Ecocentric = an adjective used to describe a state of mind; of a person, or a social group, who is, or are: Committed to Making a Positive Contribution to The Survival of Mankind And The Eco-System Which Supports Us.
Effects. When fast-setting concrete mix is used, setting takes place in 20 to 40 minutes. Typically, you can apply some weight to the posts after 4 hours, but it's a good idea to wait at least 24 hours before resuming fence construction.
Concrete will continue to set and settle for anywhere up to 20 years. In warm weather, a concrete slab can be walked upon the afternoon of a morning pour. A builder will typically allow 2-3 days before applying any loads, but will keep back propping in for a few weeks to prevent collapse. It is designed to reach it's designated strength 28 after pouring. i.e. 32MPa concrete should reach 32MPa 28 days after pouring.