Practical application of the microwave oven in the geotechnical laboratory

• Autorzy: Jastrzębska Małgorzata

Identyfikatory

DOI

10.21307/ACEE-2019-026

• Języki publikacji: EN

Abstrakty

EN

The main purpose of the paper is to present the usefulness of microwave ovens in the everyday work of geotechnical laboratories. Microwave ovens are commonly used to determine soil moisture and to dry soils that are too moist for other laboratory tests. The activities related to the above processes are not standarized in the majority of countries. The only available guidelines are based on the research projects. For the purpose of this particular research 345 tests have been conducted for moisture content determination for 3 soil types: fine sand (FSa; SP - poorly graded sand), sandy gravel (saGr; GW well graded gravel-sand mixtures) and silty clay (siCl; CH - inorganic clay of high plasticity), using both - standard and microwave methods. The research cycle consisted of 3 different variants which includes soil moisture content, specimen initial mass, number of specimens in microwave oven and their placing. It was established that different factors have impact on the length of the process and it lasted between 2 to 17 minutes. During the heating different undesirable phenomena were observed, e.g., soil explosions or melting and glowing of clay. Based on the above research results this paper introduces guidelines for the soil drying process in the microwave oven (the optimization of the procedure and handling of the dried samples).

Słowa kluczowe

EN

clay; conventional oven; drying time; gravel; microwave ovens; moisture content; sand; specimen mass; specimens number

PL

ił; piekarnik konwencjonalny; czas schnięcia; żwir; kuchenka mikrofalowa; zawartość wilgoci; piasek; masa próbki; liczba okazów

• Wydawca: Silesian University of Technology
• Czasopismo: Architecture Civil Engineering Environment
• Rocznik: 2019
• Tom: Vol. 12, no. 2
• Strony: 91--104
• Opis fizyczny: Bibliogr. 43 poz.

Twórcy

autor

Jastrzębska Małgorzata

• Associate Professor; Department of Geotechnics and Roads, Faculty of Civil Engineering, Silesian University of Technology, ul. Akademicka 5, 44-100 Gliwice, Poland

Bibliografia

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Uwagi

PL

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