Analysis of the thermal properties and structure of gypsum modified with cellulose based polymer and aerogels

• Autorzy: Prałat K. , Jaskulski R. , Ciemnicka J. , Makomaski G.

Identyfikatory

DOI

10.24425/ace.2020.135214

Warianty tytułu

PL

Analiza właściwości cieplnych i struktury gipsu modyfikowanego mikrododatkami

• Języki publikacji: EN

Abstrakty

EN

The work presents results of research on the influence of micro materials on the thermal conductivity λ of gypsum. In the research, cellulose-based polymer and aerogel were used as the modifying micro materials. For the purpose of measuring the thermal conductivity, a non-stationary method was used based on the “hot wire method”. A very precise set of devices for measuring and recording the temperature of the heating wire was used. In the presented solution, a single measurement took only one minute. Measurements were recorded with the help of a computer measuring system, with a sampling time of 0.01s. During the 60-second-long test, 6000 measurements of the heating wire temperature were collected. A decrease of the thermal conductivity and density of hardened gypsum with added micro materials was observed due to modifications of the structure of the final product. Experimental values of the thermal conductivity of the gypsum specimens with the addition of polymer and aerogel were respectively over 23% and 6% lower than the non-modified gypsum specimen.

PL

W pracy przedstawiono wyniki pomiarów przewodności cieplnej λ czystego gipsu, a także jego modyfikacji mikrododatkami takimi jak: polimer (hydroksymetylo etylo celuloza - HEMC) i aerożel. Dodatkowo zbadano zmiany struktury modyfikowanych materiałów. Badania przewodności cieplnej oparte są na zaprojektowanym i nowatorskim stanowisku pomiarowym wykorzystującym metodę "gorącego drutu". Czas trwania pomiaru przewodności cieplnej za pomocą komercyjnych urządzeń doświadczalnych mieści się w zakresie 0,5÷4 h, tymczasem w prezentowanych badaniach pojedynczy pomiar trwał minutę. Wyniki uzyskiwane podczas pomiaru rejestrowano za pomocą komputerowego systemu pomiarowego, z czasem próbkowania wynoszącym 0,01s. Podczas 60-sekundowego testu zebrano 6000 pomiarów temperatury drutu grzejnego.

Słowa kluczowe

EN

thermal conductivity; micro additive; structure; hot wire method; modified gypsum; cellulose based polymer; aerogel

PL

przewodność cieplna; mikrododatek; struktura; metoda gorącego drutu; gips modyfikowany; polimer na bazie celulozy; aerożel

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2020
• Tom: Vol. 66, nr 4
• Strony: 153--168
• Opis fizyczny: Bibliogr. 33 poz., il., tab.

Twórcy

autor

Prałat K.

• Warsaw University of Technology, Faculty of Civil Engineering, Mechanics and Petrochemistry, Płock, Poland

autor

Jaskulski R.

• Warsaw University of Technology, Faculty of Civil Engineering, Mechanics and Petrochemistry, Płock, Poland

autor

Ciemnicka J.

• Warsaw University of Technology, Faculty of Civil Engineering, Mechanics and Petrochemistry, Płock, Poland

autor

Makomaski G.

• Warsaw University of Technology, Faculty of Civil Engineering, Mechanics and Petrochemistry, Płock, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).