Thermal analysis testing and natural radioactivity characterization of kaolin as building material
Authorized Users Only

2018
Authors
Janković, Bojan Ž.
Janković, Marija M.

Marinović-Cincović, Milena

Todorović, Dragana

Sarap, Nataša

Article (Published version)
Metadata
Show full item recordAbstract
Kaolins are used in a multiplicity of industries because of unique physical and chemical properties. Relationships between thermal and radioactivity properties are discussed in its application as a building material. Super-fine kaolin powder with particle sizes about 30 mu m was analyzed. Simultaneous TGA/DTA analysis was performed on powder samples at various heating rates in an argon atmosphere. Based on investigated thermal properties, it was concluded that dehydroxylation process can vary depending on the characteristics of starting material. The maximum degree of the dehydroxylation (D (T)) was obtained at the lowest rate of heating (D (T) = 60.79% for 10 A degrees C min(-1)). With an increase in the heating rate, decline in D (T) value was observed. Based on comprehensive testing, it was identified that the degree of dehydroxylation does not drop below 50%. It was concluded that appointed experimental conditions seem sufficient admissible for obtaining degree of dehydroxylation (...D (T)) higher than 50%. In order to safe use of kaolin as a building material from the standpoint of radiological safety, content of natural radionuclides was determined by gamma spectrometry.
Keywords:
Building materials / degree of the dehydroxylation / natural radioactivity / powder kaolin sampleSource:
Journal of Thermal Analysis and Calorimetry, 2018, 133, 1, 481-487Funding / projects:
- Dynamics of nonlinear physicochemical and biochemical systems with modeling and predicting of their behavior under nonequilibrium conditions (RS-172015)
- Advanced technologies for monitoring and environmental protection from chemical pollutants and radiation burden (RS-43009)
- Materials of Reduced Dimensions for Efficient Light Harvesting and Energy conversion (RS-45020)
DOI: 10.1007/s10973-018-7159-1
ISSN: 1388-6150; 1588-2926
WoS: 000435398700047
Scopus: 2-s2.0-85043397442
URI
http://link.springer.com/10.1007/s10973-018-7159-1https://vinar.vin.bg.ac.rs/handle/123456789/7777
Collections
Institution/Community
VinčaTY - JOUR AU - Janković, Bojan Ž. AU - Janković, Marija M. AU - Marinović-Cincović, Milena AU - Todorović, Dragana AU - Sarap, Nataša PY - 2018 UR - http://link.springer.com/10.1007/s10973-018-7159-1 UR - https://vinar.vin.bg.ac.rs/handle/123456789/7777 AB - Kaolins are used in a multiplicity of industries because of unique physical and chemical properties. Relationships between thermal and radioactivity properties are discussed in its application as a building material. Super-fine kaolin powder with particle sizes about 30 mu m was analyzed. Simultaneous TGA/DTA analysis was performed on powder samples at various heating rates in an argon atmosphere. Based on investigated thermal properties, it was concluded that dehydroxylation process can vary depending on the characteristics of starting material. The maximum degree of the dehydroxylation (D (T)) was obtained at the lowest rate of heating (D (T) = 60.79% for 10 A degrees C min(-1)). With an increase in the heating rate, decline in D (T) value was observed. Based on comprehensive testing, it was identified that the degree of dehydroxylation does not drop below 50%. It was concluded that appointed experimental conditions seem sufficient admissible for obtaining degree of dehydroxylation (D (T)) higher than 50%. In order to safe use of kaolin as a building material from the standpoint of radiological safety, content of natural radionuclides was determined by gamma spectrometry. T2 - Journal of Thermal Analysis and Calorimetry T1 - Thermal analysis testing and natural radioactivity characterization of kaolin as building material VL - 133 IS - 1 SP - 481 EP - 487 DO - 10.1007/s10973-018-7159-1 ER -
@article{ author = "Janković, Bojan Ž. and Janković, Marija M. and Marinović-Cincović, Milena and Todorović, Dragana and Sarap, Nataša", year = "2018", abstract = "Kaolins are used in a multiplicity of industries because of unique physical and chemical properties. Relationships between thermal and radioactivity properties are discussed in its application as a building material. Super-fine kaolin powder with particle sizes about 30 mu m was analyzed. Simultaneous TGA/DTA analysis was performed on powder samples at various heating rates in an argon atmosphere. Based on investigated thermal properties, it was concluded that dehydroxylation process can vary depending on the characteristics of starting material. The maximum degree of the dehydroxylation (D (T)) was obtained at the lowest rate of heating (D (T) = 60.79% for 10 A degrees C min(-1)). With an increase in the heating rate, decline in D (T) value was observed. Based on comprehensive testing, it was identified that the degree of dehydroxylation does not drop below 50%. It was concluded that appointed experimental conditions seem sufficient admissible for obtaining degree of dehydroxylation (D (T)) higher than 50%. In order to safe use of kaolin as a building material from the standpoint of radiological safety, content of natural radionuclides was determined by gamma spectrometry.", journal = "Journal of Thermal Analysis and Calorimetry", title = "Thermal analysis testing and natural radioactivity characterization of kaolin as building material", volume = "133", number = "1", pages = "481-487", doi = "10.1007/s10973-018-7159-1" }
Janković, B. Ž., Janković, M. M., Marinović-Cincović, M., Todorović, D.,& Sarap, N.. (2018). Thermal analysis testing and natural radioactivity characterization of kaolin as building material. in Journal of Thermal Analysis and Calorimetry, 133(1), 481-487. https://doi.org/10.1007/s10973-018-7159-1
Janković BŽ, Janković MM, Marinović-Cincović M, Todorović D, Sarap N. Thermal analysis testing and natural radioactivity characterization of kaolin as building material. in Journal of Thermal Analysis and Calorimetry. 2018;133(1):481-487. doi:10.1007/s10973-018-7159-1 .
Janković, Bojan Ž., Janković, Marija M., Marinović-Cincović, Milena, Todorović, Dragana, Sarap, Nataša, "Thermal analysis testing and natural radioactivity characterization of kaolin as building material" in Journal of Thermal Analysis and Calorimetry, 133, no. 1 (2018):481-487, https://doi.org/10.1007/s10973-018-7159-1 . .