研究者詳細 - 日比野　誠

論文 - 日比野　誠

分割表示21 件中 1 - 20 件目／全件表示 >>

ASR resistance of concrete member using blast furnace slag based on gel fluorescence method 査読有り国際誌

Goda H., Okubo K., Hibino M., Sagawa Y.

Bridge Safety, Maintenance, Management, Life-Cycle, Resilience and Sustainability - Proceedings of the 11th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2022 2085 - 2092 2023年01月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

Currently, admixtures that have an inhibitory effect against alkali-silica reaction (ASR) are stipulated as a measure to suppress ASR in new structures. One of the admixtures is blast furnace slag fine powder (BFS), but there have been cases where ASR occurred despite using concrete to which BFS was added. Further studies are needed on the ASR-suppressing effects of BFS. Therefore, in this study, the expansion and the decreasing rate of the strength characteristics was discussed. In the experiment, the expansion rate of concrete under different curing environments was measured by the concrete prism method with the addition rate of BFS as a parameter. In addition to clarifying the correlation between the addition rate of BFS and temperature, the spatial distribution of the gel generated around the aggregate was evaluated by the gel fluorescence method for specimens with remarkable expansion.

DOI： 10.1201/9781003322641-258

Scopus

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85186121948&origin=inward

Evaluation of ASR resistance of geopolymers using industrial by-products for application to bridges 査読有り国際誌

Goda H., Shinkai K., Hibino M., Harada K.

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

In Japan, where reactive aggregates are common, geopolymers are attracting attention as a new construction material with low CO2 emissions. Geopolymer(GP) is considered to be highly resistant to Alkali Silica Reaction(ASR) because of its alumina and silica binder. In order to study the ASR resistance of geopoly-mers, experiments were carried out focusing on the admixture ratio of blast furnace slag fine powder (BFS) and the solution powder ratio. The results showed that the expansion of GP smaller than that of ordinary Portland cement concrete(OPC), even though the microstructure of the hardened concrete became denser with the increase of BFS admixture. Differences in the proportion of powder in the solution were not correlated with the expansion rate. Finally, the amount of CaO in the case of 200 kg/m3 of excessively high FA was close to 0.1%, which is considered harmful, but the general formulation applied to PC girders was shown to be sufficiently safe against ASR.

DOI： 10.1201/9781003322641-257

Scopus

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85186121886&origin=inward

針尾無線塔の計画・建造に携わった技術者とその時代のコンクリート施工技術についての調査報告～広井勇博士に繋がる人脈～（共著）査読有り

小川健，日比野誠，岡林隆敏，松田浩

土木構造・材料論文集 ( 九州橋梁・構造工学研究会 ) ( 38 ) 131 - 140 2022年12月

古写真及び現存構造物による針尾無線塔の施工方法の推定と施工期間の検証（共著）査読有り

小川健，日比野誠，岡林隆敏，松田浩

土木構造・材料論文集 ( 九州橋梁・構造工学研究会 ) ( 38 ) 141 - 150 2022年12月

Effects of Mineral Admixtures on Macrocell Corrosion Behaviors of Steel Bars in Chloride-Contaminated Concrete 査読有り国際誌

Cao Z.L., Su Z.C., Hibino M., Goda H.

International Journal of Corrosion 2022 2022年08月

記述言語：英語掲載種別：研究論文（学術雑誌）

Based on the macrocell corrosion theory and by alternating the microcell corrosion state and macrocell corrosion state, the influence of mineral admixtures, such as fly ash, slag, and limestone powder, on the macrocell corrosion behaviors of steel bars embedded in chloride-contaminated concrete were investigated and clarified. The results indicated that the inhibition effect induced by slag on macrocell corrosion and microcell corrosion was obviously better than that induced by fly ash or limestone powder. The presence of slag in chloride-contaminated concrete could remarkably decrease the corrosion area ratios of anodic steel, even if the replacement levels of slag to cement reached 70%. With the addition of mineral admixtures into concrete, the ratio of macrocell current density to microcell current density was decreased to some extent, depending on the types, replacement levels, and replacement ways of mineral admixtures. The use of slag and fly ash in chloride-contaminated concrete can effectively weaken the macrocell corrosion and make the corrosion be dominated by microcell corrosion. The types and replacement levels of mineral admixtures also had a remarkable influence on the control mode of macrocell corrosion. The use of slag was more effective than that of fly ash or limestone to weaken the cathode control mode of macrocell corrosion and made the control mode of macrocell corrosion be dominated by jointed control.

DOI： 10.1155/2022/3332123

Scopus

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85137129777&origin=inward

高炉スラグ混合セメント系防食塗料の防食特性に関する電気化学的検討査読有り

天野佳絵，森山美加子，池田幹友，日比野誠，貝沼重信

材料と環境 67 ( 8 ) 331 - 335 2018年08月

The Effect of Nitrite to Anode Reaction Property in Chloride-Induced Macro-Cell Corrosion 査読有り

Gaozai Xu, Makoto Hibino, Hiroki Goda, Zhonglu Cao

Journal of Computational and Theoretical Nanoscience 14 ( 9 ) 4241–4248, 2017 - 4248 2017年09月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

This research recorded the polarization process of chloride-induced macro-cell corrosion, and polarization ratios and slopes are utilized to reveal the macro-cell inhibiting mechanism by nitrite. The results indicate that the corrosion is mainly controlled by anode and the influence of cathode is tiny in the typical macro-cell corrosion of large cathode and small anode. With the increasing of nitrite concentration in anode, the macro-cell corrosion will be more controlled by anode and the macro-cell current density will be decreased to a lower level. Moreover, the existence of nitrite in anode under the circumstance of chloride-induced macro-cell corrosion can dramatically escalate the anode polarization slope which is the key determinant of the macro-cell corrosion current density decreasing. Additionally, with the increasing of nitrite concentration, the decreasing of macro-cell potential difference will not be appeared in the initial inhibiting period but can be appeared in later inhibiting period. Compared with decreasing of macro-dell potential difference, increasing of anode polarization slope is the main reason to decrease macro-cell corrosion current density.

DOI： 10.1166/jctn.2017.6726

その他リンク： http://www.ingentaconnect.com/content/asp/jctn/2017/00000014/00000009/art00013;jsessionid=82dqu9skc35kh.x-ic-live-02

Effect of anodic and cathodic chloride contents on the macrocell corrosion and polarization behavior of reinforcing steel 査読有り

Zhonglu, C., Haoyu, C., Lianyu, W., Makoto, H.

International Journal of Engineering Research in Africa 22 45 - 58 2016年02月

フライアッシュⅡ種を用いたジオポリマーの材料特性査読有り

合田寛基，原田耕司，津郷俊二，日比野誠

コンクリート工学年次論文集 37 ( 1 ) 1993 - 1998 2015年07月

Effect of Nitrite Inhibitor on the Macrocell Corrosion Behavior of Reinforcing Steel 査読有り

Zhonglu Cao, Makoto Hibino, and Hiroki Goda

Journal of Chemistry 2015 vol. 2015, Article ID 402182, 15 pages, 2015 2015年03月

Effect of Water-Cement Ratio on the Macro-cell Polarization Behavior of Reinforcing Steel 査読有り

Zhonglu Cao, Makoto Hibino, and Hiroki Goda

Journal of Engineering 2014 Vol. 2014, Article ID 925410, 11 pages. 2014年11月

ジオポリマーの高炉スラグの影響に関する基礎的研究査読有り

原田耕司，合田寛基，一宮一夫，日比野誠

コンクリート工学年次論文集 36 ( 1 ) 2236 - 2241 2014年07月

Effect of Steel Surface Conditions on the Macro-cell Polarization Behavior of Reinforcing Steel 査読有り

Zhonglu Cao, Makoto Hibino, Hiroki Goda

Proceedings of Architecture, Building Materials and Engineering Management IV ( 3 ) 1771 - 1779 IV, Part 3, pp.1771-1779. 2014年05月

Effect of Nitrite Ions on Steel Corrosion Induced by Chloride or Sulfate Ions 査読有り

Zhonglu Cao, Makoto Hibino, Hiroki Goda

International Journal of Corrosion 2013 Vol. 2013, Article ID 853730, 16 pages 2013年12月

Effect of Nitrite Ions on Polarization Behaviors of Steel Immersed in Simulated Concrete Pore Environments 査読有り

Zhonglu Cao, Makoto Hibino, Hiroki Goda

Proceedings of Frontiers of Green Building, Materials and Civil Engineering III III ( 2 ) 919 - 924 2013年08月

マクロセルを用いた電気化学的脱塩工法の防食効果の検討査読有り

本田和也,合田寛基,日比野誠

コンクリート工学年次論文集 31 ( 1 ) 1339 - 1344 2009年07月

曲げ戻しを受ける鉄筋の脆性破壊に対する感受性の検討査読有り

合田寛基,原田哲夫,日比野誠,永藤政敏

コンクリート工学年次論文集 31 ( 1 ) 1315 - 1320 2009年07月

Application of Digital Image Correlation Method to Hardening Shrinkage Behavior of Resin Concrete 査読有り

Kazushi MATSUO,Makoto HIBINO,Hiroki GODA

コンクリート構造物の補修，補強，アップグレード論文報告集 8 161 - 166 2008年10月

レジンコンクリートの硬化収縮のモデル化査読有り

松尾一四,日比野誠

コンクリート工学年次論文集 28 ( 1 ) 1535 - 1540 2006年07月

養生条件が膨張モルタルの圧縮強度と膨張特性に及ぼす影響査読有り

合田寛基,日比野誠

コンクリート工学年次論文集 28 ( 1 ) 467 - 472 2006年07月

　前のページ- 次のページ　

<日比野 誠>

論文 - 日比野 誠

<日比野　誠>

論文 - 日比野　誠