Mortar Mix Design Of Low Diffusion Layer for Subsurface Radioactive Waste Disposal Facilities in Japan
This paper describes the mix design procedure of the low diffusion layer of cementitiou materials for the sub-surface disposal facility from the view points of the materials selection and mix proportion. The process to select mortar mix design of the low diffusion layer is explained in detail. At first the comparative test of all the 33 mix proportions based on these narrowed-down materials is conducted in the laboratories. The mortar is selected for the low diffusion layer, so that the mortar eliminates the transition zone that is said to form around the coarse aggregate and turn it into capable of reducing the amount of void 100 nm or more in pore diameter to improve the low diffusion. Of all the 33 mix proportions used in laboratory comparative testing, the provisional mix proportion of low diffusion layers, using low-heat portland cement, fly-ash, and an expansive admixture was selected. At last step, field demonstration tests conducted by using fullsize models. As a result, it was demonstrated that the design procedure for the materials and mix proportion was evaluated as being appropriate and the low diffusion layer built by using a general method of construction with selected materials and mix proportion could exhibit the required initial performance.
low diffusion layer crack control effective diffusion coefficient of tritium radioactive waste disposal facilities
K. Niwase N.Sugihashi Y.Tsuji
Japan Nuclear Fuel Limited, 504-22, Aza Nozuki, Oaza Obuchi, Rokkasyo-mura,Kamikita-gun,Aomori Prefe Shimizu Corporation,Civil Engineering Technology Division, SEAVANS SOUTH, No.2-3, Shibaura 1-chome, Gunma University, Department of Civil and Environmental Engineering, 1-5-1 Tenjin-cho, Kiryushi, Gun
国际会议
济南
英文
489-498
2010-05-09（万方平台首次上网日期，不代表论文的发表时间）