| 摘要 |
<p>A pile head dresser for cast-in-place concrete piles has an inner cylinder 2 arranged for allowing a tremie pipe 16 to move in and out, and surrounded at a distance by an outer cylinder 3, and a top plate 1 and a bottom plate 6 joining the two cylinders 2 and 3 at top and bottom respectively to form a double cylinder structure A, the bottom plate 6 having a plurality of reinforcement bar apertures 8 provided therein at equal intervals of a distance, and the top and bottom plates 1, 6 having exhaust apertures 5 and 9 respectively provided therein for passing a mixture of air and slurry. <IMAGE></p> |
