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Yasue, Ayumu*; Kobayashi, Kensuke*; Yoshioka, Masahiro*; Noma, Takashi*; Okuno, Koichi*; Tanaka, Seiichiro*; Hirata, Yoshikazu*; Ooka, Tokunao*; Kimura, Yoshiharu*; Nagai, Tomoya*; et al.
Journal of Advanced Concrete Technology, 21(5), p.337 - 350, 2023/05
Times Cited Count:0 Percentile:0.00(Construction & Building Technology)The purpose of this study was to evaluate the use of resin injection to repair cracks in ultra-high-strength concrete (UHSC) members. As a preliminary step, the applicability of the neutron diffraction method (NDM) to investigate the effect of repairs in UHSC specimens was examined. The experimental results showed that the NDM can measure stresses in rebars in UHSC and normal concrete specimens. Therefore, in this experiment, the NDM was used to measure the bond performance of repairs with epoxy resin around the slit in normal concrete and UHSC specimens and examine the effect of repair on the UHSC specimens. Displacement around the slit was measured using a PI-shape displacement transducer. The evaluation confirmed that the bond performance of the repaired area was recovered by resin injection regardless of the concrete strength. In addition, the displacement around the slit was smaller for the injected specimens than the noninjected specimens. These experimental results clarified that by injecting resin, the same bond repair effect could be obtained in UHSC and normal concrete specimens.
Nakajima, Kaoru*; Nagano, Kengo*; Suzuki, Motofumi*; Narumi, Kazumasa; Saito, Yuichi; Hirata, Koichi*; Kimura, Kenji*
Applied Physics Letters, 104(11), p.114103_1 - 114103_4, 2014/03
Times Cited Count:7 Percentile:29.58(Physics, Applied)Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Narumi, Kazumasa
Nuclear Instruments and Methods in Physics Research B, 314, p.39 - 42, 2013/11
Times Cited Count:4 Percentile:31.99(Instruments & Instrumentation)Tsuchida, Hidetsugu*; Majima, Takuya*; Tomita, Shigeo*; Sasa, Kimikazu*; Narumi, Kazumasa; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Hirata, Koichi*; Shibata, Hiromi*; et al.
Nuclear Instruments and Methods in Physics Research B, 315, p.336 - 340, 2013/11
Times Cited Count:3 Percentile:25.92(Instruments & Instrumentation)Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Narumi, Kazumasa; Kamiya, Tomihiro
JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 165, 2013/01
Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Takahashi, Yasuyuki*; Narumi, Kazumasa; Kamiya, Tomihiro
JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 156, 2012/01
Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Narumi, Kazumasa
Applied Physics Express, 4(11), p.116202_1 - 116202_3, 2011/11
Times Cited Count:8 Percentile:33.83(Physics, Applied)Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Takahashi, Yasuyuki*; Narumi, Kazumasa
Review of Scientific Instruments, 82(3), p.033101_1 - 033101_5, 2011/03
Times Cited Count:10 Percentile:43.72(Instruments & Instrumentation)Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Takahashi, Yasuyuki; Narumi, Kazumasa
Nuclear Instruments and Methods in Physics Research B, 268(19), p.2930 - 2932, 2010/10
Times Cited Count:3 Percentile:28.29(Instruments & Instrumentation)Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Adachi, Masahiro*; Yamada, Keisuke; Narumi, Kazumasa
Nuclear Instruments and Methods in Physics Research B, 266(10), p.2450 - 2452, 2008/05
Times Cited Count:13 Percentile:63.45(Instruments & Instrumentation)Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Narumi, Kazumasa
Applied Physics Express, 1(4), p.047002_1 - 047002_3, 2008/04
Times Cited Count:4 Percentile:18.42(Physics, Applied)Saeki, Morihisa; Hirata, Koichi*; Sakka, Tetsuo*; Oba, Hironori; Yokoyama, Atsushi
Journal of Applied Physics, 98(4), p.044912_1 - 044912_6, 2005/08
Times Cited Count:3 Percentile:13.51(Physics, Applied)no abstracts in English
Watanabe, Koichiro*; Rokuhira, Kazuyoshi*; Matsuda, Hiroko*; Arima, Yasuhiro*; Hirata, Hiroshi*; Kume, Tamikazu; Matsuhashi, Shimpei
Nihon Dojo Hiryo Gaku Zasshi, 72(6), p.793 - 796, 2001/12
no abstracts in English
Hirata, Koichi*; Arai, Hideyuki*; Kawasuso, Atsuo; Sekiguchi, T.*; Kobayashi, Yoshinori*; Okada, Sohei
Journal of Applied Physics, 90(1), p.237 - 242, 2001/07
Times Cited Count:4 Percentile:21.58(Physics, Applied)no abstracts in English
Saito, Yuichi; Mizuhashi, Kiyoshi; Tajima, Satoshi; Arakawa, Kazuo; Hirata, Koichi*; Kobayashi, Yoshinori*
JAERI-Conf 2000-019, p.93 - 96, 2001/02
no abstracts in English
Kuroda, Toshimasa*; Yoshida, Hiroshi; Takatsu, Hideyuki; Seki, Yasushi; Noda, Kenji; Watanabe, H.; Koizumi, Koichi; Nishio, Satoshi; ; ; et al.
JAERI-M 91-133, 191 Pages, 1991/08
no abstracts in English
Hirata, Koichi*; Saito, Yuichi; Narumi, Kazumasa; Chiba, Atsuya; Yamada, Keisuke; Kamiya, Tomihiro
no journal, ,
no abstracts in English
Tsuchida, Hidetsugu*; Majima, Takuya*; Tomita, Shigeo*; Sasa, Kimikazu*; Narumi, Kazumasa; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Hirata, Koichi*; Shibata, Hiromi*; et al.
no journal, ,
Narumi, Kazumasa; Saito, Yuichi; Chiba, Atsuya; Adachi, Masahiro; Naramoto, Hiroshi*; Seki, Shu*; Hirata, Koichi*; Iwase, Akihiro*; Kaneko, Toshiaki*; Shibata, Hiromi*
no journal, ,
no abstracts in English
Tsuchida, Hidetsugu*; Nakajima, Kaoru*; Yokoe, Junya*; Sugiyama, Motohiko*; Ota, Yushi*; Majima, Takuya*; Shibata, Hiromi*; Tomita, Shigeo*; Sasa, Kimikazu*; Hirata, Koichi*; et al.
no journal, ,
no abstracts in English