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Re: Work of Love and Passion... Miami FL
You have a significant cantilever to your design which is a weak point. You need to leave your forms on and keep them moist for the entire 7 days and if it were me I would keep the supports under your slab in place for 2 weeks before pulling them. You should be able to begin putting down your insulation layer, oven floor and build your dome forms while it is curing as that will not be causing any issues with the slab. Just be careful not to put any extra load on the cantilever portion and do not drag anything across the top surface for at least 72 hours.
Read the following and remember by flat work they mean fully supported like a floor on the ground.
Formed concrete. The best way to cure formed concrete walls is to leave the forms in place as long as practical - a minimum of three days is best. The formwork holds in moisture and, in cold weather, heat. In hot weather, keep the forms hosed down to control temperature and reduce moisture evaporation from the concrete. Any exposed concrete, such as the top of a concrete wall, should be covered with plastic or sprayed with curing compound. If the forms are stripped earlier than three days, the concrete should be either covered with plastic for several days or sprayed with curing compound. There are some obvious practical considerations here. The idea is to allow the concrete to cure for a reasonable length of time, yet not delay the rest of the job.
How Long to Cure? The answer to this question is the longer the better. Concrete will continue to hydrate and gain strength almost indefinitely as long as moisture is present and a suitable temperature is maintained. Try drilling or jackhammering 30-year-old concrete and you'll see what I mean. If concrete is cured in cool temperatures (32?F to 50?F), strength gain will be slow but the concrete will eventually reach a high strength as long as moisture is continuously present. However, concrete should not be allowed to get hotter than 90?F or to dry out during the curing period. If the concrete dries out too early in the hydration process (within the first three days), long-term strength will be compromised even if moist conditions return. If your intention is to produce the highest quality concrete, keep freshly poured concrete moist at 50?F to 90?F for seven days for Types I or II portland cement ("regular" concrete) or for three days if Type III cement (highearly, or rapid-hardening) or accelerators are used.
You have a significant cantilever to your design which is a weak point. You need to leave your forms on and keep them moist for the entire 7 days and if it were me I would keep the supports under your slab in place for 2 weeks before pulling them. You should be able to begin putting down your insulation layer, oven floor and build your dome forms while it is curing as that will not be causing any issues with the slab. Just be careful not to put any extra load on the cantilever portion and do not drag anything across the top surface for at least 72 hours.
Read the following and remember by flat work they mean fully supported like a floor on the ground.
Formed concrete. The best way to cure formed concrete walls is to leave the forms in place as long as practical - a minimum of three days is best. The formwork holds in moisture and, in cold weather, heat. In hot weather, keep the forms hosed down to control temperature and reduce moisture evaporation from the concrete. Any exposed concrete, such as the top of a concrete wall, should be covered with plastic or sprayed with curing compound. If the forms are stripped earlier than three days, the concrete should be either covered with plastic for several days or sprayed with curing compound. There are some obvious practical considerations here. The idea is to allow the concrete to cure for a reasonable length of time, yet not delay the rest of the job.
How Long to Cure? The answer to this question is the longer the better. Concrete will continue to hydrate and gain strength almost indefinitely as long as moisture is present and a suitable temperature is maintained. Try drilling or jackhammering 30-year-old concrete and you'll see what I mean. If concrete is cured in cool temperatures (32?F to 50?F), strength gain will be slow but the concrete will eventually reach a high strength as long as moisture is continuously present. However, concrete should not be allowed to get hotter than 90?F or to dry out during the curing period. If the concrete dries out too early in the hydration process (within the first three days), long-term strength will be compromised even if moist conditions return. If your intention is to produce the highest quality concrete, keep freshly poured concrete moist at 50?F to 90?F for seven days for Types I or II portland cement ("regular" concrete) or for three days if Type III cement (highearly, or rapid-hardening) or accelerators are used.
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