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Development of General Flowing Estimation System for Fresh Concrete

新拌混凝土通用流动估算系统的开发

基本信息

批准号：
11555115
负责人：
TSUJI Yukikazu
金额：
$ 6.98万
依托单位：
Gunma University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B).
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11555115/
关键词：
Fresh Concrete Self-Compacting Concrete Grout Mortar Grout for Prestressed Concrete Flowing Estimation Test Flowing Test Apparatus Calibration Method Standard Sand キャリブレーション

项目摘要

Calibration method for funnel type flowing test apparatus is established after carrying out selection of standard material for calibration as standard sand produced at Toyoura in Yamaguchi Prefecture. Funnel type flowing test apparatus consists of not only O type, V type and S type for self-compacting concrete, but also JP type, J_<14> type and JA type for grout of prestressed concrete. Research results are as follows.1)Calibration data were obtained after carrying out O type, V type, JP type, J_<14> type and JA type funnel testing apparatus. Variations due to production of testing apparatus, selection lot of standard sand produced at Toyoura, and types of funnel flowing apparatus were obtained.2)Three types of self-compacting concrete were produced to measuring flowing time by the use of O type, V type and S type funnel flowing apparatus. Flowing time were measured by the use of J_<14> type, JP type and K type funnel flowing apparatus for flowing mortars which were produced from self-compacting concrete by excluded coarse aggregates. Three types of self-compacting concrete consisted of powder type, viscosity agent type and combined type.3)Standard sand produced at Toyoura is best selected after caring out calibration selection tests using combined finer particle type fly ash and water soluble monomer.4)Flowing behavior of materials in funnel type flowing test apparatus was clarified after analyzing macro type and micro type flow behavior and carrying out visualization technique.5)Calibration methods were proposed for funnel type flowing test apparatus.

通过选择山口县丰浦生产的标准砂作为校准用标准物质，建立了漏斗型流动试验装置的校准方法。漏斗式流动性试验仪既有用于自密实混凝土的O型、V型、S型，也有用于预应力混凝土浆液的JP型、J<14>型、JA型。研究结果如下：1）对O型、V型、JP型、J_<14>型和JA型漏斗试验装置进行了标定，获得了标定数据。2）采用O型、V型和S型漏斗流动仪制作了3种自密实混凝土流动时间测定装置。用J型<14>、JP型和K型漏斗流动仪测定了用排除粗骨料的自密实混凝土配制的流动砂浆的流动时间。三种自密实混凝土由粉末型，3）采用细颗粒型粉煤灰和水溶性单体的组合进行标定筛选试验，优选出丰浦标准砂; 4）通过宏观型和微观型流动行为分析，并采用可视化技术，明确了漏斗型流动试验装置中材料的流动行为;提出了漏斗式流动试验装置的标定方法。