| 摘要 |
PROBLEM TO BE SOLVED: To enable work, in which a filling layer is provided in a clearance part formed between an outer peripheral surface of a protruding portion of roadbed concrete and an inner peripheral surface of a recess of a track concrete slab, to be performed with proper workability in construction of a slab type track.SOLUTION: An X-shaped core body 48 is provided on an outer peripheral surface part 42F of a bag body 42 of a sealed structure using a nonwoven fabric sewn to constitute a sealed chamber 41 assuming almost the same shape as a space shape of a clearance part 15 and having a filler filling port 45 communicating with the sealed chamber 41.SELECTED DRAWING: Figure 2 |
