Bitumen Coating as a Tool for Improving the Porosity and Chemical Stability of Simulated Cement-Waste Forms. (29th November 2012)

• Record Type: Journal Article
• Authors: Saleh, H. M.
• Other Names: Gervasini A. Academic Editor.; Wang Z. Academic Editor.
• Is Part Of: ISRN chemical engineering. Volume 2012(2012)
• Publication Date: 2012-11-29
• Subjects: Chemical engineering -- Periodicals; Chemical engineering; Periodicals; Electronic journals; 660
• DOI: 10.5402/2012/860459
• Languages: English
• ISSNs: 2090-861X

Abstract

Abstract : Coating of simulated cement-based waste form was investigated by performing physical and chemical experimental tests. Moreover, X-ray diffraction, Fourier transform infrared spectroscopy, and electron microscope examination were applied on coated and noncoated simulated waste forms. Experimental results indicated that coating process improved the characterizations of cement-based waste form such as porosity and leachability. Diffusion coefficients and leach indecies of coated specimens were calculated and showed acceptable values. It could be stated that by coating cemented-waste form by bitumen emulsion, the radioactive contaminants were isolated, thus reducing the back release to surrounding environment during flooding by groundwater and consequently, saving the environment.