cellulose; Micromaterials; Microspheres; Thermal properties.
DOIDOI:10.21307/ACEE-2019-037
Languageen angielski
Score (nominal)20
Score sourcejournalList
ScoreMinisterial score = 20.0, 16-12-2019, ArticleFromJournal
Publication indicators WoS Citations = 0
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