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Concrete Shed Roof Leak #2

There is a slight leak in the roof of my concrete Shed. The photos show the inside and roof of the shed. The pipes in the photos are seemingly there for soil drainage. Normaly there's no water coming out of them. Until last week my neighbours had a burst pipe which was causing the roof to pool with water and run down in streams. The water was a constant trickle down the inside walls of the shed. Can something be injected into the gap to stop the water flow? Is there a more permanent solution?