| Project/Area Number |
14350232
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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 |
土木材料・力学一般
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| Research Institution | TOKYO INSTITUTE OF TECHNOLOGY |
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Principal Investigator |
OTSUKI Nobuaki TOKYO INSTITUTE OF TECHNOLOGY, GRAD.SCHOOL OF SCI.AND ENG, PROF., 大学院・理工学研究科, 教授 (40211106)
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| Co-Investigator(Kenkyū-buntansha) |
KONO Katsuya TOKYO INSTITUTE OF TECHNOLOGY, Grad School of SCI.and ENG, RES.ASSO., 大学院・理工学研究科, 助手 (40361779)
NISHIDA Takahiro TOKYO INSTITUTE OF TECHNOLOGY, Grad School of SCI.and ENG, RES.ASSO., 大学院・理工学研究科, 助手 (10345358)
NIWA Jyunichiro TOKYO INSTITUTE OF TECHNOLOGY, Grad.School of SCI.and ENG, PROF., 大学院・理工学研究科, 教授 (60164638)
MIYAZATO Shinichi KANAZAWA INSTITUTE OF TECH., DEPT.OF CIVIL ENG., LECTURER, 土木工学科, 講師 (60302949)
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| Project Period (FY) |
2002 – 2003
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| Keywords | MINUTE REGION IN CONCRETE / ITZ / CONCRETE SKIN / EVALUATION METHOD / MINUTE COMPRESSIVE / MINUTE TENSILE / MINUTE FLEXURAL / MINUTE DIFFUSIVITY |
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| Research Abstract |
1)THE FOLLOWING QUANTITATIVE EVALUATION METHODS FOR STRENGTH AND MATERIALS PERMEABILITY OF MINUTE REGIONS IN CONCRETE COULD BE DEVELOPED IN THIS RESEARCH.
A)MINUTE COMPRESSIVE TEST
B)MINUTE TENSILE TEST
C)MINUTE DIFFUSION TEST
2)IT WAS QUANTITATIVELY CONFIRMED THAT THE STRENGTH AND MATERIALS PERMEABILITY OF AGGREGATE GAVE LARGE INFLUENCE ON THAT OF CONCRETE. MOREOVER THE EFFECTIVE METHOD TO USE THE LOW QUALITY AGGREGATES COULD BE PROPOSED.
3)IT WAS QUANTITATIVELY CONFIRMED THAT THE UPPER PART OF CONCRETE WAS EASILY INFLUENCED BY BLEEDING AND THE QUALITY OF STRENGTH AND MATERIALS PERMEABILITY OF UPPER PART CONCRETE BECAME LOW. MOREOVER THE CORROSION FORMATION OF STEEL BAR EMBEDDED IN CONCRETE AFFECTED BY BLEEDING TENDED TO MACROCELL CORROSION DEW TO THE ABOVE EFFECT.
4)IT WAS QUANTITATIVELY CONFIRMED THAT THE STRENGTH OF ITZ AT LOWER PART OF AGGREGATE WAS LOWER THAN THAT OF UPPER PART OF AGGREGATE DEW TO THE BLEEDING WATER.
5)IT WAS QUANTITATIVELY CONFIRMED THAT THE CHLORIDE ION DIFFUSIVITY OF MINUTE REGION IN CONCRETE BECAME LARGE WITH TEMPERATURE RISING. MOREOVER THE ABOVE TENDENCY FOLLOWS ARRHENIUS EQUATION.
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