INJECTION METHOD FOR PC GROUT

PROBLEM TO BE SOLVED: To provide an injection method for PC grout, which eliminates any residual void in a sheath, while accurately understanding an injection state of the grout. SOLUTION: In the sheath 2, a tense portion 4 is formed on one end, an anchorage zone 5 on the other end, and a lower bent...

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Hauptverfasser: OHI KUNIO, HONMA JUNJI
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide an injection method for PC grout, which eliminates any residual void in a sheath, while accurately understanding an injection state of the grout. SOLUTION: In the sheath 2, a tense portion 4 is formed on one end, an anchorage zone 5 on the other end, and a lower bent portion 6/upper bent portion 7 therebetween. A grout-injection hose 8 is connected to both the lower bent portion 6 and the anchorage zone 5, a camera-insertion opening 9 combing with an exhaust port is made on the upper bent portion 7, and a grout-checking hose 10 is connected to the tense portion 4 side. The Grout is made spontaneously flow down from the top of the grout-injection hose 8 connected with the lower bent portion 6 and fill up inside the sheath 2 from downward, then injection is stopped before exceeding the upper bent portion 7. While the state of filling at this time is checked by the camera being pulled up gradually, the injection work is performed. Then, the grout is injected through the grout-injection hose 8 connected with the anchorage zone 5. COPYRIGHT: (C)2011,JPO&INPIT