SU1564308A1 - Method of manufacturing ferroconcrete elements with prestressed bar reinforcement - Google Patents

Abstract

The invention relates to the production of building structures, in particular to the manufacture of reinforced concrete elements with pre-compressed rod reinforcement. The purpose of the invention is to reduce the metal and complexity of the elements. A layer of sulfuric solution heated to a temperature of 110-150 ° C is applied to the core reinforcement. After it is cooled below 80 ° C, the reinforcement is installed into the mold. After the concrete has gained strength, the reinforcement is heated, for example, by electric current until the sulfur solution is melted (about 120 ° C). Then, the reinforcement is sequentially compressed, cooled to the hardening temperature of the sulfur solution (below 70 ° C), and the stress of the compressed reinforcement is transferred to the concrete.

Description

This invention relates to a production unit. building structures, in particular for the manufacture of reinforced concrete elements with pre-compressed rod reinforcement.

The purpose of the invention is to reduce the material and labor intensity of the manufacture of elements.

The method is carried out as follows.

A layer of sulfuric solution heated to 110-150 ° C is applied to the core reinforcement in the form of a paste or by pouring into molds 3-4 mm thick (the components of the solution: sulfur, quartz flour, quartz sand are in a 1: 1 ratio : 2). When cooling the sulfur solution below 80 С

The rods are assembled into a skeleton by fixing them, for example, with transverse rods. Set the frame in the form with a gap of at least 5 cm and concreted. After the concrete gains strength, the layer of sulfuric solution is heated by electric current to 120-150 ° C, at which the sulfuric solution loses adhesion to the reinforcement. The reinforcement is then pre-compressed. Hardened concrete ensures the stability of rod reinforcement during the pre-compression process. After cooling the reinforcement and with it the sulfuric solution to a temperature below 70 ° C, the latter again acquires adhesion to the reinforcement and concrete.

SP

2

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00

31564308

The use of the method reduces the reinforcement after the concrete has been set, the strength of the metal and labor intensity of rigidity, the transmission of compressed voltage

the production of reinforced concrete elements on concrete, differs in precompressed rod u and in order to reduce

reinforcement. metal consumption and labor intensity izgo. item production, reinforcement coating

Claims (1)

Invention Formula v carried out with sulfuric solution, before The method of making reinforced concrete — by compressing the reinforcement — heats it to the dilated elements from the precompressed control of the sulfur solution, and the transfer reinforcement, which includes the voltage of the compressed reinforcement to neutralize the reinforcement with the solution, sets it up to form , concreting, compressing and hardening sulfur solution.