Study on practical system for production and construction of high-performance concrete with help of visualization technique of fresh concrete

新拌混凝土可视化技术的高性能混凝土生产施工实用系统研究

• 批准号: 17360205
• 负责人: HASHIMOTO Chikanori
• 金额: $ 9.97万
• 依托单位: The University of Tokushima
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360205/
• 关键词: Concrete mixer; Visualization technique; Shear flow; Recycled aggregate concrete; High strength concrete; High performance concrete; Pressure fluctuation; Angle of the blade installed to axis; 2軸強制練りミキサ; 可視化実験; フレッシュコンクリート; 再生コンクリート; 練混ぜ性能; ブ

A purpose of this study is to develop the practical system for production and construction such as concrete mixer, concrete agitator and concrete punping machine in order to spread the use of high performance concrete such as high strength concrete, high durable concrete or high-fluidity concrete. After carrying on the investigation, we decided to develop the high performance mixer for manufacturing high strength concrete having more than 100N/mm2 of compressive strength, high durable concrete having more than 200 years of life time or high-fluidity concrete with the self-compacting ability of Rank 1. The bi-axial forced-mixing type of kinds of the mixer is high and the mixing efficiency is the highest. The flow patterns of the bi-axial forced-mixing type mixer are divided into two: the locally crossing flow and the globally circulating flow. We have developed and proposed a visualization technique that makes it possible to measure the degree of mixing with lapse time. At first a model … More concrete was assumed to be a viscous model of one phase system for the model mixer of two types with different area of the locally crossing flow, the mixing efficiency curve of the model concrete of the high viscosity and the low viscosity was a process of becoming uniform with the axial rotation, and quantification was attempted. Secondly we tried the quantification of the crossing flow around the blade generated when two circulating flows crossed by the pressure fluctuation of the pressure sensor installed in the surface of the blade of the mixer was attempted, and the size of the crossing flow generated in the model mixer of two types and the correlation of the mixing efficiency curve were considered. Thirdly we developed the new bi-axial forced-mixing typemixer with oscillation of mixture and mix proportion design based on mix proportion of high strength concrete are carried out to investigate the possibility for increasing properties and durability of concrete incorporating low quality recycled aggregate. As the results of this study, the mixing method with oscillation of mixture has effect on the concrete using low quality recycled aggregate to increase about 20% of compressive strength. Less

本研究的目的是开发混凝土搅拌机、混凝土搅拌机和混凝土泵送机等生产和施工实用系统，以推广高性能混凝土，如高强混凝土、高耐久性混凝土或高流动性混凝土的使用。在进行调查后，我们决定开发高性能搅拌机，用于制造抗压强度超过100 N/mm 2的高强度混凝土，使用寿命超过200年的高耐久性混凝土或自密实能力为1级的高流动性混凝土。双轴强制混合式是目前各种混合机中混合效率最高的一种。双轴强制混合式混合器的流动形态分为局部交叉流动和整体循环流动两种。我们已经开发并提出了一种可视化技术，使其能够测量的混合度与流逝时间。一开始是模特 ...更多信息 对于局部交叉流面积不同的两种模型搅拌机，将混凝土假定为单相体系的粘性模型，高粘度和低粘度模型混凝土的搅拌效率曲线是随轴向旋转而趋于均匀的过程，并尝试定量化。其次，我们尝试量化当两个循环流通过安装在混合器的叶片表面的压力传感器的压力波动时产生的叶片周围的交叉流，并考虑在两种类型的模型混合器中产生的交叉流的大小和混合效率曲线的相关性。第三，研制了新型双轴振动强制搅拌混合机，并根据高强混凝土配合比进行了配合比设计，探讨了掺低质量再生骨料提高混凝土性能和耐久性的可能性。本研究结果显示，振拌法对低品质再生骨料混凝土的抗压强度有提高20%左右的效果。少

项目成果

可視化モデルを用いた2軸強制練りミキサの局部交錯流動のせん断流の定量

使用可视化模型量化两轴强制混合搅拌机中局部相交流的剪切流

• 发表时间: 2007
• 期刊: コンクリート工学年次論文集 Vol.29・No.2
• 作者: Matsumoto Y.;Yamaguchi H.;Tomida N.;Kato T. and Khakimov A.;小野寺 誠司;橋本 親典;Nhar Heng;Seiji Onodera;Chikanori Hashimoto;Nhar Heng;小野寺 誠司;橋本 親典
• 通讯作者: 橋本 親典

圧力変動に基づく2軸強制練りミキサの練混ぜの定量的評価

基于压力波动的两轴强制搅拌混合机的混合定量评价

• 发表时间: 2008
• 作者: Matsumoto Y.;Yamaguchi H.;Tomida N.;Kato T. and Khakimov A.;小野寺 誠司;橋本 親典;Nhar Heng;Seiji Onodera;Chikanori Hashimoto;Nhar Heng;小野寺 誠司;橋本 親典;Nhar Heng;芝崎 圭佑;Sayaka Nishibata;渡辺 健;西畑 清華;小野寺 誠司;Sayaka Nishibata;Takeshi Aatanabe;Sayaka Nishibata;Seiji Onodera;Sayaka Nishibata;渡邉 健;西畑 精華;小野寺 誠司;西山 信也;吉田 元昭
• 通讯作者: 吉田 元昭

可視化モデルを用いた2軸強制練りミキサの局部交錯流動のせん断流の定量化

使用可视化模型量化两轴强制混合搅拌机中局部相交流的剪切流

• 发表时间: 2007
• 期刊: コンクリート工学年次論文集 Vol. 28・No. 2
• 作者: Matsumoto Y.;Yamaguchi H.;Tomida N.;Kato T. and Khakimov A.;小野寺 誠司;橋本 親典
• 通讯作者: 橋本 親典

振動付与練混ぜにより製造した再生骨材コンクリートのAE法による品質評価

AE法评价振动搅拌再生骨料混凝土的质量

• 发表时间: 2006
• 期刊: 材料 Vol. 55・No. 10
• 作者: Matsumoto Y.;Yamaguchi H.;Tomida N.;Kato T. and Khakimov A.;小野寺 誠司;橋本 親典;Nhar Heng;Seiji Onodera;Chikanori Hashimoto;Nhar Heng;小野寺 誠司;橋本 親典;Nhar Heng;芝崎 圭佑;Sayaka Nishibata;渡辺 健
• 通讯作者: 渡辺 健

Durability of Low Quality of Recycled Aggregate Concretes Subjected to Freezing and Thawing Resistance

低质量再生骨料混凝土的抗冻融耐久性

• 发表时间: 2007
• 期刊: Proceedings of the MDCMS 1 -Vietnam International Conference Vol. 1・No. 1
• 作者: Matsumoto Y.;Yamaguchi H.;Tomida N.;Kato T. and Khakimov A.;小野寺 誠司;橋本 親典;Nhar Heng
• 通讯作者: Nhar Heng