Possibility of using expanded perlite as texturising aggregate in lightweight polymer plasters - impact on thermal and mechanical properties of coating

• Autorzy: Marchewka Izabela , Downar-Zapolska Ewa , Pichór Waldemar

Identyfikatory

DOI

10.62753/ctp.2024.03.4.4

• Języki publikacji: EN

Abstrakty

EN

The final form of an external wall is made of many layers of materials. Each of them is important from the point of view of its properties. This work focusses on the possibility of modifying the thermal insulation properties of the finishing layer of the facade, the polymer plaster. To reduce the heat conduction coefficient, the standard marble texture aggregate was re placed with a light filler, expanded perlite. It is a highly porous material obtained due to the expansion process of natural volcanic rock. However, its use in building materials is associated with many complications resulting from its low mechanical properties and high water absorption. In this work, the appropriate selection of light fillers allowed the thermal conductivity coefficient to be reduced to as low as 0.125 W/mK. This value is six times lower than the reference sample. This was also accompanied by changes in the coating's impact resistance and adhesion to the substrate. The addition of expanded perlite significantly contributed to the deterioration of these parameters. Therefore, the amount of expanded perlite in the plaster recipe requires optimization to a level that maintains the necessary functional properties of the coating.

Słowa kluczowe

EN

polymer plaster; lightweight fillers; expanded perlite; thermal insulation materials

PL

tynk polimerowy; lekkie wypełniacze; perlit ekspandowany; materiały termoizolacyjne

• Wydawca: Polskie Towarzystwo Materiałów Kompozytowych
• Czasopismo: Composites Theory and Practice
• Rocznik: 2024
• Tom: R. 24, nr 4
• Strony: 226--230
• Opis fizyczny: Bibliogr. 11 poz., rys., tab.

Twórcy

autor

Marchewka Izabela

• Lakma SAT, Cieszyn, Poland

autor

Downar-Zapolska Ewa

• Lakma SAT, Cieszyn, Poland

autor

Pichór Waldemar

• AGH - University of Science and Technology, Faculty of Materials Science and Ceramics, al. A. Mickiewicza 30, 30-059 Krakow, Poland

Bibliografia

• [1] Marchewka I., Downar-Zapolska E., Pichór W., Thermal, mechanical and moisture properties of polymer plaster modified with lightweight fillers, Composites Theory and Practice 2022, 22(3), 160-165.
• [2] Bouvard D., Chaix J.M., Dendievel R., Fazekas A., Le´tang J.M, Peix G. et al., Characterization and simulation of microstructure and properties of lightweight EPS concrete, Cement and Concrete Research 2007, 37(12), 1666-1673.
• [3] Kramar D., Bindiganavile V., Impact response of light weight mortars containing expanded perlite, Cement & Concrete Composites 2013, 37, 205-214.
• [4] Gao T., Jelle B.P., Gustavsen A., Jacobsen S., Aerogel incorporated concrete: An experimental study, Construction and Building Materials 2014, 52, 130-136.
• [5] Miled K., Sab K., Le Roy R., Effect of particle size on EPS lightweight concrete compressive strength: Experimental investigation and modelling, Mechanics of Materials 2007, 39(3), 222-240.
• [6] Lotfy A., Hossain K.M.A., Lachemi M., Lightweight self consolidating concrete with expanded shale aggregates: Modelling and optimisation, International Journal of Con crete Structures and Materials 2015, 9(2), 185-206.
• [7] Bjørn B., The Ecology of Building Materials, Translated by Ch. Butters and F. Henley, Elsevier 2009, 1-421.
• [8] Kimball Suzette M., Menial Commodity Summaries 2016, Department of the Interior, U.S. Geological Survey 2016, 1-1202.
• [9] Oktay H., Yumruts R., Akpolat A., Mechanical and thermo physical properties of light weight aggregate concretes, Construction and Building Materials 2015, 96, 217-225.
• [10] Sriwattanapong M., Sinsiri T., Pantawee S., Chindaprasirt P., A study of lightweight concrete admixed with perlite, Suranarre Journal of Science and Technology 2013, 20(3), 224-234.
• [11] Rashad A.M., A synopsis about perlite as building material - A best practice guide for Civil Engineer, Construction and Building Materials 2016, 121, 338-353.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).