The effect of the autoclaving process and addition of silica fume on Portland cement in shielding gamma radiation

Photon attenuation properties of concrete produced with pumice aggregate and colemanite addition in different rates and the effect of curing age to these properties

“…In some other studies (Oto et al, 2013;Demir and Keles, 2006;Demir et al, 2010;Demir, 2010;Boncukçuo glu et al, 2005;Binici et al, 2014;Korkut et al, 2010) shielding properties of the concrete with boron and boron waste additions were investigated. Furthermore, miscellaneous studies related to radiation shielding of ordinary concrete, heavyweight concrete, cement and with a variety of additives and mixtures also exist, (Kurudirek et al, 2009;Kharita et al, 2009Kharita et al, , 2008Sharifi et al, 2013;Facure and Silva, 2007;Makarious et al, 1996;Ş ahin et al, 2011;ElSayed Abdo, 2002;Mostofinejad et al, 2012;El-Khayatt, 2010;Turkmen et al, 2008;Gencel et al, 2011;Bashter, 1997;Yılmaz et al, 2011;Binici et al, 2014;El-Faramawy and El-Hosiny, 1998;ElHosiny and El-Faramawy, 2000;Akkurt et al, 2010a,b,c;Akkurt et al, 2005Akkurt et al, , 2006.…”

Cement based electromagnetic shielding and absorbing building materials

“…When the plain cement paste is cured at 100% relative humidity for 24 h and hydrothermally autoclaved at a pressure of 8 atm of saturated steam for 12 h, it can also obtain the attenuation coefficient of 0.25. Also the use of 5% silica fume can reduce the time of autoclaving from 12 h to 6 h [29].…”

A study of chemical composition and radiation attenuation properties in clinoptilolite-rich natural zeolite from Turkey

“…While comprehensive calculations of radiation attenuation for elements are available in the literature, the data for composite materials, especially for building materials, are fairly scarce. A limited number of studies dealt with radiation attenuation parameters in Portland cement mixed with different additives (El-Faramawy and El-Hosiny, 1998, 2000, Kurudirek et al, 2009. Damla et al (2009) also contributed to find the mass attenuation coefficients in some gas concrete samples.…”