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Drilling holes for injection ports.
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Notice wet floor, water is running out of crack just below the drill. |
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Holes |
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Holes for ports are drilled every third brick impression. |
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H2o |
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Water seeks the lowest level but the crack must be filled to the top of the wall. |
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Removing dust |
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Holes are drilled out and flushed with water to remove drilling dust. |
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Fittings |
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Close-up of the injection fittings. These are one-way valves with an expandable rubber collar |
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Injection |
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Tim is starting the injection process. |
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Material |
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The low viscosity liquid urethane is being injected. The material is leaking out of the crack prior to reacting. |
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Reaction |
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The urethane is reacting with the water and foaming. The flow of water has now stopped. |
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More. |
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The injection process continues. |
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Almost done. |
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The crack is now filled. |
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Cleaning up. |
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The foam hardens in several minutes and can be cleaned off. |
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Ports. |
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The injection ports have been broken off and can be patched. |
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A smooth faced painted wall. |
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The injection ports are installed. |
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Progress. |
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Injection in process. |
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Hole in floor |
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Here is a novel way to fix a leaky wall. Two holes are drilled in the floor and the floor chipped out to direct the water. |
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Hole in floor 2 |
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Another view. The hole in the wall to drain the water is to the left of the injection port. |
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Hole in wall |
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The hole in the wall is visible in this view. |
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Hole in wall patched. |
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The hole is filled with urethane. After the crack was filled, the holes in the wall and floor are covered with a concrete patch. |
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Epoxy surface patch |
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This crack was routed out and patched with an epoxy paste. At some later date, probably when the crack started leaking again, the lower part was covered over with a flexible urethane caulk. This leaked again. |
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Surface patch 2 |
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The hard epoxy patch cracks over time. The foam is leaking from these cracks and will seal them from further leaking. |
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Epoxy patch |
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When this wall was repaired the crack was routed out and filled with an epoxy paste. This is a very time consuming job and not very effective. Note the water visible on the lower portion of the crack. |
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