| 摘要 |
A mechanical packer (10) for injecting repair compound into a damaged concrete structure (13) comprises a rigid insertion portion (20) having distal (24) and proximal ends (26). A feed stem (22) that can be broken off is attached to the proximal end (26) of the insertion portion (20). A passageway (40) allows the repair compound to pass through the packer and into the damaged structure. The packer (10) further includes a check valve (42) positioned in the passageway (40) that allows the repair compound to remain under pressure in the damaged structure, until it cures, even after the feed stem has been broken off.
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