[55] If an excessive amount of air becomes trapped in the concrete on account of the mixing approach, defoamers may be used to stimulate the air bubble to agglomerate, increase on the surface area from the wet concrete after which disperse.Encyclopaedia Britannica's editors oversee subject matter regions wherein they may have considerable awareness

A major ingredient of concrete is cement, a high-quality powder employed mainly to bind sand and coarser aggregates together in concrete. While many different cement styles exist, the most common is "Portland cement", which happens to be made by mixing clinker with smaller quantities of other additives such as gypsum and ground limestone.Concrete a

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