| 摘要 |
This invention pertains to the building and construction industry, particularly to the mixtures of concrete and constructions made from them. It belongs especially to the methods of producing self-carried architectural formations. The goal of the invention is to arise quality grade of self-carried architectural formations by improving surface-smoothness as well as by improving hardness and cold-resistance. The mixtures of concrete contain binder (Portland's cement actually) 25 to 28% in weight, water 3 to 4% in weight and the residues of mixture are leaning additions. That could be super-quality grit or quartz-sand having grain-dimensions of 0 to 2 mm as well as filtered water. The leaning additions can contain polymeric additives and dyestuffs having particular-dimensions of 0 to 2 mm. There is described process for producing constructions of above mentioned concrete, for example, self-carried architectural formations, e.g., columns, bannisters, front-arches, pillars, stairs and suchlike. This process comprises mixing all components of concrete mass (binders, leaning additions and water), deposition of concrete in to forms, removing ready formations from forms and the following maintain of them. The mixture is filled in forms in layers and every slice has thickness from 35 to 40 mm. The layers are worked in using vibrator. Surface of preceded slice is loosen just before filling in form next slice. The reinforcement bars could be put in, if necessary, but ready formations are removed from forms and maintained watering those during 7 days and nights.
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