Yes, we want to build health-consciously and frankly, it surprises me that this is met with so much ridicule here.
Not ridicule, but amazement. Concrete is brewed according to the German purity law from cement, gravel, and water – raspberry flavor is not provided for, so your question can only cause astonishment without further explanation. Of course – not in the sense of organic, but in the sense of inevitable – concrete should harden in time, that is, not before the formwork, but after pouring without delay. It is no magic that this works at different temperatures. What you are looking for should be found in beton.Wiki under keywords such as "Betonzusatzstoffe" or "Betonzusatzmittel." Basically, concrete is an inedible, hard bread – i.e., ingredients make a dough, the dough hardens in the mold, and the less scrupulous baker adds more magic stuff than the organic baker. Your question is therefore quite
legitimate, but without clarifying the background it was not
understandable either. So don't be angry, just remember next time that we can’t look inside your head.