2012 Fiscal Year Final Research Report
Fundamental Study on Production and Construction Technology of Concrete Considering Material Segregation Resistance
| Project/Area Number |
22360228
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Building structures/materials
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| Research Institution | Yamaguchi University |
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Principal Investigator |
RI Zhuguo 山口大学, 大学院・理工学研究科, 准教授 (50432737)
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| Co-Investigator(Kenkyū-buntansha) |
TANIGAWA Yasuo 名城大学, 理工学部, 教授(2010 年) (70023182)
MATSUO Eiji 山口大学, 大学院・理工学研究科, 助教(2010-2011 年) (10284267)
MATSUO Eiji 九州産業大学, 工学部都市基盤デザイン工学科, 准教授(2012 年) (10284267)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 材料分離 / 評価試験法 / 分離限界 / 分離程度予測 / 性能不均一性 / 分離モデル |
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| Research Abstract |
As a fundamental research for realizing rational design, production, and construction of concrete, in this study we proposed a non-destructive and integrated segregation resistance test method of fresh concrete, an estimating method of segregation degree of concrete placed by vibration, and the methods for estimating non-uniformities of compressive strength and Young’s modulus of segregated concrete. Mechanical Properties, shrinkage, and durability of concretes with different segregation degrees were investigated, and the segregation limit was proposed following by discussing quantitatively the relationships between the segregation degree and the properties or their coefficients of variation. Also, on basis of considering fresh concrete to be a particle assembly with water, elapsed time-dependent bleeding and settlement of coarse aggregate of fresh concrete in standstill state were modeled by theoretical approaches.
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