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 - [Lodz University of Technology]
Dariusz Heim,,
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, Andrzej Mrowiec - [Higher Vocational State School of President Stanislaw Wojciechowski]
Andrzej Mrowiec,,
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, Karol Prałat (FCEMP / ICEn) - [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 - [Lodz University of Technology]
Maria Mucha,,
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Journal seriesJournal of Materials in Civil Engineering, ISSN 0899-1561, (A 30 pkt)
Issue year2018
Vol30
No3
Pages1-8
Publication size in sheets0.5
Keywords in Polish-
Keywords in English-
ASJC Classification2211 Mechanics of Materials; 2500 General Materials Science; 2215 Building and Construction; 2205 Civil and Structural Engineering
Abstract in Polish-
DOIDOI:10.1061/(ASCE)MT.1943-5533.0002177
Languageen angielski
Score (nominal)30
ScoreMinisterial score = 30.0, 23-09-2019, ArticleFromJournal
Publication indicators Scopus Citations = 2; WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.334; WoS Impact Factor: 2017 = 1.763 (2) - 2017=2.256 (5)
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