Just under two weeks ago, builders poured a concrete slab for a large shed alongside my house - approximate dimensions 30' long, 13' wide at one end narrowing to 10' wide at the other. The ground was prepared with shuttering and around a 3" layer of loose gravel before the concrete was poured on top - around a 3" thickness. Sorry this is all so vague, I wasn't actually around when all this happened!
Anyway, the concrete was poured in the morning, and in the afternoon it rained - a lot, so my wife tells me. The concrete was not covered. Four days later the shed was constructed on top of the slab. Obviously there was a lot of moisture coming out of the slab, so I've been trying to keep the floor clear, and leaving the doors open every day to allow it to dry. The problem is, the top surface is very soft; wearing trainers, pivoting on the ball of one foot will result in loose sand. Sweeping the floor with a stiff yard brush pulls yet more sand loose.
Will the floor stabilise, given time - and if so, how much time? Anything I can do to help it? All advice gratefully received - unless it's to start again, which would be rather inconvenient at this point!
Many thanks,
Martin
Anyway, the concrete was poured in the morning, and in the afternoon it rained - a lot, so my wife tells me. The concrete was not covered. Four days later the shed was constructed on top of the slab. Obviously there was a lot of moisture coming out of the slab, so I've been trying to keep the floor clear, and leaving the doors open every day to allow it to dry. The problem is, the top surface is very soft; wearing trainers, pivoting on the ball of one foot will result in loose sand. Sweeping the floor with a stiff yard brush pulls yet more sand loose.
Will the floor stabilise, given time - and if so, how much time? Anything I can do to help it? All advice gratefully received - unless it's to start again, which would be rather inconvenient at this point!
Many thanks,
Martin
