SU1315444A1 - Method for preparing concrete mix - Google Patents

Abstract

The invention relates to the building materials industry and can be used in the preparation of concrete mix. The goal is to increase strength. To prepare a concrete mix, it is planned to use activated mixing water, which is first magnetized before mixing with cement and aggregate, passes at a constant speed of 0.27-0.30 m / s in a magnetic processing unit in a constant magnetic field with induction of 100-101 mT then water is passed in the electrolyzer at a constant current and taken from the zone of the negative electrode pH 1.0-1G, 5. The activated water, dp, is mixed with cement and aggregate not later than 2-3 minutes from the moment of its activation, table 1. 1C (L cond 4 4

Description

113

The invention relates to the industrial fabrication of building materials and can be used in the preparation. concrete mixture,

The purpose of the invention is to increase the strength of concrete.

Example. The concrete mix is prepared from Portland cement M-AOO with a consumption of 280 kg / m and a water-cement (W / C) ratio of 0.64 according to the norms from local aggregates. The ground (cement) and aggregate (sand and crushed stone) are loaded into a concrete mixer with a volume of 330 l of the ready batch and the activated water is supplied not later than 2-3 minutes from the moment of its activation in the following quantities, l: Portlandcement-400-85

SandI87

Crushed stone295

The water is activated 60 with continuous mixing (90 s from the beginning of the loading of the bulk components) through the technological cycle.

Pre-gate water is activated at a constant speed.

Preparing concrete with water, passing through a magnetic field and subjected to electrolysis

one

Concrete preparation using water subjected to electrolysis without washing

Editor P1, Rogulich

Compiled by G. Rakcheeva

Tehred, JSC Kravchuk Proofreader S.Cherni

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VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

four . 2

movement of 0.27–0.30 m / s by magnetization of a magnetic processing unit in a constant magnetic field by induction of 100–101 mT; then water is passed into the electrolyzer at a constant current, selected from the zone of negative electric water pH 11, 0-11.5.

The test results are presented in the table,

The preparation of a concrete mix by the proposed method increases the mobility of the concrete mix and reduces water separation, increases the strength of concrete by 33–34%, and reduces the power consumption by 30–32%.

Claims (1)

Invention Formula A method for preparing a concrete mix, which includes mixing into a concrete, aggregate and mixing water subjected to electrolysis to a pH of 11-11.5, characterized in that, in order to increase the strength of concrete, water is passed before electrolysis at a speed of 0.27–0.30 m / s through a constant magnetic field with an induction of 100–101 mT.