2002 Fiscal Year Final Research Report Summary
Assessment on performance and mix proportion design method for high performance PC grout
| Project/Area Number |
13650513
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | KANTO GAKUIN UNIVERSITY |
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Principal Investigator |
IZUMO Junichi Kanto Gakuin Univ. Faculty of Eng. Prof., 工学部, 教授 (50183166)
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| Project Period (FY) |
2001 – 2002
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| Keywords | PC grout / filling performance / fluidity / angle at tip part / management of injection / yield stress / plastic viscosity |
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| Research Abstract |
The following results are obtained through this study.
(1) Development of the new test setup for the filling performance of PC grout
The new experimental device that can visibly evaluate the filling performance of grout has been developed. It is clarified that filling performance of the various types of grouts can be evaluated by the experimental device.
(2) Study on required conditions for the filling performance of PC grout
The filling performance of PC grout can be evaluated with the angle at the tip part of grout in flow. And the good filling condition has been confirmed through the test when the angle at the tip part of grout is almost greater than 20 degrees.
(3) Formulation of the angle at the tip part of grout and Verification
The inclination of fluid grout can be formulated by taking grout properties, velocity of grout, and a diameter and an inclination of a duct into consideration. It is also confirmed that the calculated angles at the tip part of grout are in good correspondence with the observed ones.
(4) Effects of prestressing steel on grout filling performance
Effects of prestressing steel on grout filling performance has been clarified through the tests
(5) Proposal of the grout application method
It is demonstrated that the above mentioned results are applied to the actual grouting program, if the appropriate viscosity and the velocity of grout are determined according to the diameter and the placement of the duct.
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