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.

本文的研究目的是开发新拌混凝土稠度测试方法，简称新拌混凝土稠度测试方法，为基于性能的施工设计提供有用的信息。新的稠度试验方法是将新拌混凝土置于振动台上，模拟实际施工现场新拌混凝土在模板中的浇筑过程。由于有一个驱动器，该工作台可以在垂直方向上以不同的频率和幅度摆动。新的一致性试验方法取的指标是流量和加速度。流速与施工时间性能指标有关，加速度与施工方法性能指标有关。共91个新拌混凝土进行了试验，有29种配合比，不同的坍落度从0.0 cm到25.0 cm，7种配合比，不同的坍落度流动度从400 cm到695 cm。得到了91个流量与加速度的关系式，结果表明，新稠度试验所取的流动速率与加速度的关系，可以统一地评价坍落度0 cm ~ 655 cm稠度范围较大的新拌混凝土的施工性能法

项目成果

浦野真次、橋本親典、杉山隆文: "地下連続壁のコンクリートの充填状況に関する可視化モデル実験"土木学会論文集. No.599,V-40. 131-141 (1998)

Shinji Urano、Chikanori Hashimoto、Takafumi Sugiyama：“地下连续墙混凝土填充状态的可视化模型实验”日本土木工程学会第 599 号，V-40（1998 年）。

Shinji URANO,Chikanori HASHIMOTO and Yukikazn TSUJI: "Fundamental Study of Mixing Mechanism of Concrete in a Continuous Mixer by Visualization Technique"Concrete Library of JSCE,. No.32. 85-97 (1998)

Shinji URANO、Chikanori HASHIMOTO 和 Yukikazn Tsuji：“利用可视化技术对连续搅拌机中混凝土的搅拌机理进行基础研究”JSCE 混凝土图书馆，。

西山隆之、橋本親典、吉岡靖司、浦野真次: "充てん試験装置の形状が高流動コンクリートの自己充てん性能に与える影響"コンクリート工学年次論文報告集. Vol.21・No.2. 475-480 (1999)

Takayuki Nishiyama、Chikanori Hashimoto、Yasushi Yoshioka、Shinji Urano：“填充试验装置的形状对高流动性混凝土自填充性能的影响”《混凝土工程年报》第 21 卷·第 2 期。 (1999)

Takashi Ikari, Hiroyuki Mizuguchi, Chikanori Hashimoto and Takao Ueda: "A Segregation Resisting Model for Self-Compacting Concrete in Pipe Line"Cement Sciend and Concrete techonology. 52. 552-557 (1998)

Takashi Ikari、Hiroyuki Mizuguchi、Chikanori Hashimoto 和 Takao Ueda：“管道自密实混凝土的抗离析模型”水泥科学和混凝土技术。

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）