Oral presentation

IV. Nuclear Fuel Cycle and Nuclear Materials » 405-2 Waste Disposal and Its Environmental Aspects

[2H04-09] Cement

Thu. Sep 14, 2017 10:20 AM - 12:00 PM Room H (C212 - C Block)

Chair:Hitoshi Owada (RWMC)

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10:20 AM - 10:35 AM

[2H04] In-situ experiment project on the chemical interaction among barrier materials

M-S-H precipitation by the reaction between sedimentary rock and alkali leachate in paleoseawater environment

*Satoru Miyoshi¹, Yukinobu Kimura¹, Urs Maeder², Veerle Cloet³ (1. Obayashi Corporation, 2. University of Bern, 3. NAGRA)

10:35 AM - 10:50 AM

[2H05] Study of the effects on surrounding rock and groundwater from shotcrete using low alkaline cement in Horonobe URL

*Masashi Nakayama¹, Reiko Okamoto², Mitsuyasu Shirase² (1. JAEA, 2. TAISEI CORPORATION)

10:50 AM - 11:05 AM

[2H06] Evaluation of deterioration of hardened cement paste by interaction with groundwater

*Masahito Shibata¹, Kazuko Haga¹, Hideyuki Hokora¹, tsuneki ichikawa² (1. Taiheiyo Consultant Co.,Ltd, 2. Hokkaido University)

11:05 AM - 11:20 AM

[2H07] Evaluation of decommissioning and waste management strategies for contaminated concrete structures

(1)Effects of microstructure on the diffusion behavior of Na⁺ions in hardened cement paste

*Kai Hashibe¹, Tamotsu Kozaki², Naoko Watanabe², Shingo Tanaka², Hiroaki Takiya³, Naoya Hara⁴ (1. Graduate School of Engineering Hokkaido University, 2. Faculty of Engineering Hokkaido University, 3. Japan Atomic Energy Agency, 4. Graduate School of Engineering, Tohoku University)

11:20 AM - 11:35 AM

[2H08] Effect of sodium on thaumasite formation

*Hideyuki Hokora¹, Masahito Shibata¹, Haruka Takahashi¹, Shoichi Ogawa¹, Kazuko Haga¹ (1. Taiheiyo Consultant Co., Ltd.)

11:35 AM - 11:50 AM

[2H09] Suppressing effect of fly ash on expansion of mortar due to delayed ettringite formation studied by solid-state NMR

*Sadayuki Watanabe¹, Toru Yoshino¹, Yuichiro Kawabata², Haruka Takahashi³, Shoichi Ogawa³ (1. TIRI, 2. PARI, 3. Taiheiyo Consultant Co., Ltd.)

Time reserved for Chair (11:50 AM - 12:00 PM)

Session information

[2H04-09] Cement

[2H04] In-situ experiment project on the chemical interaction among barrier materials

M-S-H precipitation by the reaction between sedimentary rock and alkali leachate in paleoseawater environment

[2H05] Study of the effects on surrounding rock and groundwater from shotcrete using low alkaline cement in Horonobe URL

[2H06] Evaluation of deterioration of hardened cement paste by interaction with groundwater

[2H07] Evaluation of decommissioning and waste management strategies for contaminated concrete structures

(1)Effects of microstructure on the diffusion behavior of Na⁺ions in hardened cement paste

[2H08] Effect of sodium on thaumasite formation

[2H09] Suppressing effect of fly ash on expansion of mortar due to delayed ettringite formation studied by solid-state NMR

Authentication

Session information

[2H04-09] Cement

[2H04] In-situ experiment project on the chemical interaction among barrier materials

M-S-H precipitation by the reaction between sedimentary rock and alkali leachate in paleoseawater environment

[2H05] Study of the effects on surrounding rock and groundwater from shotcrete using low alkaline cement in Horonobe URL

[2H06] Evaluation of deterioration of hardened cement paste by interaction with groundwater

[2H07] Evaluation of decommissioning and waste management strategies for contaminated concrete structures

(1)Effects of microstructure on the diffusion behavior of Na+ ions in hardened cement paste

[2H08] Effect of sodium on thaumasite formation

[2H09] Suppressing effect of fly ash on expansion of mortar due to delayed ettringite formation studied by solid-state NMR

Authentication

(1)Effects of microstructure on the diffusion behavior of Na⁺ions in hardened cement paste