Radiological and material characterization of high volume fly ash concrete
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
The main goal of research presented in this paper was the material and radiological characterization of high volume fly ash concrete (HVFAC) in terms of determination of natural radionuclide content and radon emanation and exhalation coefficients. All concrete samples were made with a fly ash content between 50% and 70% of the total amount of cementitious materials from one coal burning power plant in Serbia. Physical (fresh and hardened concrete density) and mechanical properties (compressive strength, splitting tensile strength and modulus of elasticity) of concrete were tested. The radionuclide content (Ra-226, Th-232 and (40)k) and radon massic exhalation of HVFAC samples were determined using gamma spectrometry. Determination of massic exhalation rates of HVFAC and its components using radon accumulation chamber techniques combined with a radon monitor was performed. The results show a beneficial effect of pozzolanic activity since the increase in fly ash content resulted in an in...crease in compressive strength of HVFAC by approximately 20% for the same mass of cement used in the mixtures. On the basis of the obtained radionuclide content of concrete components the I -indices of different HVFAC samples were calculated and compared with measured values (0.27-0.32), which were significantly below the recommended 1.0 index value. The prediction was relatively close to the measured values as the ratio between the calculated and measured I-index ranged between 0.89 and 1.14. Collected results of mechanical and radiological properties and performed calculations clearly prove that all 10 designed concretes with a certain type of fly ash are suitable for structural and non-structural applications both from a material and radiological point of view.
Ključne reči:
Fly ash / Concrete / NORM / I-index / Radon exhalationIzvor:
Journal of Environmental Radioactivity, 2017, 168, 38-45Izdavač:
- Elsevier Ltd
Finansiranje / projekti:
- European Union
- European Social Fund TAMOP 4.2.4. A/2-11-1-2012-0001
- Istraživanje mogućnosti primene otpadnih i recikliranih materijala u betonskim kompozitima, sa ocenom uticaja na životnu sredinu, u cilju promocije održivog građevinarstva u srbiji (RS-MESTD-Technological Development (TD or TR)-36017)
- COST Action TU1301
- State of Hungary
DOI: 10.1016/j.jenvrad.2016.06.021
ISSN: 0265-931X
PubMed: 27400654
WoS: 000394630600007
Scopus: 2-s2.0-85002561635
Institucija/grupa
GraFarTY - JOUR AU - Ignjatović, Ivan AU - Sas, Z. AU - Dragaš, Jelena AU - Somlai, J. AU - Kovacs, T. PY - 2017 UR - https://grafar.grf.bg.ac.rs/handle/123456789/848 AB - The main goal of research presented in this paper was the material and radiological characterization of high volume fly ash concrete (HVFAC) in terms of determination of natural radionuclide content and radon emanation and exhalation coefficients. All concrete samples were made with a fly ash content between 50% and 70% of the total amount of cementitious materials from one coal burning power plant in Serbia. Physical (fresh and hardened concrete density) and mechanical properties (compressive strength, splitting tensile strength and modulus of elasticity) of concrete were tested. The radionuclide content (Ra-226, Th-232 and (40)k) and radon massic exhalation of HVFAC samples were determined using gamma spectrometry. Determination of massic exhalation rates of HVFAC and its components using radon accumulation chamber techniques combined with a radon monitor was performed. The results show a beneficial effect of pozzolanic activity since the increase in fly ash content resulted in an increase in compressive strength of HVFAC by approximately 20% for the same mass of cement used in the mixtures. On the basis of the obtained radionuclide content of concrete components the I -indices of different HVFAC samples were calculated and compared with measured values (0.27-0.32), which were significantly below the recommended 1.0 index value. The prediction was relatively close to the measured values as the ratio between the calculated and measured I-index ranged between 0.89 and 1.14. Collected results of mechanical and radiological properties and performed calculations clearly prove that all 10 designed concretes with a certain type of fly ash are suitable for structural and non-structural applications both from a material and radiological point of view. PB - Elsevier Ltd T2 - Journal of Environmental Radioactivity T1 - Radiological and material characterization of high volume fly ash concrete EP - 45 SP - 38 VL - 168 DO - 10.1016/j.jenvrad.2016.06.021 ER -
@article{ author = "Ignjatović, Ivan and Sas, Z. and Dragaš, Jelena and Somlai, J. and Kovacs, T.", year = "2017", abstract = "The main goal of research presented in this paper was the material and radiological characterization of high volume fly ash concrete (HVFAC) in terms of determination of natural radionuclide content and radon emanation and exhalation coefficients. All concrete samples were made with a fly ash content between 50% and 70% of the total amount of cementitious materials from one coal burning power plant in Serbia. Physical (fresh and hardened concrete density) and mechanical properties (compressive strength, splitting tensile strength and modulus of elasticity) of concrete were tested. The radionuclide content (Ra-226, Th-232 and (40)k) and radon massic exhalation of HVFAC samples were determined using gamma spectrometry. Determination of massic exhalation rates of HVFAC and its components using radon accumulation chamber techniques combined with a radon monitor was performed. The results show a beneficial effect of pozzolanic activity since the increase in fly ash content resulted in an increase in compressive strength of HVFAC by approximately 20% for the same mass of cement used in the mixtures. On the basis of the obtained radionuclide content of concrete components the I -indices of different HVFAC samples were calculated and compared with measured values (0.27-0.32), which were significantly below the recommended 1.0 index value. The prediction was relatively close to the measured values as the ratio between the calculated and measured I-index ranged between 0.89 and 1.14. Collected results of mechanical and radiological properties and performed calculations clearly prove that all 10 designed concretes with a certain type of fly ash are suitable for structural and non-structural applications both from a material and radiological point of view.", publisher = "Elsevier Ltd", journal = "Journal of Environmental Radioactivity", title = "Radiological and material characterization of high volume fly ash concrete", pages = "45-38", volume = "168", doi = "10.1016/j.jenvrad.2016.06.021" }
Ignjatović, I., Sas, Z., Dragaš, J., Somlai, J.,& Kovacs, T.. (2017). Radiological and material characterization of high volume fly ash concrete. in Journal of Environmental Radioactivity Elsevier Ltd., 168, 38-45. https://doi.org/10.1016/j.jenvrad.2016.06.021
Ignjatović I, Sas Z, Dragaš J, Somlai J, Kovacs T. Radiological and material characterization of high volume fly ash concrete. in Journal of Environmental Radioactivity. 2017;168:38-45. doi:10.1016/j.jenvrad.2016.06.021 .
Ignjatović, Ivan, Sas, Z., Dragaš, Jelena, Somlai, J., Kovacs, T., "Radiological and material characterization of high volume fly ash concrete" in Journal of Environmental Radioactivity, 168 (2017):38-45, https://doi.org/10.1016/j.jenvrad.2016.06.021 . .