Static structures (e.g. – buildings) – Processes – Requiring soil work
Patent
1986-09-15
1988-07-05
Murtagh, John E.
Static structures (e.g., buildings)
Processes
Requiring soil work
523093, 523094, 52514, E04G 2302
Patent
active
047545909
ABSTRACT:
A rod hole plugging system for providing an effective permanent plug within a tie rod hole extending through the thickness of a poured cement wall utilizes a short, low cost plug selected from natural fibre or synthetic foam, which is soaked by a liquid resin coating which is seasonally selectible to meet environmental conditions. The selected plug has a diameter exceeding that of the rod hole to be plugged. The selected group of resins is water-tolerating and impermeable, and may be a high solids polyisocyanate prepolymer that will harden to a polyurethane polymer; or it may be a selected mixture of epoxy resin and hardener. The plug is soaked in the resin, and is then diametrically compressed and inserted within the interior (i.e., inside the foundation of the structure) end of the rod hole being treated. The elastic memory of the plug material causes it to swell and engage the walls of the rod hole, in which condition the liquid resin sets up. A low cost, substantially waterproof, permanent plug for the rod hole is thereby established.
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Hewson Donald E.
Murtagh John E.
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