Experimental Study on Development of Unified Consistency Test system for Fresh Concrete

新拌混凝土统一稠度测试系统开发试验研究

• 批准号: 10555149
• 负责人: HASHIMOTO Chikanori
• 金额: $ 2.82万
• 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: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10555149/
• 关键词: Performance-base construction design; Consistency; Fresh concrete; Acceleration; Flow Rate; Table vibrator; Slump; Flow Visualization Technique; 性能照査型施行設計; フレッシュコンクリート; 締固め; テーブルバイブレータ; 揺動式締固め方法; 洗い分析試験; 材料分離

The aim of this paper is to develop the new testing method for measuring the consistency of fresh concrete, which is named the new consistency test method shortly, in order to obtain the useful information on the performance-base construction design. In the new consistency test method, the fresh concrete is placed on the table vibrator using actuator to simulate the fresh concrete placing in the form on the actual construction site. Owing to an actuator, this table can be oscillated in vertical direction by varied frequency and amplitude. The indices taking by the new consistency test method are the flow rate and the acceleration. The flow rate is related to the index of the performance on construction time and the acceleration is related to the index of the performance on construction method. A total of 91 fresh concretes having 29 types mix proportions with various slump from 0.0 cm to 25.0 cm and 7 types mix proportions with various slump flow from 400 cm to 695 cm were tested. And I t was obtained that a total of 91 relationships between the flow rate and the acceleration.As a result of this experimental study, It was found out that the performance on construction of fresh concrete having the large range of the consistency from the slump of 0 cm to the slump flow of 655 cm could be estimated uniformly using the relationship the flow rate and the acceleration taking by the new consistency test method.

本文的目的是开发测量新拌混凝土稠度的新测试方法，简称新稠度测试方法，以获得基于性能的施工设计的有用信息。在新的稠度测试方法中，使用执行器将新拌混凝土放置在台式振动器上，以模拟实际施工现场模板中的新拌混凝土浇筑。由于有致动器，该工作台可以在垂直方向上以不同的频率和幅度振荡。新的一致性检验方法采用的指标是流量和加速度。流量与施工时间性能指标相关，加速度与施工方法性能指标相关。测试了总共 91 种新拌混凝土，其具有 29 种配合比，坍落度从 0.0 cm 到 25.0 cm，以及 7 种配合比，坍落度从 400 cm 到 695 cm。共得到了流量与加速度之间的91个关系。通过本次试验研究的结果，发现新拌混凝土的施工性能与坍落度的稠度范围较大。通过新的一致性试验方法，可以利用流量与加速度的关系来统一估算0 cm至655 cm的坍落度流动。

项目成果

Satoru Yamaguchi, Chikanori Hashimoto, Hiroyuki Mizuguchi and Nobuhiro Takashima: "Analytical Study on the Fresh Concrete flowing near by reinforcement"Submitted for the publication on Proceedings of the Japan Concrete Institute. 22. (2000)

Satoru Yamaguchi、Chikanori Hashimoto、Hiroyuki Mizuguchi 和 Nobuhiro Takashima：“对钢筋附近流动的新混凝土的分析研究”提交给日本混凝土学会会议录上的出版。

橋本親典、吉岡靖司、水口裕之: "充てん装置の鉄筋間を流動するコンクリートの流動性状の可視化"可視化情報(CD-ROM論文集). Vol.18,Suppl.,No.2. 332-336 (1998)

Chikanori Hashimoto、Yasushi Yoshioka、Hiroyuki Mizuguchi：“填充装置中钢筋之间流动的混凝土流动特性的可视化”可视化信息（CD-ROM 集）第 18 卷，增刊第 332-336 号（ 1998）

Shinji URANO,Chikanori HASHIMOTO and Yukikazn TSUJI: "Evaluation of Flow of Self-Compacting Concrete by Visualization Technique"Proceedings of the First International RILEM Symposium. 25-34 (1999)

Shinji URANO、Chikanori HASHIMOTO 和 Yukikazn TSUJI：“通过可视化技术评估自密实混凝土的流动性”第一届国际 RILEM 研讨会论文集。

Shinji Urano, Chikanori Hashimoto, Yukikazu Tsuji and Takafunmi Suguyama: "Visualization of Placing of Concrete for Diaphragm Wall"Journal of Materials, Concrete Structure and Pavements, JSCE. No. 599/V-40. 131-141 (1998)

Shinji Urano、Chikanori Hashimoto、Yukikazu Tsuji 和 Takafunmi Suguyama：“连续墙混凝土浇筑的可视化”材料、混凝土结构和路面杂志，JSCE。

Chikanori Hashimoto, Seiji Yoshioka and Hiroyuki Mizuguchi: "Visualization for Concrete Flowing through Steel Bars in Filling Test"Journal of the Visualization Society of Japan. Vol. 18, Suppl. No. 2. 332-336 (1998)

Chikanori Hashimoto、Seiji Yoshioka 和 Hiroyuki Mizuguchi：“填充试验中混凝土流过钢筋的可视化”日本可视化学会杂志。