SU1390209A1

SU1390209A1 - Method of producing plasticizing additive for concrete mix

Info

Publication number: SU1390209A1
Application number: SU864023407A
Authority: SU
Inventors: Александр Григорьевич Коренюк; Анатолий Николаевич Бессараб; Юрий Алексеевич Несведов; Григорий Борисович Чижевский; Лилия Евгеньевна Фетисова; Олег Михайлович Соколов
Priority date: 1986-02-18
Filing date: 1986-02-18
Publication date: 1988-04-23

Abstract

Изобретение касаетс ст 1оитель- ных материалов и предназначено дл приготовлени пластифицирующей добавки дл бетонных смесей. Цель изобретени - ускорение приготовлени пластифицирующей добавки. В способе приготовлени пластифицирующей добавки дл бетонной смеси технические лиг- носульфонаты после нагрева до температуры 75-85 С одновременно смешивают с гидрооксидом натри и солью неорганической кислоты из группы , NaN03, NajCO, при их соотношении 1: :0,0625-0,0769:0,143-0,167 в течение 1-2 ч. Продолжительность технологического цикла приготовлени пласти-- фицирующей добавки 2-3 ч, 2 табл. 1C (ЛThe invention relates to stoneware materials and is intended for the preparation of a plasticizer for concrete mixtures. The purpose of the invention is to accelerate the preparation of the plasticizer. In the method of preparing a plasticizer additive for a concrete mixture, technical lignosulfonates after heating to a temperature of 75-85 ° C are simultaneously mixed with sodium hydroxide and an inorganic acid salt from the group NaN03, NajCO, at their ratio 1: 0.0625-0.0769 0.143-0.167 within 1-2 hours. The duration of the technological cycle of preparation of the plasticizing additive is 2-3 hours, table 2. 1C (L

Description

со соwith so

оabout

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О соAbout with

I Изобретение относитс к строителе: 1ШМ материалам, в частиосч и к способам приготовлени дл строи- тыльных растворов и бетонных смесей. Цель изобретени - ускорение при- гЬтовлени пластифицирующей добавки.I The invention relates to a builder: 1 cm materials, in part, to the preparation methods for building mortars and concrete mixtures. The purpose of the invention is to accelerate the preparation of a plasticizer.

: Примеры конкретного выполнени способа приведены в табл. 1.: Examples of a specific implementation of the method are given in Table. one.

i По предлагаемому способу 30-35%- водный раствор технических лигно- с льфонатов подогревают до 75-85°С и| ввод т гидрооксид натри и соль неорганической кислоты из группы ,C03, , NaNO, при перемеши- вЬши в течение 1-2 ч. Пластифициру- добавку ввод т в бетонную смесь сjводой затворени в количестве 0,2- от массы цемента.i According to the proposed method, 30-35% - an aqueous solution of technical ligno-lononates is heated to 75-85 ° C and | sodium hydroxide and an inorganic acid salt from the group, C03,, NaNO, are introduced with mixing for 1-2 hours. The plasticizing agent is introduced into the concrete mix with mixing water in an amount of 0.2% by weight of cement.

I Расход материалов на 1 м бетоп- смеси, кг:I Material consumption per 1 m of concrete mix, kg:

I Цемент430I Cement430

: Песок речной710: Sand river710

i Щебень фракгщиi Crushed gravel

10-20 мм1220 10-20 mm1220

Вода180 лWater 180 l

Физико-механические показатели бетонных образцов, приготовленных сPhysico-mechanical properties of concrete samples prepared with

Г 90209Г 90209

известной и предлагаемой добавками приведены в табл. 2.known and proposed additives are given in table. 2

10ten

Продолжительность технологическо го цикла по предлагаемому способу 2-3 ч, показатель трудоемкости приготовлени 20%, продолжительность технологического цикла по известному способу 7-8 ч.The duration of the technological cycle of the proposed method is 2-3 hours, the indicator of labor intensity of preparation is 20%, the duration of the technological cycle according to a known method is 7-8 hours.

Claims

Invention Formula

20

The method of preparing the plasticizer 15 for the concrete mix, which includes the mixing of technical lignosulfonates with the salt of an inorganic acid from the group., NaNO,, heating to 75-85 ° C, the introduction of sodium hydroxide, which is different from In order to accelerate the preparation of a plasticizer, technical lignosulfonates are first heated, then mixed simultaneously with sodium hydroxide and an inorganic acid salt at a ratio of 1: 0.0625- 0.0769: 0.143-0.167 for 1-2 hours.

25

The duration of the technological cycle of the proposed method is 2-3 hours, the indicator of the complexity of the preparation is 20%, the duration of the technological cycle by a known method is 7-8 hours.

Invention Formula

A method for preparing a plasticizing additive for a concrete mix, which consists of mixing technical lignosulfonates with an inorganic acid salt from the group., NaNO,, heating to 75-85 ° С, adding sodium hydroxide, which is different from In order to speed up the preparation of the plasticizer, first the technical lignosulfonates are heated, then mixed with sodium hydroxide and the salt of an inorganic acid at a ratio of 1: 0.0625- 0.0769: 0.143-0.167 for 1-2 hours.

Table 1

table 2