Ippei MARUYAMA
著者に関連した記事は2件です。
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第14回
ASRポテンシャル評価のための骨材試験方法に関する評価
著者:
江藤 淳二,Junji ETOH,落合 孝正,Takamasa OCHIAI,小川 彰一,Shoiti OGAWA,渋谷 和俊,Shibuya KAZUTOSHI,丸山 一平,Ippei MARUYAMA,山田 一夫,Kazuo YAMADA,滝沢 真之,Masayuki TAKIZAWA
発刊日:
公開日:
キーワードタグ:
Aggregate ASR CPT RILEM AAR- 4 RILEM AAR-3
江藤 淳二,Junji ETOH,落合 孝正,Takamasa OCHIAI,小川 彰一,Shoiti OGAWA,渋谷 和俊,Shibuya KAZUTOSHI,丸山 一平,Ippei MARUYAMA,山田 一夫,Kazuo YAMADA,滝沢 真之,Masayuki TAKIZAWA
発刊日:
公開日:
キーワードタグ:
Aggregate ASR CPT RILEM AAR- 4 RILEM AAR-3
Test method has not been maintained for late-expansive aggregates (which cause cracks in concrete after 10 years or more), in addition to the early-expansive aggregates which have been considered as the major cause of ASR in Japan. In order to confirm the effectiveness of the aggregate test method of JNES flow (the method mainly composed of international methods RILEM AAR - 3 and AAR - 4) and to prepare applicable aggregate test method, we conducted comparative tests using domestic and foreign aggregate...
英字タイトル:
Evaluation on Aggregate Testing Method for ASR Potential Evaluation
英字タイトル:
Evaluation on Aggregate Testing Method for ASR Potential Evaluation
第17回
Radiation-Induced Volume Expansion in Concrete Aggregate Minerals Studied by Ion Irradiation and Step Height Measurement
著者:
Muammar Hawary Patris, Kenta Murakami, Luu Vu Nhut, Xinrun Chen,（長岡技科大）, Ippei Maruyama,（名古屋大）, Takahiro Ohkubo,（千葉大）, Kiyoteru Suzuki,（三菱総研）
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aggregate minerals amorphization Ion irradiation radiation-induced volume expansion
Muammar Hawary Patris, Kenta Murakami, Luu Vu Nhut, Xinrun Chen,（長岡技科大）, Ippei Maruyama,（名古屋大）, Takahiro Ohkubo,（千葉大）, Kiyoteru Suzuki,（三菱総研）
発刊日:
公開日:
キーワードタグ:
aggregate minerals amorphization Ion irradiation radiation-induced volume expansion
Long-term radiation exposure can cause damage of concrete structures due to the volume expansion of the aggregate minerals. In this study, granite, sandstone, and tuff were irradiated with 2.8 MeV Fe2+ at room temperature to different level of ion fluences. Step height measurement was conducted to quantify the volume change. It was found that the swelling of all minerals saturated at around 300 nm. Tuff, which contains almost all silica, exhibited the fastest swelling, among others.
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