Development of solidification techniques with minimised water content for secondary radioactive aqueous wastes in Fukushima, 4; Heat-treatment of phosphate modified calcium aluminate cement under open system

Garca-Lodeiro, I.*; Jin, F.*; Irisawa, Keita ; Meguro, Yoshihiro ; Kinoshita, Hajime*

The present study investigates the effect of water loss during the curing of phosphate-modified CAC system at different temperatures (35 $^{circ}$ C, 60 $^{circ}$ C, 90 $^{circ}$ C, 180 $^{circ}$ C) in open systems. Experimental results indicate that these phosphate-based cements do not form the conventional CAC crystalline hydration products at these temperatures but provide structural integrity despite a significant amount of water loss. Hydroxyapatite was detected at temperatures 60 $^{circ}$ C.

Language	:	English
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Meeting title	:	日本原子力学会2016年秋の大会
Held date	:	2016/09
Location (city)	:	久留米
Location (country)	:	日本
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Keywords	:	Calcium Aluminate Cement; Phosphates; C-A-P-H gel; Hydroxyapatite; Fukushima Daiichi Nuclear Power Station Accident; 福島第一原子力発電所事故
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Cooperating Institute	:	University of Sheffield

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Registration No. : BB20160387
JAEA Abstracts No. :
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