chemically prestressed concrete

chemically prestressed concrete: Силикатное производство: самонапряжённый железобетон

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concrete — concretely, adv. concreteness, n. concretive, adj. concretively, adv. /kon kreet, kong , kon kreet , kong / for 1 10, 11, 14, 15; /kon kreet , kong / for 12, 13, adj., n., v., concreted, concreting. adj. 1. constituting an actual thing or… … Universalium
Portland cement — is the most common type of cement in general usage in many parts of the world, as it is a basic ingredient of concrete, mortar, stucco and most non specialty grout. It is a fine powder produced by Portland cement clinker (more than 90%), a… … Wikipedia
steel — steellike, adj. /steel/, n. 1. any of various modified forms of iron, artificially produced, having a carbon content less than that of pig iron and more than that of wrought iron, and having qualities of hardness, elasticity, and strength varying … Universalium
lubrication — See lubricate. * * * Introduction of any of various substances between sliding surfaces to reduce wear and friction. Lubricants may secondarily control corrosion, regulate temperature, electrically insulate, remove contaminants, or damp shock.… … Universalium
building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… … Universalium

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