Influence of Tylose MH1000 content on gypsum thermal conductivity

Dariusz Heim , Andrzej Mrowiec , Karol Prałat , Maria Mucha

Abstract

The presented work focuses on the influence of a water-soluble derivative of cellulose, hydroxyethyl methyl cellulose (HEMC), on gypsum thermal properties. The polymer is used as an additive in the weight fraction, up to 1% of pure gypsum. The water-to-gypsum ratio was taken at a level of 0.74. The study of hemihydrate calcium sulphate hydration of ββ crystalline form was observed using own-made apparatus measuring the temperature of the system during hydration. The presence of the polymer leads to a retardation of the hydration and setting process of gypsum paste. For the purpose of conductivity measurements, an improved method with a “hot wire” setup was used. A decrease of thermal conductivity and density with added HEMC was observed because of structure modifications of the gypsum product. It was concluded that adding HEMC influences not only the water retention coefficient and the rate of setting of gypsum, it also changes the morphological structure of gypsum-polymer composite, which is reflected in the density and thermal conductivity of the final product.
Author Dariusz Heim
Dariusz Heim,,
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, Andrzej Mrowiec
Andrzej Mrowiec,,
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, Karol Prałat IB - [Państwowa Wyższa Szkoła Zawodowa im. Prezydenta Stanisława Wojciechowskiego w Kaliszu]
Karol Prałat,,
- Insitute of Civil Engineering
- Państwowa Wyższa Szkoła Zawodowa im. Prezydenta Stanisława Wojciechowskiego w Kaliszu
, Maria Mucha
Maria Mucha,,
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Journal seriesJournal of Materials in Civil Engineering, ISSN 0899-1561
Issue year2018
Vol30
No3
Pages1-8
Publication size in sheets0.5
Keywords in Polish-
Keywords in English-
Abstract in Polish-
DOIDOI:10.1061/(ASCE)MT.1943-5533.0002177
Languageen angielski
Score (nominal)30
ScoreMinisterial score = 30.0, 05-01-2018, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 05-01-2018, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 1.644 (2) - 2016=2.003 (5)
Citation count*0
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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