Reconstruction of Structural Units and Buildings

Reconstruction of structural units and buildings is a comprehensive problem, as they usually consist of different materials, such as concrete, metal, wood, gypsum, ceramics, and so on. These materials are subject to various environmental factors that result in their breakdown. These factors and, therefore, the nature of failure differ depending on their location. In this connection, let us consider the possibilities of using polymer composites for restoration of ground-based, underground, and underwater structural units and buildings. 

We consider some examples of the use of Silor composition for the solution of particular problems of reconstruction of industrial and 

Repair of systems for potable water treatment Water treatment plants are built of reinforced concrete and processes employed in water ptuifi-cation cause breakdown of concrete. These processes include preparation of coagulant and its mixing with water, chlorination of water, and preventive bactericidal treatment of reservoirs. Leakage of water, especially at sites of wall and floor joints, is frequently observed. 

For repair, the concrete of reservoirs is impregnated with Silor composition to seal the concrete, strengthen it, and increase its chemical stability. Polyester cloth is glued at wall/floor joints using the one-component polyurethane adhesive UTK-M. 

Repair of drain siphons— pipes of 3 m diameter and 21 km length— has also been midertaken. The pipe was intended for water supply at 0.6MPa pressiue. 

Repair of systems tor potable water treatment. Water treatment plants are 

At the start of the drain siphon operation it was found that certain parts of the pipe were of poor quality and that its walls leaked. Leaking water washed away the foundations of the pipe, which had resulted in its deformation and the appearance of slots at sites of pipe joints. To eliminate defects the concrete of the pipe was sealed with Silor, and at pipe joints corrugated polyester tissue impregnated with UTK-M composition was pasted. This ensured air-tightness of the drain siphon despite variation of width of gaps between pipes. 

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